From wenst at chromium.org  Wed Apr  8 01:11:49 2026
From: wenst at chromium.org (Chen-Yu Tsai)
Date: Wed,  8 Apr 2026 16:11:49 +0800
Subject: [PATCH] firmware: raspberrypi: Change dependency to ARCH_BCM2835 and COMPILE_TEST
Message-ID: <20260408081150.1710717-1-wenst@chromium.org>

The Raspberry Pi firmware driver has no compile dependencies on the
BCM2835 mailbox driver. It's just a indirect runtime dependency: the
driver only works on a Raspberry Pi.

Change the dependency from BCM2835_MBOX to ARCH_BCM2835. Also allow
compile tests. This allows drivers that have build time dependencies
on this firmware driver to be compile tested as well.

Signed-off-by: Chen-Yu Tsai <wenst at chromium.org>
---
 drivers/firmware/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
index bbd2155d8483..f99d27c1f6a4 100644
--- a/drivers/firmware/Kconfig
+++ b/drivers/firmware/Kconfig
@@ -114,7 +114,7 @@ config ISCSI_IBFT
 
 config RASPBERRYPI_FIRMWARE
 	tristate "Raspberry Pi Firmware Driver"
-	depends on BCM2835_MBOX
+	depends on ARCH_BCM2835 || COMPILE_TEST
 	help
 	  This option enables support for communicating with the firmware on the
 	  Raspberry Pi.
-- 
2.53.0.1213.gd9a14994de-goog



From florian.fainelli at broadcom.com  Fri Apr 10 10:15:41 2026
From: florian.fainelli at broadcom.com (Florian Fainelli)
Date: Fri, 10 Apr 2026 10:15:41 -0700
Subject: [PATCH] firmware: raspberrypi: Change dependency to ARCH_BCM2835
 and COMPILE_TEST
In-Reply-To: <20260408081150.1710717-1-wenst@chromium.org>
References: <20260408081150.1710717-1-wenst@chromium.org>
Message-ID: <d07def49-d18d-4248-bd97-908856d2359e@broadcom.com>

On 4/8/26 01:11, Chen-Yu Tsai wrote:
> The Raspberry Pi firmware driver has no compile dependencies on the
> BCM2835 mailbox driver. It's just a indirect runtime dependency: the
> driver only works on a Raspberry Pi.
> 
> Change the dependency from BCM2835_MBOX to ARCH_BCM2835. Also allow
> compile tests. This allows drivers that have build time dependencies
> on this firmware driver to be compile tested as well.
> 
> Signed-off-by: Chen-Yu Tsai <wenst at chromium.org>

No objection, however I think this should also have:

	default ARCH_BRCM2835

because without the firmware driver there is effectively nothing that 
works. See this patch series:

https://lists.infradead.org/pipermail/linux-arm-kernel/2024-May/927679.html

> ---
>   drivers/firmware/Kconfig | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
> index bbd2155d8483..f99d27c1f6a4 100644
> --- a/drivers/firmware/Kconfig
> +++ b/drivers/firmware/Kconfig
> @@ -114,7 +114,7 @@ config ISCSI_IBFT
>   
>   config RASPBERRYPI_FIRMWARE
>   	tristate "Raspberry Pi Firmware Driver"
> -	depends on BCM2835_MBOX
> +	depends on ARCH_BCM2835 || COMPILE_TEST
>   	help
>   	  This option enables support for communicating with the firmware on the
>   	  Raspberry Pi.


-- 
Florian


From lkp at intel.com  Mon Apr 13 01:29:24 2026
From: lkp at intel.com (kernel test robot)
Date: Mon, 13 Apr 2026 16:29:24 +0800
Subject: [PATCH] firmware: raspberrypi: Change dependency to ARCH_BCM2835
 and COMPILE_TEST
In-Reply-To: <20260408081150.1710717-1-wenst@chromium.org>
References: <20260408081150.1710717-1-wenst@chromium.org>
Message-ID: <202604130409.fOhpgXN6-lkp@intel.com>

Hi Chen-Yu,

kernel test robot noticed the following build errors:

