korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-27 14:14:24 +08:00
Code Issues Packages Projects Releases Wiki Activity

dmaengine: pl330: fix wrong usage of spinlock flags in dma_cyclc

Browse Source 
flags varible which is the input parameter of pl330_prep_dma_cyclic()
should not be used by spinlock_irq[save/restore] function.

Signed-off-by: Jongho Park <jongho7.park@samsung.com>
Signed-off-by: Bumyong Lee <bumyong.lee@samsung.com>
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Link: https://lore.kernel.org/r/20210507063647.111209-1-chanho61.park@samsung.com
Fixes: f6f2421c0a ("dmaengine: pl330: Merge dma_pl330_dmac and pl330_dmac structs")
Cc: stable@vger.kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Bumyong Lee 2021-05-07 15:36:47 +09:00 committed by Vinod Koul
parent 17866bc6b2
commit 4ad5dd2d78
1 changed files with 4 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/dma/pl330.c
View File

@ -2694,13 +2694,15 @@ static struct dma_async_tx_descriptor *pl330_prep_dma_cyclic(
for (i = 0; i < len / period_len; i++) {
desc = pl330_get_desc(pch);
if (!desc) {
unsigned long iflags;
dev_err(pch->dmac->ddma.dev, "%s:%d Unable to fetch desc\n",
__func__, __LINE__);
if (!first)
return NULL;
spin_lock_irqsave(&pl330->pool_lock, flags);
spin_lock_irqsave(&pl330->pool_lock, iflags);
while (!list_empty(&first->node)) {
desc = list_entry(first->node.next,
@ -2710,7 +2712,7 @@ static struct dma_async_tx_descriptor *pl330_prep_dma_cyclic(
list_move_tail(&first->node, &pl330->desc_pool);
spin_unlock_irqrestore(&pl330->pool_lock, flags);
spin_unlock_irqrestore(&pl330->pool_lock, iflags);
return NULL;
}