[PATCH v4 1/3] resource: Use list_head to link sibling resource

[Baoquan He]

On 05/07/18 at 11:50pm, kbuild test robot wrote:
> Hi Baoquan,
> 
> I love your patch! Yet something to improve:
> 
> [auto build test ERROR on linus/master]
> [also build test ERROR on v4.17-rc4 next-20180504]
> [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
> 
> url:    https://github.com/0day-ci/linux/commits/Baoquan-He/resource-Use-list_head-to-link-sibling-resource/20180507-144345
> config: arm-allmodconfig (attached as .config)
> compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0
> reproduce:
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # save the attached .config to linux build tree
>         make.cross ARCH=arm 
> 
> All errors (new ones prefixed by >>):

Thanks, below patch can fix it:


diff --git a/arch/arm/plat-samsung/pm-check.c b/arch/arm/plat-samsung/pm-check.c
index cd2c02c68bc3..5494355b1c49 100644
--- a/arch/arm/plat-samsung/pm-check.c
+++ b/arch/arm/plat-samsung/pm-check.c
@@ -46,8 +46,8 @@ typedef u32 *(run_fn_t)(struct resource *ptr, u32 *arg);
 static void s3c_pm_run_res(struct resource *ptr, run_fn_t fn, u32 *arg)
 {
 	while (ptr != NULL) {
-		if (ptr->child != NULL)
-			s3c_pm_run_res(ptr->child, fn, arg);
+		if (!list_empty(&ptr->child))
+			s3c_pm_run_res(resource_first_child(&ptr->child), fn, arg);
 
 		if ((ptr->flags & IORESOURCE_SYSTEM_RAM)
 				== IORESOURCE_SYSTEM_RAM) {
@@ -57,7 +57,7 @@ static void s3c_pm_run_res(struct resource *ptr, run_fn_t fn, u32 *arg)
 			arg = (fn)(ptr, arg);
 		}
 
-		ptr = ptr->sibling;
+		ptr = resource_sibling(ptr);
 	}
 }
 

> 
>    arch/arm/plat-samsung/pm-check.c: In function 's3c_pm_run_res':
> >> arch/arm/plat-samsung/pm-check.c:49:18: error: invalid operands to binary != (have 'struct list_head' and 'void *')
>       if (ptr->child != NULL)
>           ~~~~~~~~~~ ^~
> >> arch/arm/plat-samsung/pm-check.c:50:19: error: incompatible type for argument 1 of 's3c_pm_run_res'
>        s3c_pm_run_res(ptr->child, fn, arg);
>                       ^~~
>    arch/arm/plat-samsung/pm-check.c:46:13: note: expected 'struct resource *' but argument is of type 'struct list_head'
>     static void s3c_pm_run_res(struct resource *ptr, run_fn_t fn, u32 *arg)
>                 ^~~~~~~~~~~~~~
> >> arch/arm/plat-samsung/pm-check.c:60:7: error: incompatible types when assigning to type 'struct resource *' from type 'struct list_head'
>       ptr = ptr->sibling;
>           ^
> 
> vim +49 arch/arm/plat-samsung/pm-check.c
> 
> 549c7e33 arch/arm/plat-s3c/pm-check.c     Ben Dooks  2008-12-12  45  
> 549c7e33 arch/arm/plat-s3c/pm-check.c     Ben Dooks  2008-12-12  46  static void s3c_pm_run_res(struct resource *ptr, run_fn_t fn, u32 *arg)
> 549c7e33 arch/arm/plat-s3c/pm-check.c     Ben Dooks  2008-12-12  47  {
> 549c7e33 arch/arm/plat-s3c/pm-check.c     Ben Dooks  2008-12-12  48  	while (ptr != NULL) {
> 549c7e33 arch/arm/plat-s3c/pm-check.c     Ben Dooks  2008-12-12 @49  		if (ptr->child != NULL)
> 549c7e33 arch/arm/plat-s3c/pm-check.c     Ben Dooks  2008-12-12 @50  			s3c_pm_run_res(ptr->child, fn, arg);
> 549c7e33 arch/arm/plat-s3c/pm-check.c     Ben Dooks  2008-12-12  51  
> 05fee7cf arch/arm/plat-samsung/pm-check.c Toshi Kani 2016-01-26  52  		if ((ptr->flags & IORESOURCE_SYSTEM_RAM)
> 05fee7cf arch/arm/plat-samsung/pm-check.c Toshi Kani 2016-01-26  53  				== IORESOURCE_SYSTEM_RAM) {
> 549c7e33 arch/arm/plat-s3c/pm-check.c     Ben Dooks  2008-12-12  54  			S3C_PMDBG("Found system RAM at %08lx..%08lx\n",
> 840eeeb8 arch/arm/plat-s3c/pm-check.c     Ben Dooks  2008-12-12  55  				  (unsigned long)ptr->start,
> 840eeeb8 arch/arm/plat-s3c/pm-check.c     Ben Dooks  2008-12-12  56  				  (unsigned long)ptr->end);
> 549c7e33 arch/arm/plat-s3c/pm-check.c     Ben Dooks  2008-12-12  57  			arg = (fn)(ptr, arg);
> 549c7e33 arch/arm/plat-s3c/pm-check.c     Ben Dooks  2008-12-12  58  		}
> 549c7e33 arch/arm/plat-s3c/pm-check.c     Ben Dooks  2008-12-12  59  
> 549c7e33 arch/arm/plat-s3c/pm-check.c     Ben Dooks  2008-12-12 @60  		ptr = ptr->sibling;
> 549c7e33 arch/arm/plat-s3c/pm-check.c     Ben Dooks  2008-12-12  61  	}
> 549c7e33 arch/arm/plat-s3c/pm-check.c     Ben Dooks  2008-12-12  62  }
> 549c7e33 arch/arm/plat-s3c/pm-check.c     Ben Dooks  2008-12-12  63  
> 
> :::::: The code at line 49 was first introduced by commit
> :::::: 549c7e33aeb9bfe441ecf68639d2227bb90978e7 [ARM] S3C: Split the resume memory check code from pm.c
> 
> :::::: TO: Ben Dooks <ben-linux at fluff.org>
> :::::: CC: Ben Dooks <ben-linux at fluff.org>
> 
> ---
> 0-DAY kernel test infrastructure                Open Source Technology Center
> https://lists.01.org/pipermail/kbuild-all                   Intel Corporation