[auto build test ERROR on soc/for-next]
[also build test ERROR on linus/master v7.0-rc7 next-20260410]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Chen-Yu-Tsai/firmware-raspberrypi-Change-dependency-to-ARCH_BCM2835-and-COMPILE_TEST/20260412-210604
base:   https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git for-next
patch link:    https://lore.kernel.org/r/20260408081150.1710717-1-wenst%40chromium.org
patch subject: [PATCH] firmware: raspberrypi: Change dependency to ARCH_BCM2835 and COMPILE_TEST
config: hexagon-allmodconfig (https://download.01.org/0day-ci/archive/20260413/202604130409.fOhpgXN6-lkp at intel.com/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260413/202604130409.fOhpgXN6-lkp at intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202604130409.fOhpgXN6-lkp at intel.com/

All errors (new ones prefixed by >>):

>> drivers/platform/raspberrypi/vchiq-interface/vchiq_core.c:531:3: error: call to undeclared function 'dsb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     531 |                 dsb(sy);
         |                 ^
>> drivers/platform/raspberrypi/vchiq-interface/vchiq_core.c:531:7: error: use of undeclared identifier 'sy'
     531 |                 dsb(sy);
         |                     ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_core.c:559:2: error: call to undeclared function 'dsb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     559 |         dsb(sy);         /* data barrier operation */
         |         ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_core.c:559:6: error: use of undeclared identifier 'sy'
     559 |         dsb(sy);         /* data barrier operation */
         |             ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_core.c:1944:2: error: call to undeclared function 'dsb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
    1944 |         DEBUG_VALUE(PARSE_HEADER, (int)(long)header);
         |         ^
   include/linux/raspberrypi/vchiq_core.h:71:37: note: expanded from macro 'DEBUG_VALUE'
      71 |         do { debug_ptr[DEBUG_ ## d] = (v); dsb(sy); } while (0)
         |                                            ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_core.c:1944:2: error: use of undeclared identifier 'sy'
   include/linux/raspberrypi/vchiq_core.h:71:41: note: expanded from macro 'DEBUG_VALUE'
      71 |         do { debug_ptr[DEBUG_ ## d] = (v); dsb(sy); } while (0)
         |                                                ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_core.c:1946:2: error: call to undeclared function 'dsb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
    1946 |         DEBUG_VALUE(PARSE_MSGID, msgid);
         |         ^
   include/linux/raspberrypi/vchiq_core.h:71:37: note: expanded from macro 'DEBUG_VALUE'
      71 |         do { debug_ptr[DEBUG_ ## d] = (v); dsb(sy); } while (0)
         |                                            ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_core.c:1946:2: error: use of undeclared identifier 'sy'
   include/linux/raspberrypi/vchiq_core.h:71:41: note: expanded from macro 'DEBUG_VALUE'
      71 |         do { debug_ptr[DEBUG_ ## d] = (v); dsb(sy); } while (0)
         |                                                ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_core.c:2059:4: error: call to undeclared function 'dsb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
    2059 |                         DEBUG_TRACE(PARSE_LINE);
         |                         ^
   include/linux/raspberrypi/vchiq_core.h:69:42: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                 ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_core.c:2059:4: error: use of undeclared identifier 'sy'
   include/linux/raspberrypi/vchiq_core.h:69:46: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                     ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_core.c:2062:5: error: call to undeclared function 'dsb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
    2062 |                                 DEBUG_TRACE(PARSE_LINE);
         |                                 ^
   include/linux/raspberrypi/vchiq_core.h:69:42: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                 ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_core.c:2062:5: error: use of undeclared identifier 'sy'
   include/linux/raspberrypi/vchiq_core.h:69:46: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                     ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_core.c:2097:4: error: call to undeclared function 'dsb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
    2097 |                         DEBUG_TRACE(PARSE_LINE);
         |                         ^
   include/linux/raspberrypi/vchiq_core.h:69:42: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                 ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_core.c:2097:4: error: use of undeclared identifier 'sy'
   include/linux/raspberrypi/vchiq_core.h:69:46: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                     ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_core.c:2099:5: error: call to undeclared function 'dsb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
    2099 |                                 DEBUG_TRACE(PARSE_LINE);
         |                                 ^
   include/linux/raspberrypi/vchiq_core.h:69:42: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                 ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_core.c:2099:5: error: use of undeclared identifier 'sy'
   include/linux/raspberrypi/vchiq_core.h:69:46: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                     ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_core.c:2132:4: error: call to undeclared function 'dsb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
    2132 |                         DEBUG_TRACE(PARSE_LINE);
         |                         ^
   include/linux/raspberrypi/vchiq_core.h:69:42: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                 ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_core.c:2132:4: error: use of undeclared identifier 'sy'
