video: fbdev: controlfb.c: use container_of to resolve fb_info_control from fb_info

Use container_of instead of casting first structure member.

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

1 files changed, 10 insertions, 5 deletions

diff --git a/drivers/video/fbdev/controlfb.c b/drivers/video/fbdev/controlfb.c
index fdadef979238..080fdd2a70f3 100644
--- a/drivers/video/fbdev/controlfb.c
+++ b/drivers/video/fbdev/controlfb.c
@@ -218,7 +218,8 @@ static int controlfb_check_var (struct fb_var_screeninfo *var, struct fb_info *i
  */
 static int controlfb_set_par (struct fb_info *info)
 {
-        struct fb_info_control *p = (struct fb_info_control *) info;
+        struct fb_info_control *p =
+                container_of(info, struct fb_info_control, info);
         struct fb_par_control par;
         int err;
 
@@ -258,7 +259,8 @@ static int controlfb_pan_display(struct fb_var_screeninfo *var,
                                  struct fb_info *info)
 {
         unsigned int xoffset, hstep;
-        struct fb_info_control *p = (struct fb_info_control *)info;
+        struct fb_info_control *p =
+                container_of(info, struct fb_info_control, info);
         struct fb_par_control *par = &p->par;
 
         /*
@@ -309,7 +311,8 @@ static int controlfb_mmap(struct fb_info *info,
 
 static int controlfb_blank(int blank_mode, struct fb_info *info)
 {
-        struct fb_info_control *p = (struct fb_info_control *) info;
+        struct fb_info_control *p =
+                container_of(info, struct fb_info_control, info);
         unsigned ctrl;
 
         ctrl = ld_le32(CNTRL_REG(p,ctrl));
@@ -342,7 +345,8 @@ static int controlfb_blank(int blank_mode, struct fb_info *info)
 static int controlfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
                              u_int transp, struct fb_info *info)
 {
-        struct fb_info_control *p = (struct fb_info_control *) info;
+        struct fb_info_control *p =
+                container_of(info, struct fb_info_control, info);
         __u8 r, g, b;
 
         if (regno > 255)
@@ -833,7 +837,8 @@ static int control_var_to_par(struct fb_var_screeninfo *var,
         unsigned hperiod, hssync, hsblank, hesync, heblank, piped, heq, hlfln,
                  hserr, vperiod, vssync, vesync, veblank, vsblank, vswin, vewin;
         unsigned long pixclock;
-        struct fb_info_control *p = (struct fb_info_control *) fb_info;
+        struct fb_info_control *p =
+                container_of(fb_info, struct fb_info_control, info);
         struct control_regvals *r = &par->regvals;
 
         switch (var->bits_per_pixel) {