UPSTREAM: spi: rockchip: check return value of dmaengine_prep_slave_sg
authorShawn Lin <shawn.lin@rock-chips.com>
Wed, 9 Mar 2016 08:11:15 +0000 (16:11 +0800)
committerHuang, Tao <huangtao@rock-chips.com>
Thu, 16 Jun 2016 12:46:30 +0000 (20:46 +0800)
commitd6c1d4eadd00e7ab0b626244655d181cfe37c4bc
tree5665abcea4e1de565043a31be6e083554750a8be
parent9c66d0fd42c8c4169ef80f1c49c3e8215232d682
UPSTREAM: spi: rockchip: check return value of dmaengine_prep_slave_sg

We should check return value of dmaengine_prep_slave_sg, otherwise
we take risk of null pointer.

Change-Id: I2cc468563d630169f314e353d835ad33091c0d3c
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
(cherry picked from git.kernel.org next/linux-next.git master
 commit ea98491133439773b69345eb9a314fc5f15e07a4)
drivers/spi/spi-rockchip.c