   include/linux/raspberrypi/vchiq_core.h:69:46: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                     ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_core.c:2137:4: error: call to undeclared function 'dsb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
    2137 |                         DEBUG_TRACE(PARSE_LINE);
         |                         ^
   include/linux/raspberrypi/vchiq_core.h:69:42: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                 ^
   fatal error: too many errors emitted, stopping now [-ferror-limit=]
   20 errors generated.
--
>> drivers/platform/raspberrypi/vchiq-interface/vchiq_arm.c:665:3: error: call to undeclared function 'dsb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     665 |                 DEBUG_TRACE(SERVICE_CALLBACK_LINE);
         |                 ^
   include/linux/raspberrypi/vchiq_core.h:69:42: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                 ^
>> drivers/platform/raspberrypi/vchiq-interface/vchiq_arm.c:665:3: error: use of undeclared identifier 'sy'
   include/linux/raspberrypi/vchiq_core.h:69:46: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                     ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_arm.c:667:3: error: call to undeclared function 'dsb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     667 |                 DEBUG_COUNT(COMPLETION_QUEUE_FULL_COUNT);
         |                 ^
   include/linux/raspberrypi/vchiq_core.h:73:33: note: expanded from macro 'DEBUG_COUNT'
      73 |         do { debug_ptr[DEBUG_ ## d]++; dsb(sy); } while (0)
         |                                        ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_arm.c:667:3: error: use of undeclared identifier 'sy'
   include/linux/raspberrypi/vchiq_core.h:73:37: note: expanded from macro 'DEBUG_COUNT'
      73 |         do { debug_ptr[DEBUG_ ## d]++; dsb(sy); } while (0)
         |                                            ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_arm.c:675:3: error: call to undeclared function 'dsb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     675 |                 DEBUG_TRACE(SERVICE_CALLBACK_LINE);
         |                 ^
   include/linux/raspberrypi/vchiq_core.h:69:42: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                 ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_arm.c:675:3: error: use of undeclared identifier 'sy'
   include/linux/raspberrypi/vchiq_core.h:69:46: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                     ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_arm.c:769:2: error: call to undeclared function 'dsb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     769 |         DEBUG_TRACE(SERVICE_CALLBACK_LINE);
         |         ^
   include/linux/raspberrypi/vchiq_core.h:69:42: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                 ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_arm.c:769:2: error: use of undeclared identifier 'sy'
   include/linux/raspberrypi/vchiq_core.h:69:46: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                     ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_arm.c:804:4: error: call to undeclared function 'dsb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     804 |                         DEBUG_TRACE(SERVICE_CALLBACK_LINE);
         |                         ^
   include/linux/raspberrypi/vchiq_core.h:69:42: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                 ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_arm.c:804:4: error: use of undeclared identifier 'sy'
   include/linux/raspberrypi/vchiq_core.h:69:46: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                     ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_arm.c:805:4: error: call to undeclared function 'dsb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     805 |                         DEBUG_COUNT(MSG_QUEUE_FULL_COUNT);
         |                         ^
   include/linux/raspberrypi/vchiq_core.h:73:33: note: expanded from macro 'DEBUG_COUNT'
      73 |         do { debug_ptr[DEBUG_ ## d]++; dsb(sy); } while (0)
         |                                        ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_arm.c:805:4: error: use of undeclared identifier 'sy'
   include/linux/raspberrypi/vchiq_core.h:73:37: note: expanded from macro 'DEBUG_COUNT'
      73 |         do { debug_ptr[DEBUG_ ## d]++; dsb(sy); } while (0)
         |                                            ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_arm.c:810:5: error: call to undeclared function 'dsb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     810 |                                 DEBUG_TRACE(SERVICE_CALLBACK_LINE);
         |                                 ^
   include/linux/raspberrypi/vchiq_core.h:69:42: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                 ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_arm.c:810:5: error: use of undeclared identifier 'sy'
   include/linux/raspberrypi/vchiq_core.h:69:46: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                     ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_arm.c:814:4: error: call to undeclared function 'dsb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     814 |                         DEBUG_TRACE(SERVICE_CALLBACK_LINE);
         |                         ^
   include/linux/raspberrypi/vchiq_core.h:69:42: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                 ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_arm.c:814:4: error: use of undeclared identifier 'sy'
   include/linux/raspberrypi/vchiq_core.h:69:46: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                     ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_arm.c:839:2: error: call to undeclared function 'dsb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     839 |         DEBUG_TRACE(SERVICE_CALLBACK_LINE);
         |         ^
