From: Lucas Stach <l.stach@pengutronix.de>
Date: Tue, 6 Nov 2018 03:40:37 +0000 (+0000)
Subject: dmaengine: imx-sdma: use GFP_NOWAIT for dma descriptor allocations
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=64068853bc77786d1a28abb4087d6a3e93aedbe2;p=openwrt%2Fstaging%2Fblogic.git

dmaengine: imx-sdma: use GFP_NOWAIT for dma descriptor allocations

DMA buffer descriptors aren't allocated from atomic context, so they
can use the less heavyweigth GFP_NOWAIT.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Robin Gong <yibin.gong@nxp.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
---

diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index 03d46f1b0826..cb1b44d78a1f 100644
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -1214,7 +1214,7 @@ static int sdma_alloc_bd(struct sdma_desc *desc)
 	int ret = 0;
 
 	desc->bd = dma_zalloc_coherent(NULL, bd_size, &desc->bd_phys,
-					GFP_ATOMIC);
+					GFP_NOWAIT);
 	if (!desc->bd) {
 		ret = -ENOMEM;
 		goto out;