From: Bumyong Lee <bumyong.lee@xxxxxxxxxxx> commit 4ad5dd2d7876d79507a20f026507d1a93b8fff10 upstream. 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@xxxxxxxxxxx> Signed-off-by: Bumyong Lee <bumyong.lee@xxxxxxxxxxx> Signed-off-by: Chanho Park <chanho61.park@xxxxxxxxxxx> Link: https://lore.kernel.org/r/20210507063647.111209-1-chanho61.park@xxxxxxxxxxx Fixes: f6f2421c0a1c ("dmaengine: pl330: Merge dma_pl330_dmac and pl330_dmac structs") Cc: stable@xxxxxxxxxxxxxxx Signed-off-by: Vinod Koul <vkoul@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/dma/pl330.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) --- a/drivers/dma/pl330.c +++ b/drivers/dma/pl330.c @@ -2690,13 +2690,15 @@ static struct dma_async_tx_descriptor *p 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, @@ -2706,7 +2708,7 @@ static struct dma_async_tx_descriptor *p list_move_tail(&first->node, &pl330->desc_pool); - spin_unlock_irqrestore(&pl330->pool_lock, flags); + spin_unlock_irqrestore(&pl330->pool_lock, iflags); return NULL; }
