rk screen: add the judgement if the variable rk_screen is null pointer
authorzwl <zwl@rock-chips.com>
Fri, 4 Jul 2014 01:29:04 +0000 (09:29 +0800)
committerzwl <zwl@rock-chips.com>
Fri, 4 Jul 2014 01:29:04 +0000 (09:29 +0800)
commit0e6a39bfec201f5bad0b762c232daefc69bb248a
tree9ce0f6bcf6dec5ba6f975d24671934bc22c4468d
parentd35a4f57fe42d000ed032002f0e814bda60ba5d6
rk screen: add the judgement if the variable rk_screen is null pointer
drivers/video/rockchip/screen/rk_screen.c