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[v2,3/3] scsi: qla2xxx: remove unused variable 'status'

Message ID 20210726201924.3202278-4-morbo@google.com (mailing list archive)
State Accepted
Headers show
Series [v2,1/3] base: mark 'no_warn' as unused | expand

Commit Message

Bill Wendling July 26, 2021, 8:19 p.m. UTC 
Fix the clang build warning:

  drivers/scsi/qla2xxx/qla_nx.c:2209:6: error: variable 'status' set but not used [-Werror,-Wunused-but-set-variable]
        int status = 0;

Signed-off-by: Bill Wendling <morbo@google.com>
---
 drivers/scsi/qla2xxx/qla_nx.c | 2 --
 1 file changed, 2 deletions(-)

Comments

Nathan Chancellor July 26, 2021, 8:40 p.m. UTC | #1 
On 7/26/2021 1:19 PM, 'Bill Wendling' via Clang Built Linux wrote:
> Fix the clang build warning:
> 
>    drivers/scsi/qla2xxx/qla_nx.c:2209:6: error: variable 'status' set but not used [-Werror,-Wunused-but-set-variable]
>          int status = 0;
> 
> Signed-off-by: Bill Wendling <morbo@google.com>

It has been unused since the function's introduction in commit 
a9083016a531 ("[SCSI] qla2xxx: Add ISP82XX support.").

Reviewed-by: Nathan Chancellor <nathan@kernel.org>

> ---
>   drivers/scsi/qla2xxx/qla_nx.c | 2 --
>   1 file changed, 2 deletions(-)
> 
> diff --git a/drivers/scsi/qla2xxx/qla_nx.c b/drivers/scsi/qla2xxx/qla_nx.c
> index 615e44af1ca6..11aad97dfca8 100644
> --- a/drivers/scsi/qla2xxx/qla_nx.c
> +++ b/drivers/scsi/qla2xxx/qla_nx.c
> @@ -2166,7 +2166,6 @@ qla82xx_poll(int irq, void *dev_id)
>   	struct qla_hw_data *ha;
>   	struct rsp_que *rsp;
>   	struct device_reg_82xx __iomem *reg;
> -	int status = 0;
>   	uint32_t stat;
>   	uint32_t host_int = 0;
>   	uint16_t mb[8];
> @@ -2195,7 +2194,6 @@ qla82xx_poll(int irq, void *dev_id)
>   		case 0x10:
>   		case 0x11:
>   			qla82xx_mbx_completion(vha, MSW(stat));
> -			status |= MBX_INTERRUPT;
>   			break;
>   		case 0x12:
>   			mb[0] = MSW(stat);
>
Martin K. Petersen July 27, 2021, 3:14 a.m. UTC | #2 
Bill,

> Fix the clang build warning:
>
>   drivers/scsi/qla2xxx/qla_nx.c:2209:6: error: variable 'status' set but not used [-Werror,-Wunused-but-set-variable]
>         int status = 0;

Applied to 5.15/scsi-staging, thanks!
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Patch

diff --git a/drivers/scsi/qla2xxx/qla_nx.c b/drivers/scsi/qla2xxx/qla_nx.c
index 615e44af1ca6..11aad97dfca8 100644
--- a/drivers/scsi/qla2xxx/qla_nx.c
+++ b/drivers/scsi/qla2xxx/qla_nx.c
@@ -2166,7 +2166,6 @@  qla82xx_poll(int irq, void *dev_id)
 	struct qla_hw_data *ha;
 	struct rsp_que *rsp;
 	struct device_reg_82xx __iomem *reg;
-	int status = 0;
 	uint32_t stat;
 	uint32_t host_int = 0;
 	uint16_t mb[8];
@@ -2195,7 +2194,6 @@  qla82xx_poll(int irq, void *dev_id)
 		case 0x10:
 		case 0x11:
 			qla82xx_mbx_completion(vha, MSW(stat));
-			status |= MBX_INTERRUPT;
 			break;
 		case 0x12:
 			mb[0] = MSW(stat);