2017-03-15 16:46:35

by Colin King

Subject: [PATCH] [SCSI] esas2r: remove redundant NULL check on buffer

From: Colin Ian King <[email protected]>

buffer is a pointer to the static char array event_buffer and
therefore can never be null, so the check is redundant. Remove it.

Detected by CoverityScan, CID#1077556 ("Logically Dead Code")

Signed-off-by: Colin Ian King <[email protected]>
---
drivers/scsi/esas2r/esas2r_log.c | 5 -----
1 file changed, 5 deletions(-)

diff --git a/drivers/scsi/esas2r/esas2r_log.c b/drivers/scsi/esas2r/esas2r_log.c
index a82030a..65fdf22 100644
--- a/drivers/scsi/esas2r/esas2r_log.c
+++ b/drivers/scsi/esas2r/esas2r_log.c
@@ -130,11 +130,6 @@ static int esas2r_log_master(const long level,

spin_lock_irqsave(&event_buffer_lock, flags);

- if (buffer == NULL) {
- spin_unlock_irqrestore(&event_buffer_lock, flags);
- return -1;
- }
-
memset(buffer, 0, buflen);

/*
--
2.10.2

2017-03-16 22:43:47

by Grove, Bradley

Subject: Re: [PATCH] [SCSI] esas2r: remove redundant NULL check on buffer

On 03/15/2017 12:46 PM, Colin King wrote:
> From: Colin Ian King <[email protected]>
>
> buffer is a pointer to the static char array event_buffer and
> therefore can never be null, so the check is redundant. Remove it.
>
> Detected by CoverityScan, CID#1077556 ("Logically Dead Code")
>
> Signed-off-by: Colin Ian King <[email protected]>
> ---
> drivers/scsi/esas2r/esas2r_log.c | 5 -----
> 1 file changed, 5 deletions(-)
>
> diff --git a/drivers/scsi/esas2r/esas2r_log.c b/drivers/scsi/esas2r/esas2r_log.c
> index a82030a..65fdf22 100644
> --- a/drivers/scsi/esas2r/esas2r_log.c
> +++ b/drivers/scsi/esas2r/esas2r_log.c
> @@ -130,11 +130,6 @@ static int esas2r_log_master(const long level,
>
> spin_lock_irqsave(&event_buffer_lock, flags);
>
> - if (buffer == NULL) {
> - spin_unlock_irqrestore(&event_buffer_lock, flags);
> - return -1;
> - }
> -
> memset(buffer, 0, buflen);
>
> /*
>

Thanks,

Acked-by: Bradley Grove <[email protected]>



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2017-03-16 23:50:39

by Martin K. Petersen

Subject: Re: [PATCH] [SCSI] esas2r: remove redundant NULL check on buffer

Colin King <[email protected]> writes:

> buffer is a pointer to the static char array event_buffer and
> therefore can never be null, so the check is redundant. Remove it.

Applied to 4.12/scsi-queue. Thank you!

--
Martin K. Petersen Oracle Linux Engineering