[PATCH net-next 3/5] net: sparx5: add port mirroring implementation
kernel test robot
lkp at intel.com
Thu Apr 18 11:43:16 PDT 2024
Hi Daniel,
kernel test robot noticed the following build warnings:
[auto build test WARNING on 1c25fe9a044d5334153a3585754b26553f8287b9]
url: https://github.com/intel-lab-lkp/linux/commits/Daniel-Machon/net-sparx5-add-new-register-definitions/20240418-155244
base: 1c25fe9a044d5334153a3585754b26553f8287b9
patch link: https://lore.kernel.org/r/20240418-port-mirroring-v1-3-e05c35007c55%40microchip.com
patch subject: [PATCH net-next 3/5] net: sparx5: add port mirroring implementation
config: hexagon-allyesconfig (https://download.01.org/0day-ci/archive/20240419/202404190240.Iei7Gkj3-lkp@intel.com/config)
compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project 7089c359a3845323f6f30c44a47dd901f2edfe63)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240419/202404190240.Iei7Gkj3-lkp@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/202404190240.Iei7Gkj3-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from drivers/net/ethernet/microchip/sparx5/sparx5_mirror.c:7:
In file included from drivers/net/ethernet/microchip/sparx5/sparx5_main.h:11:
In file included from include/linux/phy/phy.h:17:
In file included from include/linux/regulator/consumer.h:35:
In file included from include/linux/suspend.h:5:
In file included from include/linux/swap.h:9:
In file included from include/linux/memcontrol.h:13:
In file included from include/linux/cgroup.h:26:
In file included from include/linux/kernel_stat.h:9:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:328:
include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
547 | val = __raw_readb(PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
560 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu'
37 | #define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
| ^
In file included from drivers/net/ethernet/microchip/sparx5/sparx5_mirror.c:7:
In file included from drivers/net/ethernet/microchip/sparx5/sparx5_main.h:11:
In file included from include/linux/phy/phy.h:17:
In file included from include/linux/regulator/consumer.h:35:
In file included from include/linux/suspend.h:5:
In file included from include/linux/swap.h:9:
In file included from include/linux/memcontrol.h:13:
In file included from include/linux/cgroup.h:26:
In file included from include/linux/kernel_stat.h:9:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:328:
include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
573 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/little_endian.h:35:51: note: expanded from macro '__le32_to_cpu'
35 | #define __le32_to_cpu(x) ((__force __u32)(__le32)(x))
| ^
In file included from drivers/net/ethernet/microchip/sparx5/sparx5_mirror.c:7:
In file included from drivers/net/ethernet/microchip/sparx5/sparx5_main.h:11:
In file included from include/linux/phy/phy.h:17:
In file included from include/linux/regulator/consumer.h:35:
In file included from include/linux/suspend.h:5:
In file included from include/linux/swap.h:9:
In file included from include/linux/memcontrol.h:13:
In file included from include/linux/cgroup.h:26:
In file included from include/linux/kernel_stat.h:9:
In file included from include/linux/interrupt.h:11:
In file included from include/linux/hardirq.h:11:
In file included from ./arch/hexagon/include/generated/asm/hardirq.h:1:
In file included from include/asm-generic/hardirq.h:17:
In file included from include/linux/irq.h:20:
In file included from include/linux/io.h:13:
In file included from arch/hexagon/include/asm/io.h:328:
include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
584 | __raw_writeb(value, PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
594 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
604 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
In file included from drivers/net/ethernet/microchip/sparx5/sparx5_mirror.c:7:
In file included from drivers/net/ethernet/microchip/sparx5/sparx5_main.h:11:
In file included from include/linux/phy/phy.h:17:
In file included from include/linux/regulator/consumer.h:35:
In file included from include/linux/suspend.h:5:
In file included from include/linux/swap.h:9:
