[PATCH] scsi: qla2xxx: Fix the size used in a 'dma_free_coherent()' call

[PATCH] scsi: qla2xxx: Fix the size used in a 'dma_free_coherent()' call

[Christophe JAILLET]

Update the size used in 'dma_free_coherent()' in order to match the one
used in the corresponding 'dma_alloc_coherent()'.

While at it, remove a memset after a call to 'dma_alloc_coherent()'.
This is useless since
commit 518a2f1925c3 ("dma-mapping: zero memory returned from dma_alloc_*")

Fixes: 4161cee52df8 ("[SCSI] qla4xxx: Add host statistics support")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
The memset has been added in the same commit, so I think it is ok to
remove it in the same path.
---
 drivers/scsi/qla2xxx/qla_mbx.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c
index 73883435ab58..a43d7229f9a1 100644
--- a/drivers/scsi/qla2xxx/qla_mbx.c
+++ b/drivers/scsi/qla2xxx/qla_mbx.c
@@ -4933,8 +4933,6 @@ qla25xx_set_els_cmds_supported(scsi_qla_host_t *vha)
 		return QLA_MEMORY_ALLOC_FAILED;
 	}
 
-	memset(els_cmd_map, 0, ELS_CMD_MAP_SIZE);
-
 	/* List of Purex ELS */
 	cmd_opcode[0] = ELS_FPIN;
 	cmd_opcode[1] = ELS_RDP;
@@ -4966,7 +4964,7 @@ qla25xx_set_els_cmds_supported(scsi_qla_host_t *vha)
 		    "Done %s.\n", __func__);
 	}
 
-	dma_free_coherent(&ha->pdev->dev, DMA_POOL_SIZE,
+	dma_free_coherent(&ha->pdev->dev, ELS_CMD_MAP_SIZE,
 	   els_cmd_map, els_cmd_map_dma);
 
 	return rval;
-- 
2.25.1

Re: [PATCH] scsi: qla2xxx: Fix the size used in a 'dma_free_coherent()' call

[Martin K. Petersen]

On Sun, 2 Aug 2020 13:07:21 +0200, Christophe JAILLET wrote:

> Update the size used in 'dma_free_coherent()' in order to match the one
> used in the corresponding 'dma_alloc_coherent()'.
> 
> While at it, remove a memset after a call to 'dma_alloc_coherent()'.
> This is useless since
> commit 518a2f1925c3 ("dma-mapping: zero memory returned from dma_alloc_*")

Applied to 5.10/scsi-queue, thanks!

[1/1] scsi: qla2xxx: Fix the size used in a 'dma_free_coherent()' call
      https://git.kernel.org/mkp/scsi/c/650b323c8e7c

-- 
Martin K. Petersen	Oracle Linux Engineering