   include/linux/raspberrypi/vchiq_core.h:69:42: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                 ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_arm.c:839:2: error: use of undeclared identifier 'sy'
   include/linux/raspberrypi/vchiq_core.h:69:46: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                     ^
   18 errors generated.
--
>> drivers/platform/raspberrypi/vchiq-interface/vchiq_dev.c:213:2: error: call to undeclared function 'dsb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     213 |         DEBUG_TRACE(DEQUEUE_MESSAGE_LINE);
         |         ^
   include/linux/raspberrypi/vchiq_core.h:69:42: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                 ^
>> drivers/platform/raspberrypi/vchiq-interface/vchiq_dev.c:213:2: error: use of undeclared identifier 'sy'
   include/linux/raspberrypi/vchiq_core.h:69:46: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                     ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_dev.c:228:4: error: call to undeclared function 'dsb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     228 |                         DEBUG_TRACE(DEQUEUE_MESSAGE_LINE);
         |                         ^
   include/linux/raspberrypi/vchiq_core.h:69:42: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                 ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_dev.c:228:4: error: use of undeclared identifier 'sy'
   include/linux/raspberrypi/vchiq_core.h:69:46: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                     ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_dev.c:236:4: error: call to undeclared function 'dsb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     236 |                         DEBUG_TRACE(DEQUEUE_MESSAGE_LINE);
         |                         ^
   include/linux/raspberrypi/vchiq_core.h:69:42: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                 ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_dev.c:236:4: error: use of undeclared identifier 'sy'
   include/linux/raspberrypi/vchiq_core.h:69:46: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                     ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_dev.c:279:2: error: call to undeclared function 'dsb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     279 |         DEBUG_TRACE(DEQUEUE_MESSAGE_LINE);
         |         ^
   include/linux/raspberrypi/vchiq_core.h:69:42: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                 ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_dev.c:279:2: error: use of undeclared identifier 'sy'
   include/linux/raspberrypi/vchiq_core.h:69:46: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                     ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_dev.c:454:2: error: call to undeclared function 'dsb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     454 |         DEBUG_TRACE(AWAIT_COMPLETION_LINE);
         |         ^
   include/linux/raspberrypi/vchiq_core.h:69:42: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                 ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_dev.c:454:2: error: use of undeclared identifier 'sy'
   include/linux/raspberrypi/vchiq_core.h:69:46: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                     ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_dev.c:460:2: error: call to undeclared function 'dsb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     460 |         DEBUG_TRACE(AWAIT_COMPLETION_LINE);
         |         ^
   include/linux/raspberrypi/vchiq_core.h:69:42: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                 ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_dev.c:460:2: error: use of undeclared identifier 'sy'
   include/linux/raspberrypi/vchiq_core.h:69:46: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                     ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_dev.c:464:3: error: call to undeclared function 'dsb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     464 |                 DEBUG_TRACE(AWAIT_COMPLETION_LINE);
         |                 ^
   include/linux/raspberrypi/vchiq_core.h:69:42: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                 ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_dev.c:464:3: error: use of undeclared identifier 'sy'
   include/linux/raspberrypi/vchiq_core.h:69:46: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                     ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_dev.c:469:4: error: call to undeclared function 'dsb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     469 |                         DEBUG_TRACE(AWAIT_COMPLETION_LINE);
         |                         ^
   include/linux/raspberrypi/vchiq_core.h:69:42: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                 ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_dev.c:469:4: error: use of undeclared identifier 'sy'
   include/linux/raspberrypi/vchiq_core.h:69:46: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                     ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_dev.c:475:2: error: call to undeclared function 'dsb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     475 |         DEBUG_TRACE(AWAIT_COMPLETION_LINE);
         |         ^
   include/linux/raspberrypi/vchiq_core.h:69:42: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                 ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_dev.c:475:2: error: use of undeclared identifier 'sy'
   include/linux/raspberrypi/vchiq_core.h:69:46: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                     ^
   drivers/platform/raspberrypi/vchiq-interface/vchiq_dev.c:578:2: error: call to undeclared function 'dsb'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     578 |         DEBUG_TRACE(AWAIT_COMPLETION_LINE);
         |         ^
   include/linux/raspberrypi/vchiq_core.h:69:42: note: expanded from macro 'DEBUG_TRACE'
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                 ^
   fatal error: too many errors emitted, stopping now [-ferror-limit=]
   20 errors generated.


