fbdev: add mutex for fb_mmap locking

[safe/jmp/linux-2.6] / drivers / video / i810 / i810_main.c

diff --git a/drivers/video/i810/i810_main.c b/drivers/video/i810/i810_main.c
index 2e94019..7196067 100644 (file)
--- a/drivers/video/i810/i810_main.c
+++ b/drivers/video/i810/i810_main.c
@@ -1090,8 +1090,10 @@ static int encode_fix(struct fb_fix_screeninfo *fix, struct fb_info *info)
        memset(fix, 0, sizeof(struct fb_fix_screeninfo));
 
        strcpy(fix->id, "I810");
+       mutex_lock(&info->mm_lock);
        fix->smem_start = par->fb.physical;
        fix->smem_len = par->fb.size;
+       mutex_unlock(&info->mm_lock);
        fix->type = FB_TYPE_PACKED_PIXELS;
        fix->type_aux = 0;
        fix->xpanstep = 8;