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* [PATCH] cxgb4: remove unneeded variable
@ 2021-08-31  6:22 cgel.zte
  2021-08-31  8:07 ` Heiner Kallweit
                   ` (2 more replies)
  0 siblings, 3 replies; 4+ messages in thread
From: cgel.zte @ 2021-08-31  6:22 UTC (permalink / raw)
  To: rajur; +Cc: davem, kuba, netdev, linux-kernel, Chi Minghao, Zeal Robot

From: Chi Minghao <chi.minghao@zte.com.cn>

Fix the following coccicheck REVIEW:
./drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:3266:5-8 REVIEW Unneeded
variable

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Chi Minghao <chi.minghao@zte.com.cn>
---
 drivers/net/ethernet/chelsio/cxgb4/t4_hw.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
index 5e8ac42ac6ab..c986a414414b 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
@@ -3263,8 +3263,6 @@ int t4_get_scfg_version(struct adapter *adapter, u32 *vers)
  */
 int t4_get_version_info(struct adapter *adapter)
 {
-	int ret = 0;
-
 	#define FIRST_RET(__getvinfo) \
 	do { \
 		int __ret = __getvinfo; \
@@ -3280,7 +3278,7 @@ int t4_get_version_info(struct adapter *adapter)
 	FIRST_RET(t4_get_vpd_version(adapter, &adapter->params.vpd_vers));
 
 	#undef FIRST_RET
-	return ret;
+	return 0;
 }
 
 /**
-- 
2.25.1


^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: [PATCH] cxgb4: remove unneeded variable
  2021-08-31  6:22 [PATCH] cxgb4: remove unneeded variable cgel.zte
@ 2021-08-31  8:07 ` Heiner Kallweit
  2021-08-31 16:47 ` kernel test robot
  2021-09-01  9:35 ` kernel test robot
  2 siblings, 0 replies; 4+ messages in thread
From: Heiner Kallweit @ 2021-08-31  8:07 UTC (permalink / raw)
  To: cgel.zte, rajur
  Cc: davem, kuba, netdev, linux-kernel, Chi Minghao, Zeal Robot

On 31.08.2021 08:22, cgel.zte@gmail.com wrote:
> From: Chi Minghao <chi.minghao@zte.com.cn>
> 
> Fix the following coccicheck REVIEW:
> ./drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:3266:5-8 REVIEW Unneeded
> variable
> 
> Reported-by: Zeal Robot <zealci@zte.com.cn>
> Signed-off-by: Chi Minghao <chi.minghao@zte.com.cn>

This patch is simply wrong and obviously not even compile-tested.
You would have found out by looking 5s at the code of the function.
Look at what the FIRST_RET macro is doing.
Please don't blindly trust tools and check patches proposed by tools.

> ---
>  drivers/net/ethernet/chelsio/cxgb4/t4_hw.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
> index 5e8ac42ac6ab..c986a414414b 100644
> --- a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
> +++ b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
> @@ -3263,8 +3263,6 @@ int t4_get_scfg_version(struct adapter *adapter, u32 *vers)
>   */
>  int t4_get_version_info(struct adapter *adapter)
>  {
> -	int ret = 0;
> -
>  	#define FIRST_RET(__getvinfo) \
>  	do { \
>  		int __ret = __getvinfo; \
> @@ -3280,7 +3278,7 @@ int t4_get_version_info(struct adapter *adapter)
>  	FIRST_RET(t4_get_vpd_version(adapter, &adapter->params.vpd_vers));
>  
>  	#undef FIRST_RET
> -	return ret;
> +	return 0;
>  }
>  
>  /**
> 


^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: [PATCH] cxgb4: remove unneeded variable
  2021-08-31  6:22 [PATCH] cxgb4: remove unneeded variable cgel.zte
  2021-08-31  8:07 ` Heiner Kallweit
@ 2021-08-31 16:47 ` kernel test robot
  2021-09-01  9:35 ` kernel test robot
  2 siblings, 0 replies; 4+ messages in thread
From: kernel test robot @ 2021-08-31 16:47 UTC (permalink / raw)
  To: cgel.zte, rajur
  Cc: llvm, kbuild-all, davem, kuba, netdev, linux-kernel, Chi Minghao,
	Zeal Robot

[-- Attachment #1: Type: text/plain, Size: 7825 bytes --]

