leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

mmc: jz4740_mmc: Fix error check for dma_map_sg

Browse Source 
dma_map_sg return 0 on error.

Signed-off-by: Jack Wang <jinpu.wang@ionos.com>
Acked-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20220825074008.33349-3-jinpu.wang@ionos.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Jack Wang 2022-08-25 09:40:08 +02:00 committed by Ulf Hansson
parent f7865ad8b4
commit 8827f85e30
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/mmc/host/jz4740_mmc.c
View File

@ -298,7 +298,7 @@ static int jz4740_mmc_prepare_dma_data(struct jz4740_mmc_host *host,
{
struct dma_chan *chan = jz4740_mmc_get_dma_chan(host, data);
enum dma_data_direction dir = mmc_get_dma_dir(data);
int sg_count;
unsigned int sg_count;
if (data->host_cookie == COOKIE_PREMAPPED)
return data->sg_count;
@ -308,7 +308,7 @@ static int jz4740_mmc_prepare_dma_data(struct jz4740_mmc_host *host,
data->sg_len,
dir);
if (sg_count <= 0) {
if (!sg_count) {
dev_err(mmc_dev(host->mmc),
"Failed to map scatterlist for DMA operation\n");
return -EINVAL;