In file included from include/linux/memcontrol.h:21:
In file included from include/linux/mm.h:2208:
include/linux/vmstat.h:522:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
522 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
| ~~~~~~~~~~~ ^ ~~~
>> drivers/net/ethernet/microchip/sparx5/sparx5_mirror.c:36:12: warning: comparison of distinct pointer types ('typeof ((reg)) *' (aka 'unsigned int *') and 'uint64_t *' (aka 'unsigned long long *')) [-Wcompare-distinct-pointer-types]
36 | val = BIT(do_div(reg, 32));
| ~~~~^~~~~~~~~~~~~~~~
include/asm-generic/div64.h:222:28: note: expanded from macro 'do_div'
222 | (void)(((typeof((n)) *)0) == ((uint64_t *)0)); \
| ^ ~~~~~~~~~~~~~~~
include/vdso/bits.h:7:30: note: expanded from macro 'BIT'
7 | #define BIT(nr) (UL(1) << (nr))
| ^~
drivers/net/ethernet/microchip/sparx5/sparx5_mirror.c:36:12: error: incompatible pointer types passing 'u32 *' (aka 'unsigned int *') to parameter of type 'uint64_t *' (aka 'unsigned long long *') [-Werror,-Wincompatible-pointer-types]
36 | val = BIT(do_div(reg, 32));
| ~~~~^~~~~~~~~~~~~~~~
include/asm-generic/div64.h:238:22: note: expanded from macro 'do_div'
238 | __rem = __div64_32(&(n), __base); \
| ^
include/vdso/bits.h:7:30: note: expanded from macro 'BIT'
7 | #define BIT(nr) (UL(1) << (nr))
| ^~
include/asm-generic/div64.h:213:38: note: passing argument to parameter 'dividend' here
213 | extern uint32_t __div64_32(uint64_t *dividend, uint32_t divisor);
| ^
>> drivers/net/ethernet/microchip/sparx5/sparx5_mirror.c:36:12: warning: shift count >= width of type [-Wshift-count-overflow]
36 | val = BIT(do_div(reg, 32));
| ^~~~~~~~~~~~~~~
include/asm-generic/div64.h:234:25: note: expanded from macro 'do_div'
234 | } else if (likely(((n) >> 32) == 0)) { \
| ^ ~~
include/linux/compiler.h:76:40: note: expanded from macro 'likely'
76 | # define likely(x) __builtin_expect(!!(x), 1)
| ^
include/vdso/bits.h:7:30: note: expanded from macro 'BIT'
7 | #define BIT(nr) (UL(1) << (nr))
| ^~
drivers/net/ethernet/microchip/sparx5/sparx5_mirror.c:49:12: warning: comparison of distinct pointer types ('typeof ((reg)) *' (aka 'unsigned int *') and 'uint64_t *' (aka 'unsigned long long *')) [-Wcompare-distinct-pointer-types]
49 | val = BIT(do_div(reg, 32));
| ~~~~^~~~~~~~~~~~~~~~
include/asm-generic/div64.h:222:28: note: expanded from macro 'do_div'
222 | (void)(((typeof((n)) *)0) == ((uint64_t *)0)); \
| ^ ~~~~~~~~~~~~~~~
include/vdso/bits.h:7:30: note: expanded from macro 'BIT'
7 | #define BIT(nr) (UL(1) << (nr))
| ^~
drivers/net/ethernet/microchip/sparx5/sparx5_mirror.c:49:12: error: incompatible pointer types passing 'u32 *' (aka 'unsigned int *') to parameter of type 'uint64_t *' (aka 'unsigned long long *') [-Werror,-Wincompatible-pointer-types]
49 | val = BIT(do_div(reg, 32));
| ~~~~^~~~~~~~~~~~~~~~
include/asm-generic/div64.h:238:22: note: expanded from macro 'do_div'
238 | __rem = __div64_32(&(n), __base); \
| ^
include/vdso/bits.h:7:30: note: expanded from macro 'BIT'
7 | #define BIT(nr) (UL(1) << (nr))
| ^~
include/asm-generic/div64.h:213:38: note: passing argument to parameter 'dividend' here
213 | extern uint32_t __div64_32(uint64_t *dividend, uint32_t divisor);
| ^
drivers/net/ethernet/microchip/sparx5/sparx5_mirror.c:49:12: warning: shift count >= width of type [-Wshift-count-overflow]
49 | val = BIT(do_div(reg, 32));
| ^~~~~~~~~~~~~~~
include/asm-generic/div64.h:234:25: note: expanded from macro 'do_div'
234 | } else if (likely(((n) >> 32) == 0)) { \
| ^ ~~
include/linux/compiler.h:76:40: note: expanded from macro 'likely'
76 | # define likely(x) __builtin_expect(!!(x), 1)
| ^
include/vdso/bits.h:7:30: note: expanded from macro 'BIT'
7 | #define BIT(nr) (UL(1) << (nr))
| ^~
11 warnings and 2 errors generated.
vim +36 drivers/net/ethernet/microchip/sparx5/sparx5_mirror.c
30
31 /* Add port to mirror (only front ports) */
32 static void sparx5_mirror_port_add(struct sparx5 *sparx5, u32 idx, u32 portno)
33 {
34 u32 val, reg = portno;
35
> 36 val = BIT(do_div(reg, 32));
37
38 if (reg == 0)
39 return spx5_rmw(val, val, sparx5, ANA_AC_PROBE_PORT_CFG(idx));
40 else
41 return spx5_rmw(val, val, sparx5, ANA_AC_PROBE_PORT_CFG1(idx));
42 }
43
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