[PATCH] staging: sm750fb: always take the lock

[AbdAllah-MEZITI]

This patch
- will always take the lock
- fix the sparse warning:
drivers/staging/sm750fb/sm750.c:159:13: warning: context imbalance in 
'lynxfb_ops_fillrect' - different lock contexts for basic block
drivers/staging/sm750fb/sm750.c:231:9: warning: context imbalance in 
'lynxfb_ops_copyarea' - different lock contexts for basic block
drivers/staging/sm750fb/sm750.c:235:13: warning: context imbalance in 
'lynxfb_ops_imageblit' - different lock contexts for basic block

Signed-off-by: AbdAllah MEZITI <abdallah.meziti....@gmail.com>
---
 drivers/staging/sm750fb/sm750.c | 18 ++++++------------
 1 file changed, 6 insertions(+), 12 deletions(-)

diff --git a/drivers/staging/sm750fb/sm750.c b/drivers/staging/sm750fb/sm750.c
index 386d4ad..4a22190 100644
--- a/drivers/staging/sm750fb/sm750.c
+++ b/drivers/staging/sm750fb/sm750.c
@@ -186,16 +186,14 @@ static void lynxfb_ops_fillrect(struct fb_info *info,
         * If not use spin_lock,system will die if user load driver
         * and immediately unload driver frequently (dual)
         */
-       if (sm750_dev->fb_count > 1)
-               spin_lock(&sm750_dev->slock);
+       spin_lock(&sm750_dev->slock);
 
        sm750_dev->accel.de_fillrect(&sm750_dev->accel,
                                     base, pitch, Bpp,
                                     region->dx, region->dy,
                                     region->width, region->height,
                                     color, rop);
-       if (sm750_dev->fb_count > 1)
-               spin_unlock(&sm750_dev->slock);
+       spin_unlock(&sm750_dev->slock);
 }
 
 static void lynxfb_ops_copyarea(struct fb_info *info,
@@ -220,16 +218,14 @@ static void lynxfb_ops_copyarea(struct fb_info *info,
         * If not use spin_lock, system will die if user load driver
         * and immediately unload driver frequently (dual)
         */
-       if (sm750_dev->fb_count > 1)
-               spin_lock(&sm750_dev->slock);
+       spin_lock(&sm750_dev->slock);
 
        sm750_dev->accel.de_copyarea(&sm750_dev->accel,
                                     base, pitch, region->sx, region->sy,
                                     base, pitch, Bpp, region->dx, region->dy,
                                     region->width, region->height,
                                     HW_ROP2_COPY);
-       if (sm750_dev->fb_count > 1)
-               spin_unlock(&sm750_dev->slock);
+       spin_unlock(&sm750_dev->slock);
 }
 
 static void lynxfb_ops_imageblit(struct fb_info *info,
@@ -269,8 +265,7 @@ static void lynxfb_ops_imageblit(struct fb_info *info,
         * If not use spin_lock, system will die if user load driver
         * and immediately unload driver frequently (dual)
         */
-       if (sm750_dev->fb_count > 1)
-               spin_lock(&sm750_dev->slock);
+       spin_lock(&sm750_dev->slock);
 
        sm750_dev->accel.de_imageblit(&sm750_dev->accel,
                                      image->data, image->width >> 3, 0,
@@ -278,8 +273,7 @@ static void lynxfb_ops_imageblit(struct fb_info *info,
                                      image->dx, image->dy,
                                      image->width, image->height,
                                      fgcol, bgcol, HW_ROP2_COPY);
-       if (sm750_dev->fb_count > 1)
-               spin_unlock(&sm750_dev->slock);
+       spin_unlock(&sm750_dev->slock);
 }
 
 static int lynxfb_ops_pan_display(struct fb_var_screeninfo *var,
-- 
2.7.4