2 files changed, 15 insertions, 1 deletions

diff --git a/drivers/gpu/drm/gma500/mid_bios.c b/drivers/gpu/drm/gma500/mid_bios.c
index 128e6bb37568..55fee10eefff 100644
--- a/drivers/gpu/drm/gma500/mid_bios.c
+++ b/drivers/gpu/drm/gma500/mid_bios.c
@@ -45,6 +45,12 @@ static void mid_get_fuse_settings(struct drm_device *dev)
 #define FB_SKU_100 0
 #define FB_SKU_100L 1
 #define FB_SKU_83 2
+        if (pci_root == NULL) {
+                WARN_ON(1);
+                return;
+        }
+
+
         pci_write_config_dword(pci_root, 0xD0, FB_REG06);
         pci_read_config_dword(pci_root, 0xD4, &fuse_value);
 
@@ -101,6 +107,10 @@ static void mid_get_pci_revID(struct drm_psb_private *dev_priv)
         uint32_t platform_rev_id = 0;
         struct pci_dev *pci_gfx_root = pci_get_bus_and_slot(0, PCI_DEVFN(2, 0));
 
+        if (pci_gfx_root == NULL) {
+                WARN_ON(1);
+                return;
+        }
         pci_read_config_dword(pci_gfx_root, 0x08, &platform_rev_id);
         dev_priv->platform_rev_id = (uint8_t) platform_rev_id;
         pci_dev_put(pci_gfx_root);
@@ -138,6 +148,10 @@ static void mid_get_vbt_data(struct drm_psb_private *dev_priv)
 
         /* get the virtual address of the vbt */
         vbt_virtual = ioremap(addr, sizeof(*vbt));
+        if (vbt_virtual == NULL) {
+                vbt->size = 0;
+                return;
+        }
 
         memcpy(vbt, vbt_virtual, sizeof(*vbt));
         iounmap(vbt_virtual); /* Free virtual address space */
diff --git a/drivers/gpu/drm/gma500/psb_drv.c b/drivers/gpu/drm/gma500/psb_drv.c
index b4aee0ac2dfd..a2d881b894a3 100644
--- a/drivers/gpu/drm/gma500/psb_drv.c
+++ b/drivers/gpu/drm/gma500/psb_drv.c
@@ -52,7 +52,7 @@ module_param_named(trap_pagefaults, drm_psb_trap_pagefaults, int, 0600);
 static DEFINE_PCI_DEVICE_TABLE(pciidlist) = {
         { 0x8086, 0x8108, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &psb_chip_ops },
         { 0x8086, 0x8109, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &psb_chip_ops },
-#if defined(CONFIG_DRM_OAKTRAIL)
+#if defined(CONFIG_DRM_GMA600)
         { 0x8086, 0x4100, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops},
         { 0x8086, 0x4101, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops},
         { 0x8086, 0x4102, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops},