diff options
| author | Len Brown <len.brown@intel.com> | 2009-04-05 10:14:15 +0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2009-04-05 10:14:15 +0400 |
| commit | 478c6a43fcbc6c11609f8cee7c7b57223907754f (patch) | |
| tree | a7f7952099da60d33032aed6de9c0c56c9f8779e /drivers/video/fbmem.c | |
| parent | 8a3f257c704e02aee9869decd069a806b45be3f1 (diff) | |
| parent | 6bb597507f9839b13498781e481f5458aea33620 (diff) | |
| download | linux-478c6a43fcbc6c11609f8cee7c7b57223907754f.tar.xz | |
Merge branch 'linus' into release
Conflicts:
arch/x86/kernel/cpu/cpufreq/longhaul.c
Signed-off-by: Len Brown <len.brown@intel.com>
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 cfd9dce1ce0b..2ac32e6b5953 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)) |