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

drm/prime: fix sgt NULL checking 

The drm_gem_map_detach() can be called with sgt is NULL.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Joonyoung Shim 2013-07-04 16:19:12 +09:00 committed by Dave Airlie
parent 63eef6002b
commit f9d8a1294d
1 changed files with 6 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/gpu/drm/drm_prime.c
View File

@ -119,12 +119,13 @@ static void drm_gem_map_detach(struct dma_buf *dma_buf,
return;
sgt = prime_attach->sgt;
if (sgt) {
if (prime_attach->dir != DMA_NONE)
dma_unmap_sg(attach->dev, sgt->sgl, sgt->nents,
prime_attach->dir);
sg_free_table(sgt);
}
if (prime_attach->dir != DMA_NONE)
dma_unmap_sg(attach->dev, sgt->sgl, sgt->nents,
prime_attach->dir);
sg_free_table(sgt);
kfree(sgt);
kfree(prime_attach);
attach->priv = NULL;