Re: [PATCH] scsi: elx: efct: Avoid a useless memset

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Le 09/12/2021 à 22:57, Joe Perches a écrit :
On Thu, 2021-12-09 at 22:51 +0100, Christophe JAILLET wrote:
'io->sgl' is kzalloced just a few lines above. There is no need to memset
it another time.

Better to use kcalloc as well and delete the memset

Sure, thanks for spotting it Joe.

Should a clean v2 be sent or the patch in your reply is enough?
As your proposal is better than mine, if a v2 is needed, can you do it?

CJ



diff --git a/drivers/scsi/elx/efct/efct_io.c b/drivers/scsi/elx/efct/efct_io.c
[]
@@ -62,7 +62,6 @@ efct_io_pool_create(struct efct *efct, u32 num_sgl)
  			return NULL;
  		}
- memset(io->sgl, 0, sizeof(*io->sgl) * num_sgl);
  		io->sgl_allocated = num_sgl;
  		io->sgl_count = 0;

---
  drivers/scsi/elx/efct/efct_io.c | 3 +--
  1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/scsi/elx/efct/efct_io.c b/drivers/scsi/elx/efct/efct_io.c
index 71e21655916a9..109483f3e3dfd 100644
--- a/drivers/scsi/elx/efct/efct_io.c
+++ b/drivers/scsi/elx/efct/efct_io.c
@@ -56,13 +56,12 @@ efct_io_pool_create(struct efct *efct, u32 num_sgl)
  		}
/* Allocate SGL */
-		io->sgl = kzalloc(sizeof(*io->sgl) * num_sgl, GFP_KERNEL);
+		io->sgl = kcalloc(num_sgl, sizeof(*io->sgl), GFP_KERNEL);
  		if (!io->sgl) {
  			efct_io_pool_free(io_pool);
  			return NULL;
  		}
- memset(io->sgl, 0, sizeof(*io->sgl) * num_sgl);
  		io->sgl_allocated = num_sgl;
  		io->sgl_count = 0;




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