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path: root/drivers/acpi/video.c
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Diffstat (limited to 'drivers/acpi/video.c')
-rw-r--r--drivers/acpi/video.c47
1 files changed, 43 insertions, 4 deletions
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 032db459370f..26eb70c8f518 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -522,6 +522,33 @@ static struct dmi_system_id video_dmi_table[] __initdata = {
DMI_MATCH(DMI_PRODUCT_NAME, "370R4E/370R4V/370R5E/3570RE/370R5V"),
},
},
+ {
+ /* https://bugzilla.redhat.com/show_bug.cgi?id=1186097 */
+ .callback = video_disable_native_backlight,
+ .ident = "SAMSUNG 3570R/370R/470R/450R/510R/4450RV",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "3570R/370R/470R/450R/510R/4450RV"),
+ },
+ },
+ {
+ /* https://bugzilla.redhat.com/show_bug.cgi?id=1094948 */
+ .callback = video_disable_native_backlight,
+ .ident = "SAMSUNG 730U3E/740U3E",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "730U3E/740U3E"),
+ },
+ },
+ {
+ /* https://bugs.freedesktop.org/show_bug.cgi?id=87286 */
+ .callback = video_disable_native_backlight,
+ .ident = "SAMSUNG 900X3C/900X3D/900X3E/900X4C/900X4D",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "900X3C/900X3D/900X3E/900X4C/900X4D"),
+ },
+ },
{
/* https://bugzilla.redhat.com/show_bug.cgi?id=1163574 */
@@ -2083,7 +2110,8 @@ static int __init intel_opregion_present(void)
int acpi_video_register(void)
{
- int result = 0;
+ int ret;
+
if (register_count) {
/*
* if the function of acpi_video_register is already called,
@@ -2095,9 +2123,9 @@ int acpi_video_register(void)
mutex_init(&video_list_lock);
INIT_LIST_HEAD(&video_bus_head);
- result = acpi_bus_register_driver(&acpi_video_bus);
- if (result < 0)
- return -ENODEV;
+ ret = acpi_bus_register_driver(&acpi_video_bus);
+ if (ret)
+ return ret;
/*
* When the acpi_video_bus is loaded successfully, increase
@@ -2149,6 +2177,17 @@ EXPORT_SYMBOL(acpi_video_unregister_backlight);
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())