From: Mika Westerberg <mika.westerberg@linux.intel.com>
Date: Tue, 18 Jun 2013 14:29:44 +0000 (+0300)
Subject: spi/pxa2xx: use GFP_ATOMIC in sg table allocation
X-Git-Tag: accepted/tizen/common/20141203.182822~1946^2~23^2~1
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5548f98c46538d1da04eff179a52e50537d11465;p=platform%2Fkernel%2Flinux-arm64.git

spi/pxa2xx: use GFP_ATOMIC in sg table allocation

pxa2xx_spi_map_dma_buffer() gets called in tasklet context so we can't
sleep when we allocate a new sg table. Use GFP_ATOMIC here instead.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Cc: stable@vger.kernel.org
---

diff --git a/drivers/spi/spi-pxa2xx-dma.c b/drivers/spi/spi-pxa2xx-dma.c
index c735c5a..6427600 100644
--- a/drivers/spi/spi-pxa2xx-dma.c
+++ b/drivers/spi/spi-pxa2xx-dma.c
@@ -59,7 +59,7 @@ static int pxa2xx_spi_map_dma_buffer(struct driver_data *drv_data,
 		int ret;
 
 		sg_free_table(sgt);
-		ret = sg_alloc_table(sgt, nents, GFP_KERNEL);
+		ret = sg_alloc_table(sgt, nents, GFP_ATOMIC);
 		if (ret)
 			return ret;
 	}