vim +/dsb +531 drivers/platform/raspberrypi/vchiq-interface/vchiq_core.c

71bad7f086419d drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c popcornmix             2013-07-02  513  
77cf3f5dcf35c8 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Nicolas Saenz Julienne 2019-05-09  514  /*
77cf3f5dcf35c8 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Nicolas Saenz Julienne 2019-05-09  515   * All the event waiting routines in VCHIQ used a custom semaphore
77cf3f5dcf35c8 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Nicolas Saenz Julienne 2019-05-09  516   * implementation that filtered most signals. This achieved a behaviour similar
77cf3f5dcf35c8 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Nicolas Saenz Julienne 2019-05-09  517   * to the "killable" family of functions. While cleaning up this code all the
77cf3f5dcf35c8 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Nicolas Saenz Julienne 2019-05-09  518   * routines where switched to the "interruptible" family of functions, as the
77cf3f5dcf35c8 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Nicolas Saenz Julienne 2019-05-09  519   * former was deemed unjustified and the use "killable" set all VCHIQ's
77cf3f5dcf35c8 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Nicolas Saenz Julienne 2019-05-09  520   * threads in D state.
c22502cb84d4c9 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Umang Jain             2024-07-03  521   *
c22502cb84d4c9 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Umang Jain             2024-07-03  522   * Returns: 0 on success, a negative error code on failure
77cf3f5dcf35c8 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Nicolas Saenz Julienne 2019-05-09  523   */
71bad7f086419d drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c popcornmix             2013-07-02  524  static inline int
4075fa9efc4ee6 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Dominic Braun          2018-12-14  525  remote_event_wait(wait_queue_head_t *wq, struct remote_event *event)
71bad7f086419d drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c popcornmix             2013-07-02  526  {
c22502cb84d4c9 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Umang Jain             2024-07-03  527  	int ret = 0;
c22502cb84d4c9 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Umang Jain             2024-07-03  528  
71bad7f086419d drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c popcornmix             2013-07-02  529  	if (!event->fired) {
71bad7f086419d drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c popcornmix             2013-07-02  530  		event->armed = 1;
35b7ebda57affc drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Michael Zoran          2016-10-19 @531  		dsb(sy);
c22502cb84d4c9 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Umang Jain             2024-07-03  532  		ret = wait_event_interruptible(*wq, event->fired);
c22502cb84d4c9 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Umang Jain             2024-07-03  533  		if (ret) {
71bad7f086419d drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c popcornmix             2013-07-02  534  			event->armed = 0;
c22502cb84d4c9 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Umang Jain             2024-07-03  535  			return ret;
71bad7f086419d drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c popcornmix             2013-07-02  536  		}
71bad7f086419d drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c popcornmix             2013-07-02  537  		event->armed = 0;
f6c99d86246ad4 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Phil Elwell            2022-06-24  538  		/* Ensure that the peer sees that we are not waiting (armed == 0). */
71bad7f086419d drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c popcornmix             2013-07-02  539  		wmb();
71bad7f086419d drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c popcornmix             2013-07-02  540  	}
71bad7f086419d drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c popcornmix             2013-07-02  541  
71bad7f086419d drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c popcornmix             2013-07-02  542  	event->fired = 0;
c22502cb84d4c9 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Umang Jain             2024-07-03  543  	return ret;
71bad7f086419d drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c popcornmix             2013-07-02  544  }
71bad7f086419d drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c popcornmix             2013-07-02  545  

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki


From lkp at intel.com  Mon Apr 13 01:29:26 2026
From: lkp at intel.com (kernel test robot)
Date: Mon, 13 Apr 2026 16:29:26 +0800
Subject: [PATCH] firmware: raspberrypi: Change dependency to ARCH_BCM2835
 and COMPILE_TEST
In-Reply-To: <20260408081150.1710717-1-wenst@chromium.org>
References: <20260408081150.1710717-1-wenst@chromium.org>
Message-ID: <202604130727.sB8gZrr6-lkp@intel.com>

Hi Chen-Yu,

kernel test robot noticed the following build errors:

[auto build test ERROR on soc/for-next]
[also build test ERROR on linus/master v7.0-rc7 next-20260410]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Chen-Yu-Tsai/firmware-raspberrypi-Change-dependency-to-ARCH_BCM2835-and-COMPILE_TEST/20260412-210604
base:   https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git for-next
patch link:    https://lore.kernel.org/r/20260408081150.1710717-1-wenst%40chromium.org
patch subject: [PATCH] firmware: raspberrypi: Change dependency to ARCH_BCM2835 and COMPILE_TEST
config: alpha-allyesconfig (https://download.01.org/0day-ci/archive/20260413/202604130727.sB8gZrr6-lkp at intel.com/config)
compiler: alpha-linux-gcc (GCC) 15.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260413/202604130727.sB8gZrr6-lkp at intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202604130727.sB8gZrr6-lkp at intel.com/

