ACPI: video: Do not export a non working backlight interface on MSI MS-7721 boards
commit d21a91629f
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>
5.4-rM2-2.2.x-imx-squashed
parent
44f6e43924
commit
832d6f76f2
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@ -336,6 +336,11 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
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DMI_MATCH(DMI_PRODUCT_NAME, "Precision 7510"),
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},
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},
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/*
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* Desktops which falsely report a backlight and which our heuristics
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* for this do not catch.
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*/
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{
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.callback = video_detect_force_none,
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.ident = "Dell OptiPlex 9020M",
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@ -344,6 +349,14 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
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DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 9020M"),
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},
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},
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{
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.callback = video_detect_force_none,
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.ident = "MSI MS-7721",
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "MSI"),
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DMI_MATCH(DMI_PRODUCT_NAME, "MS-7721"),
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},
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},
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{ },
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};
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