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| author | Zhang Rui <rui.zhang@intel.com> | 2012-12-04 23:30:19 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2012-12-04 23:30:19 +0100 |
| commit | 129ff8f8d58297b04f47b5d6fad81aa2d08404e1 (patch) | |
| tree | 464e9e2edc3c6cbe55d8664241a896cbc01158e2 /drivers/acpi/video.c | |
| parent | b7e383046c2c7c13ad928cd7407eafff758ddd4b (diff) | |
| download | linux-129ff8f8d58297b04f47b5d6fad81aa2d08404e1.tar.gz linux-129ff8f8d58297b04f47b5d6fad81aa2d08404e1.tar.bz2 linux-129ff8f8d58297b04f47b5d6fad81aa2d08404e1.zip | |
ACPI / video: ignore BIOS initial backlight value for HP Folio 13-2000
Or else the laptop will boot with a dimmed screen.
References: https://bugzilla.kernel.org/show_bug.cgi?id=51141
Tested-by: Stefan Nagy <public@stefan-nagy.at>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/acpi/video.c')
| -rw-r--r-- | drivers/acpi/video.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index 0230cb6cbb3a..ac9a69cd45f5 100644 --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -389,6 +389,12 @@ static int __init video_set_bqc_offset(const struct dmi_system_id *d) return 0; } +static int video_ignore_initial_backlight(const struct dmi_system_id *d) +{ + use_bios_initial_backlight = 0; + return 0; +} + static struct dmi_system_id video_dmi_table[] __initdata = { /* * Broken _BQC workaround http://bugzilla.kernel.org/show_bug.cgi?id=13121 @@ -433,6 +439,14 @@ static struct dmi_system_id video_dmi_table[] __initdata = { DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 7720"), }, }, + { + .callback = video_ignore_initial_backlight, + .ident = "HP Folio 13-2000", + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), + DMI_MATCH(DMI_PRODUCT_NAME, "HP Folio 13 - 2000 Notebook PC"), + }, + }, {} }; |