All errors (new ones prefixed by >>):

   drivers/platform/raspberrypi/vchiq-interface/vchiq_core.c: In function 'remote_event_wait':
>> drivers/platform/raspberrypi/vchiq-interface/vchiq_core.c:531:17: error: implicit declaration of function 'dsb' [-Wimplicit-function-declaration]
     531 |                 dsb(sy);
         |                 ^~~
>> drivers/platform/raspberrypi/vchiq-interface/vchiq_core.c:531:21: error: 'sy' undeclared (first use in this function); did you mean 's8'?
     531 |                 dsb(sy);
         |                     ^~
         |                     s8
   drivers/platform/raspberrypi/vchiq-interface/vchiq_core.c:531:21: note: each undeclared identifier is reported only once for each function it appears in
   drivers/platform/raspberrypi/vchiq-interface/vchiq_core.c: In function 'remote_event_signal':
   drivers/platform/raspberrypi/vchiq-interface/vchiq_core.c:559:13: error: 'sy' undeclared (first use in this function); did you mean 's8'?
     559 |         dsb(sy);         /* data barrier operation */
         |             ^~
         |             s8
   In file included from include/linux/raspberrypi/vchiq_arm.h:14,
                    from drivers/platform/raspberrypi/vchiq-interface/vchiq_core.c:18:
   drivers/platform/raspberrypi/vchiq-interface/vchiq_core.c: In function 'parse_message':
>> include/linux/raspberrypi/vchiq_core.h:71:48: error: 'sy' undeclared (first use in this function); did you mean 's8'?
      71 |         do { debug_ptr[DEBUG_ ## d] = (v); dsb(sy); } while (0)
         |                                                ^~
   drivers/platform/raspberrypi/vchiq-interface/vchiq_core.c:1944:9: note: in expansion of macro 'DEBUG_VALUE'
    1944 |         DEBUG_VALUE(PARSE_HEADER, (int)(long)header);
         |         ^~~~~~~~~~~
   drivers/platform/raspberrypi/vchiq-interface/vchiq_core.c: In function 'parse_rx_slots':
   include/linux/raspberrypi/vchiq_core.h:69:53: error: 'sy' undeclared (first use in this function); did you mean 's8'?
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                     ^~
   drivers/platform/raspberrypi/vchiq-interface/vchiq_core.c:2213:17: note: in expansion of macro 'DEBUG_TRACE'
    2213 |                 DEBUG_TRACE(PARSE_LINE);
         |                 ^~~~~~~~~~~
   drivers/platform/raspberrypi/vchiq-interface/vchiq_core.c: In function 'slot_handler_func':
   include/linux/raspberrypi/vchiq_core.h:73:44: error: 'sy' undeclared (first use in this function); did you mean 's8'?
      73 |         do { debug_ptr[DEBUG_ ## d]++; dsb(sy); } while (0)
         |                                            ^~
   drivers/platform/raspberrypi/vchiq-interface/vchiq_core.c:2314:17: note: in expansion of macro 'DEBUG_COUNT'
    2314 |                 DEBUG_COUNT(SLOT_HANDLER_COUNT);
         |                 ^~~~~~~~~~~
--
   In file included from drivers/platform/raspberrypi/vchiq-interface/vchiq_arm.c:33:
   drivers/platform/raspberrypi/vchiq-interface/vchiq_arm.c: In function 'add_completion':
>> include/linux/raspberrypi/vchiq_core.h:69:49: error: implicit declaration of function 'dsb' [-Wimplicit-function-declaration]
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                 ^~~
   drivers/platform/raspberrypi/vchiq-interface/vchiq_arm.c:665:17: note: in expansion of macro 'DEBUG_TRACE'
