[PATCH] drm: mxsfb: remove unnecessary NULL check before clk_disable_unprepare()

[Guo Zhengkui]

NULL check has been done in clk_disable_unprepare() by IS_ERR_OR_NULL().
So remove NULL check before it.

Signed-off-by: Guo Zhengkui <guozheng...@vivo.com>
---
 drivers/gpu/drm/mxsfb/mxsfb_drv.c | 3 +--
 drivers/gpu/drm/mxsfb/mxsfb_kms.c | 3 +--
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/mxsfb/mxsfb_drv.c 
b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
index 55aad92e08ba..90f8d6bc0d21 100644
--- a/drivers/gpu/drm/mxsfb/mxsfb_drv.c
+++ b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
@@ -84,8 +84,7 @@ void mxsfb_enable_axi_clk(struct mxsfb_drm_private *mxsfb)
 
 void mxsfb_disable_axi_clk(struct mxsfb_drm_private *mxsfb)
 {
-       if (mxsfb->clk_axi)
-               clk_disable_unprepare(mxsfb->clk_axi);
+       clk_disable_unprepare(mxsfb->clk_axi);
 }
 
 static struct drm_framebuffer *
diff --git a/drivers/gpu/drm/mxsfb/mxsfb_kms.c 
b/drivers/gpu/drm/mxsfb/mxsfb_kms.c
index f021ab2c4520..ccd21ece21bf 100644
--- a/drivers/gpu/drm/mxsfb/mxsfb_kms.c
+++ b/drivers/gpu/drm/mxsfb/mxsfb_kms.c
@@ -221,8 +221,7 @@ static void mxsfb_disable_controller(struct 
mxsfb_drm_private *mxsfb)
        writel(reg, mxsfb->base + LCDC_VDCTRL4);
 
        clk_disable_unprepare(mxsfb->clk);
-       if (mxsfb->clk_disp_axi)
-               clk_disable_unprepare(mxsfb->clk_disp_axi);
+       clk_disable_unprepare(mxsfb->clk_disp_axi);
 }
 
 /*
-- 
2.20.1