Hi,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on ipvs/master]
[also build test ERROR on linus/master v5.14 next-20210831]
[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]

url:    https://github.com/0day-ci/linux/commits/cgel-zte-gmail-com/cxgb4-remove-unneeded-variable/20210831-143101
base:   https://git.kernel.org/pub/scm/linux/kernel/git/horms/ipvs.git master
config: x86_64-randconfig-a016-20210831 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 4b1fde8a2b681dad2ce0c082a5d6422caa06b0bc)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/0day-ci/linux/commit/5e7aa69068077aeaa75149d0935c3d7d0e8c328f
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review cgel-zte-gmail-com/cxgb4-remove-unneeded-variable/20210831-143101
        git checkout 5e7aa69068077aeaa75149d0935c3d7d0e8c328f
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross O=build_dir ARCH=x86_64 SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

>> drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:3293:2: error: use of undeclared identifier 'ret'
           FIRST_RET(t4_get_fw_version(adapter, &adapter->params.fw_vers));
           ^
   drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:3289:17: note: expanded from macro 'FIRST_RET'
                   if (__ret && !ret) \
                                 ^
>> drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:3293:2: error: use of undeclared identifier 'ret'
   drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:3290:4: note: expanded from macro 'FIRST_RET'
                           ret = __ret; \
                           ^
   drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:3294:2: error: use of undeclared identifier 'ret'
           FIRST_RET(t4_get_bs_version(adapter, &adapter->params.bs_vers));
           ^
   drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:3289:17: note: expanded from macro 'FIRST_RET'
                   if (__ret && !ret) \
                                 ^
   drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:3294:2: error: use of undeclared identifier 'ret'
   drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:3290:4: note: expanded from macro 'FIRST_RET'
                           ret = __ret; \
                           ^
   drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:3295:2: error: use of undeclared identifier 'ret'
           FIRST_RET(t4_get_tp_version(adapter, &adapter->params.tp_vers));
           ^
   drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:3289:17: note: expanded from macro 'FIRST_RET'
                   if (__ret && !ret) \
                                 ^
   drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:3295:2: error: use of undeclared identifier 'ret'
   drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:3290:4: note: expanded from macro 'FIRST_RET'
                           ret = __ret; \
                           ^
   drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:3296:2: error: use of undeclared identifier 'ret'
           FIRST_RET(t4_get_exprom_version(adapter, &adapter->params.er_vers));
           ^
   drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:3289:17: note: expanded from macro 'FIRST_RET'
                   if (__ret && !ret) \
                                 ^
   drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:3296:2: error: use of undeclared identifier 'ret'
   drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:3290:4: note: expanded from macro 'FIRST_RET'
                           ret = __ret; \
                           ^
   drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:3297:2: error: use of undeclared identifier 'ret'
           FIRST_RET(t4_get_scfg_version(adapter, &adapter->params.scfg_vers));
           ^
   drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:3289:17: note: expanded from macro 'FIRST_RET'
                   if (__ret && !ret) \
                                 ^
   drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:3297:2: error: use of undeclared identifier 'ret'
   drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:3290:4: note: expanded from macro 'FIRST_RET'
                           ret = __ret; \
                           ^
   drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:3298:2: error: use of undeclared identifier 'ret'
           FIRST_RET(t4_get_vpd_version(adapter, &adapter->params.vpd_vers));
           ^
   drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:3289:17: note: expanded from macro 'FIRST_RET'
                   if (__ret && !ret) \
                                 ^
   drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:3298:2: error: use of undeclared identifier 'ret'
   drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:3290:4: note: expanded from macro 'FIRST_RET'
                           ret = __ret; \
                           ^
   12 errors generated.


