UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

scsi: ibmvscsi: Use GFP_KERNEL with dma_alloc_coherent() in initialize_event_pool() 

During driver probe we allocate a dma region for our event pool.
Currently, zero is passed for the gfp_flags parameter. Driver probe
callbacks are run in process context and we hold no locks so we can sleep
here if necessary.

Fix by passing GFP_KERNEL explicitly to dma_alloc_coherent().

Link: https://lore.kernel.org/r/1547089149-20577-1-git-send-email-tyreld@linux.vnet.ibm.com
Reviewed-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Tyrel Datwyler 2019-01-09 18:59:09 -08:00 committed by Martin K. Petersen
parent 30e99f05f8
commit 3319a8ba82
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/scsi/ibmvscsi/ibmvscsi.c
View File

@ -454,7 +454,7 @@ static int initialize_event_pool(struct event_pool *pool,
pool->iu_storage =
dma_alloc_coherent(hostdata->dev,
pool->size * sizeof(*pool->iu_storage),
&pool->iu_token, 0);
&pool->iu_token, GFP_KERNEL);
if (!pool->iu_storage) {
kfree(pool->events);
return -ENOMEM;