[PATCH] drm/mxsfb: Remove unnecessary NULL check before clk_prepare_enable/clk_disable_unprepare

[Chen Ni]

clk_prepare_enable() and clk_disable_unprepare() already checked
NULL clock parameter.Remove unneeded NULL check for clk here.

Signed-off-by: Chen Ni <nic...@iscas.ac.cn>
---
 drivers/gpu/drm/mxsfb/mxsfb_kms.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/mxsfb/mxsfb_kms.c 
b/drivers/gpu/drm/mxsfb/mxsfb_kms.c
index 7ed2516b6de0..6072de530706 100644
--- a/drivers/gpu/drm/mxsfb/mxsfb_kms.c
+++ b/drivers/gpu/drm/mxsfb/mxsfb_kms.c
@@ -152,8 +152,7 @@ static void mxsfb_enable_controller(struct 
mxsfb_drm_private *mxsfb)
 {
        u32 reg;
 
-       if (mxsfb->clk_disp_axi)
-               clk_prepare_enable(mxsfb->clk_disp_axi);
+       clk_prepare_enable(mxsfb->clk_disp_axi);
        clk_prepare_enable(mxsfb->clk);
 
        /* Increase number of outstanding requests on all supported IPs */
@@ -222,8 +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);
 }
 
 /*
-- 
2.25.1