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authorAlex Shi <alex.shi@linaro.org>2015-03-19 08:57:04 +0800
committerAlex Shi <alex.shi@linaro.org>2015-03-19 08:57:04 +0800
commitba0bfedf4c9cad58f56a7038d1462ffc21cd33df (patch)
treebc5582403ad15b835d1b69b2ab81bda44292f3e3 /drivers/acpi/video.c
parent43e7406efd7822d75c64310461d2cbca0ece19f0 (diff)
parent7f4e64246049cef5ae1eca37eec1701a9477799e (diff)
Merge tag 'v3.10.72' into linux-linaro-lsklsk-v3.10-15.03
This is the 3.10.72 stable release
Diffstat (limited to 'drivers/acpi/video.c')
-rw-r--r--drivers/acpi/video.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 82a01cc45f9c..0dc9ff61d7c2 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -1953,6 +1953,17 @@ EXPORT_SYMBOL(acpi_video_unregister);
static int __init acpi_video_init(void)
{
+ /*
+ * Let the module load even if ACPI is disabled (e.g. due to
+ * a broken BIOS) so that i915.ko can still be loaded on such
+ * old systems without an AcpiOpRegion.
+ *
+ * acpi_video_register() will report -ENODEV later as well due
+ * to acpi_disabled when i915.ko tries to register itself afterwards.
+ */
+ if (acpi_disabled)
+ return 0;
+
dmi_check_system(video_dmi_table);
if (intel_opregion_present())