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| author | Hans de Goede <hdegoede@redhat.com> | 2019-12-17 20:08:11 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-02-14 16:32:09 -0500 |
| commit | bfd90b0b3732843cbd9fc92f58cbe61333754da6 (patch) | |
| tree | ba6b8dc7a2e4b96b7d31581b2cb660e618386c8d | |
| parent | 3760557c3a9bc43bbd782052c81d6aebe5d7317f (diff) | |
| download | linux-rt-bfd90b0b3732843cbd9fc92f58cbe61333754da6.tar.gz | |
ACPI: video: Do not export a non working backlight interface on MSI MS-7721 boards
commit d21a91629f4b8e794fc4c0e0c17c85cedf1d806c upstream.
Despite our heuristics to not wrongly export a non working ACPI backlight
interface on desktop machines, we still end up exporting one on desktops
using a motherboard from the MSI MS-7721 series.
I've looked at improving the heuristics, but in this case a quirk seems
to be the only way to solve this.
While at it also add a comment to separate the video_detect_force_none
entries in the video_detect_dmi_table from other type of entries, as we
already do for the other entry types.
Cc: All applicable <stable@vger.kernel.org>
BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1783786
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/acpi/video_detect.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c index 43587ac680e4..214c4e2e8ade 100644 --- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -328,6 +328,11 @@ static const struct dmi_system_id video_detect_dmi_table[] = { DMI_MATCH(DMI_PRODUCT_NAME, "Precision 7510"), }, }, + + /* + * Desktops which falsely report a backlight and which our heuristics + * for this do not catch. + */ { .callback = video_detect_force_none, .ident = "Dell OptiPlex 9020M", @@ -336,6 +341,14 @@ static const struct dmi_system_id video_detect_dmi_table[] = { DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 9020M"), }, }, + { + .callback = video_detect_force_none, + .ident = "MSI MS-7721", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "MSI"), + DMI_MATCH(DMI_PRODUCT_NAME, "MS-7721"), + }, + }, { }, }; |