     665 |                 DEBUG_TRACE(SERVICE_CALLBACK_LINE);
         |                 ^~~~~~~~~~~
   include/linux/raspberrypi/vchiq_core.h:69:53: error: 'sy' undeclared (first use in this function); did you mean 's8'?
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                     ^~
   drivers/platform/raspberrypi/vchiq-interface/vchiq_arm.c:665:17: note: in expansion of macro 'DEBUG_TRACE'
     665 |                 DEBUG_TRACE(SERVICE_CALLBACK_LINE);
         |                 ^~~~~~~~~~~
   include/linux/raspberrypi/vchiq_core.h:69:53: note: each undeclared identifier is reported only once for each function it appears in
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                     ^~
   drivers/platform/raspberrypi/vchiq-interface/vchiq_arm.c:665:17: note: in expansion of macro 'DEBUG_TRACE'
     665 |                 DEBUG_TRACE(SERVICE_CALLBACK_LINE);
         |                 ^~~~~~~~~~~
   drivers/platform/raspberrypi/vchiq-interface/vchiq_arm.c: In function 'service_callback':
   include/linux/raspberrypi/vchiq_core.h:69:53: error: 'sy' undeclared (first use in this function); did you mean 's8'?
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                     ^~
   drivers/platform/raspberrypi/vchiq-interface/vchiq_arm.c:769:9: note: in expansion of macro 'DEBUG_TRACE'
     769 |         DEBUG_TRACE(SERVICE_CALLBACK_LINE);
         |         ^~~~~~~~~~~
--
   In file included from drivers/platform/raspberrypi/vchiq-interface/vchiq_dev.c:14:
   drivers/platform/raspberrypi/vchiq-interface/vchiq_dev.c: In function 'vchiq_ioc_dequeue_message':
>> include/linux/raspberrypi/vchiq_core.h:69:49: error: implicit declaration of function 'dsb' [-Wimplicit-function-declaration]
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                 ^~~
   drivers/platform/raspberrypi/vchiq-interface/vchiq_dev.c:213:9: note: in expansion of macro 'DEBUG_TRACE'
     213 |         DEBUG_TRACE(DEQUEUE_MESSAGE_LINE);
         |         ^~~~~~~~~~~
   include/linux/raspberrypi/vchiq_core.h:69:53: error: 'sy' undeclared (first use in this function); did you mean 's8'?
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                     ^~
   drivers/platform/raspberrypi/vchiq-interface/vchiq_dev.c:213:9: note: in expansion of macro 'DEBUG_TRACE'
     213 |         DEBUG_TRACE(DEQUEUE_MESSAGE_LINE);
         |         ^~~~~~~~~~~
   include/linux/raspberrypi/vchiq_core.h:69:53: note: each undeclared identifier is reported only once for each function it appears in
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                     ^~
   drivers/platform/raspberrypi/vchiq-interface/vchiq_dev.c:213:9: note: in expansion of macro 'DEBUG_TRACE'
     213 |         DEBUG_TRACE(DEQUEUE_MESSAGE_LINE);
         |         ^~~~~~~~~~~
   drivers/platform/raspberrypi/vchiq-interface/vchiq_dev.c: In function 'vchiq_ioc_await_completion':
   include/linux/raspberrypi/vchiq_core.h:69:53: error: 'sy' undeclared (first use in this function); did you mean 's8'?
      69 |         do { debug_ptr[DEBUG_ ## d] = __LINE__; dsb(sy); } while (0)
         |                                                     ^~
   drivers/platform/raspberrypi/vchiq-interface/vchiq_dev.c:454:9: note: in expansion of macro 'DEBUG_TRACE'
     454 |         DEBUG_TRACE(AWAIT_COMPLETION_LINE);
         |         ^~~~~~~~~~~


