3.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Arvind Yadav <arvind.yadav...@gmail.com>


[ Upstream commit 4b0ea93f250afc6c1128e201b0a8a115ae613e47 ]

Here, pci_iomap can fail, handle this case and return -ENOMEM.

Signed-off-by: Arvind Yadav <arvind.yadav...@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vet...@ffwll.ch>
Link: 
http://patchwork.freedesktop.org/patch/msgid/1483443027-13444-1-git-send-email-arvind.yadav...@gmail.com
Signed-off-by: Sasha Levin <alexander.le...@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 drivers/gpu/drm/mgag200/mgag200_main.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/gpu/drm/mgag200/mgag200_main.c
+++ b/drivers/gpu/drm/mgag200/mgag200_main.c
@@ -138,6 +138,8 @@ static int mga_vram_init(struct mga_devi
        }
 
        mem = pci_iomap(mdev->dev->pdev, 0, 0);
+       if (!mem)
+               return -ENOMEM;
 
        mdev->mc.vram_size = mga_probe_vram(mdev, mem);
 


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