diff options
| author | Paul Mundt <lethal@linux-sh.org> | 2009-04-02 11:17:41 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2009-04-02 11:17:41 +0900 |
| commit | c4361bb64b81f5b81a7a08d58654493385a2f2b2 (patch) | |
| tree | 8741c0b60ddfbc3fc4e17c8d200f6aa6ff32cca0 /drivers/video/fbmem.c | |
| parent | 46368fa05164e1afdc1401294908cf30c6d8d981 (diff) | |
| parent | 833bb3046b6cb320e775ea2160ddca87d53260d5 (diff) | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'drivers/video/fbmem.c')
| -rw-r--r-- | drivers/video/fbmem.c | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c index cfd9dce1ce0..2ac32e6b595 100644 --- a/drivers/video/fbmem.c +++ b/drivers/video/fbmem.c @@ -46,6 +46,17 @@ struct fb_info *registered_fb[FB_MAX] __read_mostly; int num_registered_fb __read_mostly; +int lock_fb_info(struct fb_info *info) +{ + mutex_lock(&info->lock); + if (!info->fbops) { + mutex_unlock(&info->lock); + return 0; + } + return 1; +} +EXPORT_SYMBOL(lock_fb_info); + /* * Helpers */ @@ -1086,13 +1097,8 @@ static long do_fb_ioctl(struct fb_info *info, unsigned int cmd, return -EINVAL; con2fb.framebuffer = -1; event.data = &con2fb; - - if (!lock_fb_info(info)) - return -ENODEV; event.info = info; fb_notifier_call_chain(FB_EVENT_GET_CONSOLE_MAP, &event); - unlock_fb_info(info); - ret = copy_to_user(argp, &con2fb, sizeof(con2fb)) ? -EFAULT : 0; break; case FBIOPUT_CON2FBMAP: @@ -1109,12 +1115,8 @@ static long do_fb_ioctl(struct fb_info *info, unsigned int cmd, break; } event.data = &con2fb; - if (!lock_fb_info(info)) - return -ENODEV; event.info = info; - ret = fb_notifier_call_chain(FB_EVENT_SET_CONSOLE_MAP, - &event); - unlock_fb_info(info); + ret = fb_notifier_call_chain(FB_EVENT_SET_CONSOLE_MAP, &event); break; case FBIOBLANK: if (!lock_fb_info(info)) |