diff options
| -rw-r--r-- | drivers/acpi/x86/s2idle.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/drivers/acpi/x86/s2idle.c b/drivers/acpi/x86/s2idle.c index 2c5931d247a2..725d2a6c87ed 100644 --- a/drivers/acpi/x86/s2idle.c +++ b/drivers/acpi/x86/s2idle.c @@ -27,6 +27,10 @@ static bool sleep_no_lps0 __read_mostly; module_param(sleep_no_lps0, bool, 0644); MODULE_PARM_DESC(sleep_no_lps0, "Do not use the special LPS0 device interface"); +static bool prefer_microsoft_dsm_guid __read_mostly; +module_param(prefer_microsoft_dsm_guid, bool, 0644); +MODULE_PARM_DESC(prefer_microsoft_dsm_guid, "Prefer using Microsoft GUID in LPS0 device _DSM evaluation"); + static const struct acpi_device_id lps0_device_ids[] = { {"PNP0D80", }, {"", }, @@ -402,6 +406,9 @@ static int lps0_device_attach(struct acpi_device *adev, if (lps0_device_handle) return 0; + lps0_dsm_func_mask_microsoft = validate_dsm(adev->handle, + ACPI_LPS0_DSM_UUID_MICROSOFT, 0, + &lps0_dsm_guid_microsoft); if (acpi_s2idle_vendor_amd()) { static const struct acpi_device_id *dev_id; const struct amd_lps0_hid_device_data *data; @@ -416,16 +423,12 @@ static int lps0_device_attach(struct acpi_device *adev, rev_id = data->rev_id; lps0_dsm_func_mask = validate_dsm(adev->handle, ACPI_LPS0_DSM_UUID_AMD, rev_id, &lps0_dsm_guid); - lps0_dsm_func_mask_microsoft = validate_dsm(adev->handle, - ACPI_LPS0_DSM_UUID_MICROSOFT, 0, - &lps0_dsm_guid_microsoft); if (lps0_dsm_func_mask > 0x3 && data->check_off_by_one) { lps0_dsm_func_mask = (lps0_dsm_func_mask << 1) | 0x1; acpi_handle_debug(adev->handle, "_DSM UUID %s: Adjusted function mask: 0x%x\n", ACPI_LPS0_DSM_UUID_AMD, lps0_dsm_func_mask); } else if (lps0_dsm_func_mask_microsoft > 0 && data->prefer_amd_guid && - (!strcmp(hid, "AMDI0007") || - !strcmp(hid, "AMDI0008"))) { + !prefer_microsoft_dsm_guid) { lps0_dsm_func_mask_microsoft = -EINVAL; acpi_handle_debug(adev->handle, "_DSM Using AMD method\n"); } @@ -433,7 +436,8 @@ static int lps0_device_attach(struct acpi_device *adev, rev_id = 1; lps0_dsm_func_mask = validate_dsm(adev->handle, ACPI_LPS0_DSM_UUID, rev_id, &lps0_dsm_guid); - lps0_dsm_func_mask_microsoft = -EINVAL; + if (!prefer_microsoft_dsm_guid) + lps0_dsm_func_mask_microsoft = -EINVAL; } if (lps0_dsm_func_mask < 0 && lps0_dsm_func_mask_microsoft < 0) |