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-rw-r--r--drivers/acpi/video.c20
1 files changed, 15 insertions, 5 deletions
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 66e8f7333e9b..609262dc1258 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -1743,10 +1743,18 @@ static int acpi_video_bus_remove(struct acpi_device *device, int type)
return 0;
}
+static int __init is_i740(struct pci_dev *dev)
+{
+ if (dev->device == 0x00D1)
+ return 1;
+ if (dev->device == 0x7000)
+ return 1;
+ return 0;
+}
+
static int __init intel_opregion_present(void)
{
- int i915 = 0;
-#if defined(CONFIG_DRM_I915) || defined(CONFIG_DRM_I915_MODULE)
+ int opregion = 0;
struct pci_dev *dev = NULL;
u32 address;
@@ -1755,13 +1763,15 @@ static int __init intel_opregion_present(void)
continue;
if (dev->vendor != PCI_VENDOR_ID_INTEL)
continue;
+ /* We don't want to poke around undefined i740 registers */
+ if (is_i740(dev))
+ continue;
pci_read_config_dword(dev, 0xfc, &address);
if (!address)
continue;
- i915 = 1;
+ opregion = 1;
}
-#endif
- return i915;
+ return opregion;
}
int acpi_video_register(void)