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| author | Mario Limonciello <mario.limonciello@amd.com> | 2022-12-15 13:16:15 -0600 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2022-12-22 17:39:31 +0100 |
| commit | 3ea45390e9c0d35805ef8357ace55594fd4233d0 (patch) | |
| tree | f4f25bb9e924c7deac141adc6fdb25791b084a99 /drivers/acpi/x86 | |
| parent | 057b40f43ce429a02e793adf3cfbf2446a19a38e (diff) | |
| download | linux-3ea45390e9c0d35805ef8357ace55594fd4233d0.tar.gz linux-3ea45390e9c0d35805ef8357ace55594fd4233d0.tar.bz2 linux-3ea45390e9c0d35805ef8357ace55594fd4233d0.zip | |
ACPI: x86: s2idle: Force AMD GUID/_REV 2 on HP Elitebook 865
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>
Diffstat (limited to 'drivers/acpi/x86')
| -rw-r--r-- | drivers/acpi/x86/s2idle.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/acpi/x86/s2idle.c b/drivers/acpi/x86/s2idle.c index 5350c73564b6..422415cb14f4 100644 --- a/drivers/acpi/x86/s2idle.c +++ b/drivers/acpi/x86/s2idle.c @@ -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"), + }, + }, {} }; |