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fb_get_fscreeninfo(): don't bother with do_fb_ioctl() 

it's easier to do the right thing directly

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2017-05-26 23:51:09 -04:00
parent bcfe8ad8ef
commit 9a46903792
1 changed files with 5 additions and 14 deletions
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19
drivers/video/fbdev/core/fbmem.c
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@ -1331,22 +1331,13 @@ static int do_fscreeninfo_to_user(struct fb_fix_screeninfo *fix,
static int fb_get_fscreeninfo(struct fb_info *info, unsigned int cmd,
unsigned long arg)
{
mm_segment_t old_fs;
struct fb_fix_screeninfo fix;
struct fb_fix_screeninfo32 __user *fix32;
int err;
fix32 = compat_ptr(arg);
old_fs = get_fs();
set_fs(KERNEL_DS);
err = do_fb_ioctl(info, cmd, (unsigned long) &fix);
set_fs(old_fs);
if (!err)
err = do_fscreeninfo_to_user(&fix, fix32);
return err;
if (!lock_fb_info(info))
return -ENODEV;
fix = info->fix;
unlock_fb_info(info);
return do_fscreeninfo_to_user(&fix, compat_ptr(arg));
}
static long fb_compat_ioctl(struct file *file, unsigned int cmd,