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dmaengine: pl330: fix wrong usage of spinlock flags in dma_cyclc
commit4ad5dd2d78
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@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> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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1 changed files with 4 additions and 2 deletions
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@ -2690,13 +2690,15 @@ static struct dma_async_tx_descriptor *pl330_prep_dma_cyclic(
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for (i = 0; i < len / period_len; i++) {
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desc = pl330_get_desc(pch);
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if (!desc) {
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unsigned long iflags;
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dev_err(pch->dmac->ddma.dev, "%s:%d Unable to fetch desc\n",
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__func__, __LINE__);
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if (!first)
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return NULL;
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spin_lock_irqsave(&pl330->pool_lock, flags);
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spin_lock_irqsave(&pl330->pool_lock, iflags);
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while (!list_empty(&first->node)) {
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desc = list_entry(first->node.next,
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@ -2706,7 +2708,7 @@ static struct dma_async_tx_descriptor *pl330_prep_dma_cyclic(
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list_move_tail(&first->node, &pl330->desc_pool);
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spin_unlock_irqrestore(&pl330->pool_lock, flags);
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spin_unlock_irqrestore(&pl330->pool_lock, iflags);
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return NULL;
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}
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