vim +/dsb +531 drivers/platform/raspberrypi/vchiq-interface/vchiq_core.c

71bad7f086419d drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c popcornmix             2013-07-02  513  
77cf3f5dcf35c8 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Nicolas Saenz Julienne 2019-05-09  514  /*
77cf3f5dcf35c8 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Nicolas Saenz Julienne 2019-05-09  515   * All the event waiting routines in VCHIQ used a custom semaphore
77cf3f5dcf35c8 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Nicolas Saenz Julienne 2019-05-09  516   * implementation that filtered most signals. This achieved a behaviour similar
77cf3f5dcf35c8 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Nicolas Saenz Julienne 2019-05-09  517   * to the "killable" family of functions. While cleaning up this code all the
77cf3f5dcf35c8 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Nicolas Saenz Julienne 2019-05-09  518   * routines where switched to the "interruptible" family of functions, as the
77cf3f5dcf35c8 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Nicolas Saenz Julienne 2019-05-09  519   * former was deemed unjustified and the use "killable" set all VCHIQ's
77cf3f5dcf35c8 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Nicolas Saenz Julienne 2019-05-09  520   * threads in D state.
c22502cb84d4c9 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Umang Jain             2024-07-03  521   *
c22502cb84d4c9 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Umang Jain             2024-07-03  522   * Returns: 0 on success, a negative error code on failure
77cf3f5dcf35c8 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Nicolas Saenz Julienne 2019-05-09  523   */
71bad7f086419d drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c popcornmix             2013-07-02  524  static inline int
4075fa9efc4ee6 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Dominic Braun          2018-12-14  525  remote_event_wait(wait_queue_head_t *wq, struct remote_event *event)
71bad7f086419d drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c popcornmix             2013-07-02  526  {
c22502cb84d4c9 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Umang Jain             2024-07-03  527  	int ret = 0;
c22502cb84d4c9 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Umang Jain             2024-07-03  528  
71bad7f086419d drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c popcornmix             2013-07-02  529  	if (!event->fired) {
71bad7f086419d drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c popcornmix             2013-07-02  530  		event->armed = 1;
35b7ebda57affc drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Michael Zoran          2016-10-19 @531  		dsb(sy);
c22502cb84d4c9 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Umang Jain             2024-07-03  532  		ret = wait_event_interruptible(*wq, event->fired);
c22502cb84d4c9 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Umang Jain             2024-07-03  533  		if (ret) {
71bad7f086419d drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c popcornmix             2013-07-02  534  			event->armed = 0;
c22502cb84d4c9 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Umang Jain             2024-07-03  535  			return ret;
71bad7f086419d drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c popcornmix             2013-07-02  536  		}
71bad7f086419d drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c popcornmix             2013-07-02  537  		event->armed = 0;
f6c99d86246ad4 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Phil Elwell            2022-06-24  538  		/* Ensure that the peer sees that we are not waiting (armed == 0). */
71bad7f086419d drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c popcornmix             2013-07-02  539  		wmb();
71bad7f086419d drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c popcornmix             2013-07-02  540  	}
71bad7f086419d drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c popcornmix             2013-07-02  541  
71bad7f086419d drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c popcornmix             2013-07-02  542  	event->fired = 0;
c22502cb84d4c9 drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c Umang Jain             2024-07-03  543  	return ret;
71bad7f086419d drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c popcornmix             2013-07-02  544  }
71bad7f086419d drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c popcornmix             2013-07-02  545  

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki


From wenst at chromium.org  Mon Apr 27 02:10:57 2026
From: wenst at chromium.org (Chen-Yu Tsai)
Date: Mon, 27 Apr 2026 17:10:57 +0800
Subject: [PATCH v2] firmware: raspberrypi: Change dependency to ARCH_BCM2835 and COMPILE_TEST
Message-ID: <20260427091058.2669812-1-wenst@chromium.org>

The Raspberry Pi firmware driver has no compile dependencies on the
BCM2835 mailbox driver. It's just a indirect runtime dependency: the
driver only works on a Raspberry Pi.

Change the dependency from BCM2835_MBOX to ARCH_BCM2835. Also allow
compile tests. This allows drivers that have build time dependencies
on this firmware driver to be compile tested as well. More dependencies
are added to account for build time dependencies:

  - depends on MAILBOX for mailbox API (not stubbed) usage
  - depends on ARM || ARM64 for dsb() usage

Also make it built by default if ARCH_BCM2835, since many functions will
not work without this firmware driver.

Signed-off-by: Chen-Yu Tsai <wenst at chromium.org>
---
Changes since v1:
- Added depends on MAILBOX for API usage (pointed out by Sashiko)
- Added depends on ARM || ARM64 for dsb() usage
  (build failure report from kernel test robot)
- Added default ARCH_BCM2835 as Florian suggested
---
 drivers/firmware/Kconfig | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
index bbd2155d8483..bcfda01c2ab8 100644
--- a/drivers/firmware/Kconfig
+++ b/drivers/firmware/Kconfig
@@ -114,7 +114,10 @@ config ISCSI_IBFT
 
 config RASPBERRYPI_FIRMWARE
 	tristate "Raspberry Pi Firmware Driver"
-	depends on BCM2835_MBOX
+	depends on ARCH_BCM2835 || COMPILE_TEST
+	depends on ARM || ARM64
+	depends on MAILBOX
+	default ARCH_BCM2835
 	help
 	  This option enables support for communicating with the firmware on the
 	  Raspberry Pi.
-- 
2.54.0.rc2.544.gc7ae2d5bb8-goog