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Commit 266530b3 authored by Jeffy Chen's avatar Jeffy Chen Committed by Linus Torvalds
Browse files

drm: Add missing field copy in compat_drm_version 



DRM_IOCTL_VERSION is supposed to update the name_len/date_len/desc_len
fields to user.

Fixes: 012c6741 ("switch compat_drm_version() to drm_ioctl_kernel()")
Signed-off-by: default avatarJeffy Chen <jeffy.chen@rock-chips.com>
Reviewed-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 4ca6df13

drivers/gpu/drm/drm_ioc32.c

+3 −0
Original line number Diff line number Diff line
@@ -112,6 +112,9 @@ static int compat_drm_version(struct file *file, unsigned int cmd, 
	v32.version_major = v.version_major;

	v32.version_minor = v.version_minor;

	v32.version_patchlevel = v.version_patchlevel;

	v32.name_len = v.name_len;

	v32.date_len = v.date_len;

	v32.desc_len = v.desc_len;

	if (copy_to_user((void __user *)arg, &v32, sizeof(v32)))

		return -EFAULT;

	return 0;