vim +/ret +3293 drivers/net/ethernet/chelsio/cxgb4/t4_hw.c

760446f967678e Ganesh Goudar 2017-07-20  3274  
760446f967678e Ganesh Goudar 2017-07-20  3275  /**
760446f967678e Ganesh Goudar 2017-07-20  3276   *      t4_get_version_info - extract various chip/firmware version information
760446f967678e Ganesh Goudar 2017-07-20  3277   *      @adapter: the adapter
760446f967678e Ganesh Goudar 2017-07-20  3278   *
760446f967678e Ganesh Goudar 2017-07-20  3279   *      Reads various chip/firmware version numbers and stores them into the
760446f967678e Ganesh Goudar 2017-07-20  3280   *      adapter Adapter Parameters structure.  If any of the efforts fails
760446f967678e Ganesh Goudar 2017-07-20  3281   *      the first failure will be returned, but all of the version numbers
760446f967678e Ganesh Goudar 2017-07-20  3282   *      will be read.
760446f967678e Ganesh Goudar 2017-07-20  3283   */
760446f967678e Ganesh Goudar 2017-07-20  3284  int t4_get_version_info(struct adapter *adapter)
760446f967678e Ganesh Goudar 2017-07-20  3285  {
760446f967678e Ganesh Goudar 2017-07-20  3286  	#define FIRST_RET(__getvinfo) \
760446f967678e Ganesh Goudar 2017-07-20  3287  	do { \
760446f967678e Ganesh Goudar 2017-07-20  3288  		int __ret = __getvinfo; \
760446f967678e Ganesh Goudar 2017-07-20  3289  		if (__ret && !ret) \
760446f967678e Ganesh Goudar 2017-07-20  3290  			ret = __ret; \
760446f967678e Ganesh Goudar 2017-07-20  3291  	} while (0)
760446f967678e Ganesh Goudar 2017-07-20  3292  
760446f967678e Ganesh Goudar 2017-07-20 @3293  	FIRST_RET(t4_get_fw_version(adapter, &adapter->params.fw_vers));
760446f967678e Ganesh Goudar 2017-07-20  3294  	FIRST_RET(t4_get_bs_version(adapter, &adapter->params.bs_vers));
760446f967678e Ganesh Goudar 2017-07-20  3295  	FIRST_RET(t4_get_tp_version(adapter, &adapter->params.tp_vers));
760446f967678e Ganesh Goudar 2017-07-20  3296  	FIRST_RET(t4_get_exprom_version(adapter, &adapter->params.er_vers));
760446f967678e Ganesh Goudar 2017-07-20  3297  	FIRST_RET(t4_get_scfg_version(adapter, &adapter->params.scfg_vers));
760446f967678e Ganesh Goudar 2017-07-20  3298  	FIRST_RET(t4_get_vpd_version(adapter, &adapter->params.vpd_vers));
760446f967678e Ganesh Goudar 2017-07-20  3299  
760446f967678e Ganesh Goudar 2017-07-20  3300  	#undef FIRST_RET
5e7aa69068077a Chi Minghao   2021-08-30  3301  	return 0;
760446f967678e Ganesh Goudar 2017-07-20  3302  }
760446f967678e Ganesh Goudar 2017-07-20  3303  

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 36602 bytes --]

^ permalink raw reply	[flat|nested] 4+ messages in thread

* Re: [PATCH] cxgb4: remove unneeded variable
  2021-08-31  6:22 [PATCH] cxgb4: remove unneeded variable cgel.zte
  2021-08-31  8:07 ` Heiner Kallweit
  2021-08-31 16:47 ` kernel test robot
@ 2021-09-01  9:35 ` kernel test robot
  2 siblings, 0 replies; 4+ messages in thread
From: kernel test robot @ 2021-09-01  9:35 UTC (permalink / raw)
  To: cgel.zte, rajur
  Cc: kbuild-all, davem, kuba, netdev, linux-kernel, Chi Minghao, Zeal Robot

[-- Attachment #1: Type: text/plain, Size: 4735 bytes --]

Hi,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on ipvs/master]
[also build test ERROR on linus/master sparc-next/master v5.14 next-20210831]
[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]

url:    https://github.com/0day-ci/linux/commits/cgel-zte-gmail-com/cxgb4-remove-unneeded-variable/20210831-143101
base:   https://git.kernel.org/pub/scm/linux/kernel/git/horms/ipvs.git master
config: i386-randconfig-a001-20210831 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        # https://github.com/0day-ci/linux/commit/5e7aa69068077aeaa75149d0935c3d7d0e8c328f
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review cgel-zte-gmail-com/cxgb4-remove-unneeded-variable/20210831-143101
        git checkout 5e7aa69068077aeaa75149d0935c3d7d0e8c328f
        # save the attached .config to linux build tree
        mkdir build_dir
        make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   drivers/net/ethernet/chelsio/cxgb4/t4_hw.c: In function 't4_get_version_info':
>> drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:3289:17: error: 'ret' undeclared (first use in this function); did you mean 'net'?
    3289 |   if (__ret && !ret) \
         |                 ^~~
   drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:3293:2: note: in expansion of macro 'FIRST_RET'
    3293 |  FIRST_RET(t4_get_fw_version(adapter, &adapter->params.fw_vers));
         |  ^~~~~~~~~
   drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:3289:17: note: each undeclared identifier is reported only once for each function it appears in
    3289 |   if (__ret && !ret) \
         |                 ^~~
   drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:3293:2: note: in expansion of macro 'FIRST_RET'
    3293 |  FIRST_RET(t4_get_fw_version(adapter, &adapter->params.fw_vers));
         |  ^~~~~~~~~


