From: Dave Airlie <airlied@redhat.com>
Date: Fri, 20 Jun 2008 02:03:41 +0000 (+1000)
Subject: drm: fix the ioctl to not believe userspace.
X-Git-Tag: submit/1.0/20121108.012404~812
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8712f0a17bb135d4ad3eb85b30f47c561cf9c148;p=profile%2Fivi%2Flibdrm.git

drm: fix the ioctl to not believe userspace.

believing userspace causes oopses
---

diff --git a/linux-core/drm_drv.c b/linux-core/drm_drv.c
index 609fc83..b375fa1 100644
--- a/linux-core/drm_drv.c
+++ b/linux-core/drm_drv.c
@@ -631,6 +631,8 @@ long drm_unlocked_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 		goto err_i1;
 	}
 #endif
+	cmd = ioctl->cmd;
+
 	func = ioctl->func;
 	/* is there a local override? */
 	if ((nr == DRM_IOCTL_NR(DRM_IOCTL_DMA)) && dev->driver->dma_ioctl)