shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-06 10:58:48 +09:00
Code Issues Packages Projects Releases Wiki Activity

ACPI: x86: s2idle: Force AMD GUID/_REV 2 on HP Elitebook 865

Browse Source 
commit 3ea45390e9 upstream.

HP Elitebook 865 supports both the AMD GUID w/ _REV 2 and Microsoft
GUID with _REV 0. Both have very similar code but the AMD GUID
has a special workaround that is specific to a problem with
spurious wakeups on systems with Qualcomm WLAN.

This is believed to be a bug in the Qualcomm WLAN F/W (it doesn't
affect any other WLAN H/W). If this WLAN firmware is fixed this
quirk can be dropped.

Cc: stable@vger.kernel.org # 6.1
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mario Limonciello
2022-12-15 13:16:15 -06:00
committed by Greg Kroah-Hartman
parent 0478b94c6f
commit 577821f756
1 changed files with 20 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
drivers/acpi/x86/s2idle.c
View File

@@ -401,6 +401,13 @@ static const struct acpi_device_id amd_hid_ids[] = {
{}
};
static int lps0_prefer_amd(const struct dmi_system_id *id)
{
pr_debug("Using AMD GUID w/ _REV 2.\n");
rev_id = 2;
return 0;
}
static int lps0_prefer_microsoft(const struct dmi_system_id *id)
{
pr_debug("Preferring Microsoft GUID.\n");
@@ -462,6 +469,19 @@ static const struct dmi_system_id s2idle_dmi_table[] __initconst = {
DMI_MATCH(DMI_PRODUCT_NAME, "ROG Flow X16 GV601"),
},
},
{
/*
* AMD Rembrandt based HP EliteBook 835/845/865 G9
* Contains specialized AML in AMD/_REV 2 path to avoid
* triggering a bug in Qualcomm WLAN firmware. This may be
* removed in the future if that firmware is fixed.
*/
.callback = lps0_prefer_amd,
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "HP"),
DMI_MATCH(DMI_BOARD_NAME, "8990"),
},
},
{}
};