diff options
Diffstat (limited to 'drivers/video/fbdev/cobalt_lcdfb.c')
| -rw-r--r-- | drivers/video/fbdev/cobalt_lcdfb.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/video/fbdev/cobalt_lcdfb.c b/drivers/video/fbdev/cobalt_lcdfb.c index feeace079425..3d59a01ec677 100644 --- a/drivers/video/fbdev/cobalt_lcdfb.c +++ b/drivers/video/fbdev/cobalt_lcdfb.c @@ -129,6 +129,9 @@ static ssize_t cobalt_lcdfb_read(struct fb_info *info, char __user *buf, unsigned long pos; int len, retval = 0; + if (!info->screen_base) + return -ENODEV; + pos = *ppos; if (pos >= LCD_CHARS_MAX || count == 0) return 0; @@ -175,6 +178,9 @@ static ssize_t cobalt_lcdfb_write(struct fb_info *info, const char __user *buf, unsigned long pos; int len, retval = 0; + if (!info->screen_base) + return -ENODEV; + pos = *ppos; if (pos >= LCD_CHARS_MAX || count == 0) return 0; |