diff options
| author | Feng Tang <feng.tang@intel.com> | 2012-09-28 15:22:01 +0800 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2012-10-06 14:57:33 -0400 |
| commit | 67bfa9b60bd689601554526d144b21d529f78a09 (patch) | |
| tree | f3a149c295ebfd18469c019e3d39cbac3d252e8a /drivers/acpi/ec.c | |
| parent | a520d52e99b14ba7db135e916348f12f2a6e09be (diff) | |
| download | lwn-67bfa9b60bd689601554526d144b21d529f78a09.tar.gz lwn-67bfa9b60bd689601554526d144b21d529f78a09.zip | |
ACPI: EC: Add a quirk for CLEVO M720T/M730T laptop
By enlarging the GPE storm threshold back to 20, that laptop's
EC works fine with interrupt mode instead of polling mode.
https://bugzilla.kernel.org/show_bug.cgi?id=45151
Reported-and-Tested-by: Francesco <trentini@dei.unipd.it>
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/acpi/ec.c')
| -rw-r--r-- | drivers/acpi/ec.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index 615264c89c31..a51df9681319 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -930,6 +930,17 @@ static int ec_flag_msi(const struct dmi_system_id *id) return 0; } +/* + * Clevo M720 notebook actually works ok with IRQ mode, if we lifted + * the GPE storm threshold back to 20 + */ +static int ec_enlarge_storm_threshold(const struct dmi_system_id *id) +{ + pr_debug("Setting the EC GPE storm threshold to 20\n"); + ec_storm_threshold = 20; + return 0; +} + static struct dmi_system_id __initdata ec_dmi_table[] = { { ec_skip_dsdt_scan, "Compal JFL92", { @@ -961,10 +972,13 @@ static struct dmi_system_id __initdata ec_dmi_table[] = { { ec_validate_ecdt, "ASUS hardware", { DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer Inc.") }, NULL}, + { + ec_enlarge_storm_threshold, "CLEVO hardware", { + DMI_MATCH(DMI_SYS_VENDOR, "CLEVO Co."), + DMI_MATCH(DMI_PRODUCT_NAME, "M720T/M730T"),}, NULL}, {}, }; - int __init acpi_ec_ecdt_probe(void) { acpi_status status; |