From: Guillaume Ranquet granquet@baylibre.com
stable inclusion from stable-5.10.47 commit 93c2aac13b0856fa7e8bf7bd59476650963292fa bugzilla: 172973 https://gitee.com/openeuler/kernel/issues/I4DAKB
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit 9041575348b21ade1fb74d790f1aac85d68198c7 ]
As recommended by the doc in: Documentation/drivers-api/dmaengine/provider.rst
Use GFP_NOWAIT to not deplete the emergency pool.
Signed-off-by: Guillaume Ranquet granquet@baylibre.com
Link: https://lore.kernel.org/r/20210513192642.29446-4-granquet@baylibre.com Signed-off-by: Vinod Koul vkoul@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Chen Jun chenjun102@huawei.com Acked-by: Weilong Chen chenweilong@huawei.com Signed-off-by: Chen Jun chenjun102@huawei.com --- drivers/dma/mediatek/mtk-uart-apdma.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/dma/mediatek/mtk-uart-apdma.c b/drivers/dma/mediatek/mtk-uart-apdma.c index a09ab2dd3b46..375e7e647df6 100644 --- a/drivers/dma/mediatek/mtk-uart-apdma.c +++ b/drivers/dma/mediatek/mtk-uart-apdma.c @@ -349,7 +349,7 @@ static struct dma_async_tx_descriptor *mtk_uart_apdma_prep_slave_sg return NULL;
/* Now allocate and setup the descriptor */ - d = kzalloc(sizeof(*d), GFP_ATOMIC); + d = kzalloc(sizeof(*d), GFP_NOWAIT); if (!d) return NULL;