From: Tommi Rantala <tt.rantala@gmail.com>
Date: Fri, 9 Nov 2012 09:19:36 +0000 (+0000)
Subject: drm/mgag200: check alloc_apertures() success in mga_vram_init()
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=0a7fdc59fba559dfbce14963b32102125c49cb10;p=linux-beck.git

drm/mgag200: check alloc_apertures() success in mga_vram_init()

Check for alloc_apertures() memory allocation failure, and propagate an
error code in case the allocation failed.

Signed-off-by: Tommi Rantala <tt.rantala@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
---

diff --git a/drivers/gpu/drm/mgag200/mgag200_main.c b/drivers/gpu/drm/mgag200/mgag200_main.c
index d6a1aae33701..07d4b24d4fff 100644
--- a/drivers/gpu/drm/mgag200/mgag200_main.c
+++ b/drivers/gpu/drm/mgag200/mgag200_main.c
@@ -133,6 +133,8 @@ static int mga_vram_init(struct mga_device *mdev)
 {
 	void __iomem *mem;
 	struct apertures_struct *aper = alloc_apertures(1);
+	if (!aper)
+		return -ENOMEM;
 
 	/* BAR 0 is VRAM */
 	mdev->mc.vram_base = pci_resource_start(mdev->dev->pdev, 0);