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drm/mgag200: fix null pointer dereference
[firefly-linux-kernel-4.4.55.git]
/
drivers
/
gpu
/
drm
/
mgag200
/
mgag200_drv.c
diff --git
a/drivers/gpu/drm/mgag200/mgag200_drv.c
b/drivers/gpu/drm/mgag200/mgag200_drv.c
index 93e832d6c3286346eff00f179fcc49e5caeba473..ea1024d79974a0f05b91c0e763ca6929266f5a72 100644
(file)
--- a/
drivers/gpu/drm/mgag200/mgag200_drv.c
+++ b/
drivers/gpu/drm/mgag200/mgag200_drv.c
@@
-47,6
+47,9
@@
static void mgag200_kick_out_firmware_fb(struct pci_dev *pdev)
bool primary = false;
ap = alloc_apertures(1);
+ if (!ap)
+ return;
+
ap->ranges[0].base = pci_resource_start(pdev, 0);
ap->ranges[0].size = pci_resource_len(pdev, 0);