vim +3289 drivers/net/ethernet/chelsio/cxgb4/t4_hw.c

760446f967678e Ganesh Goudar 2017-07-20  3274  
760446f967678e Ganesh Goudar 2017-07-20  3275  /**
760446f967678e Ganesh Goudar 2017-07-20  3276   *      t4_get_version_info - extract various chip/firmware version information
760446f967678e Ganesh Goudar 2017-07-20  3277   *      @adapter: the adapter
760446f967678e Ganesh Goudar 2017-07-20  3278   *
760446f967678e Ganesh Goudar 2017-07-20  3279   *      Reads various chip/firmware version numbers and stores them into the
760446f967678e Ganesh Goudar 2017-07-20  3280   *      adapter Adapter Parameters structure.  If any of the efforts fails
760446f967678e Ganesh Goudar 2017-07-20  3281   *      the first failure will be returned, but all of the version numbers
760446f967678e Ganesh Goudar 2017-07-20  3282   *      will be read.
760446f967678e Ganesh Goudar 2017-07-20  3283   */
760446f967678e Ganesh Goudar 2017-07-20  3284  int t4_get_version_info(struct adapter *adapter)
760446f967678e Ganesh Goudar 2017-07-20  3285  {
760446f967678e Ganesh Goudar 2017-07-20  3286  	#define FIRST_RET(__getvinfo) \
760446f967678e Ganesh Goudar 2017-07-20  3287  	do { \
760446f967678e Ganesh Goudar 2017-07-20  3288  		int __ret = __getvinfo; \
760446f967678e Ganesh Goudar 2017-07-20 @3289  		if (__ret && !ret) \
760446f967678e Ganesh Goudar 2017-07-20  3290  			ret = __ret; \
760446f967678e Ganesh Goudar 2017-07-20  3291  	} while (0)
760446f967678e Ganesh Goudar 2017-07-20  3292  
760446f967678e Ganesh Goudar 2017-07-20  3293  	FIRST_RET(t4_get_fw_version(adapter, &adapter->params.fw_vers));
760446f967678e Ganesh Goudar 2017-07-20  3294  	FIRST_RET(t4_get_bs_version(adapter, &adapter->params.bs_vers));
760446f967678e Ganesh Goudar 2017-07-20  3295  	FIRST_RET(t4_get_tp_version(adapter, &adapter->params.tp_vers));
760446f967678e Ganesh Goudar 2017-07-20  3296  	FIRST_RET(t4_get_exprom_version(adapter, &adapter->params.er_vers));
760446f967678e Ganesh Goudar 2017-07-20  3297  	FIRST_RET(t4_get_scfg_version(adapter, &adapter->params.scfg_vers));
760446f967678e Ganesh Goudar 2017-07-20  3298  	FIRST_RET(t4_get_vpd_version(adapter, &adapter->params.vpd_vers));
760446f967678e Ganesh Goudar 2017-07-20  3299  
760446f967678e Ganesh Goudar 2017-07-20  3300  	#undef FIRST_RET
5e7aa69068077a Chi Minghao   2021-08-30  3301  	return 0;
760446f967678e Ganesh Goudar 2017-07-20  3302  }
760446f967678e Ganesh Goudar 2017-07-20  3303  

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

[-- Attachment #2: .config.gz --]
[-- Type: application/gzip, Size: 43223 bytes --]

^ permalink raw reply	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2021-09-01  9:35 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-08-31  6:22 [PATCH] cxgb4: remove unneeded variable cgel.zte
2021-08-31  8:07 ` Heiner Kallweit
2021-08-31 16:47 ` kernel test robot
2021-09-01  9:35 ` kernel test robot

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