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| author | Feng Tang <feng.tang@intel.com> | 2012-09-28 15:22:01 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-10-21 09:17:09 -0700 |
| commit | 57600cd8d471a6a0a1f97ecdc838954fd202c28f (patch) | |
| tree | 1ea929f487293927c64927630574b36476d4b9f9 | |
| parent | e607831667a88ca3a545659adf0920415c52148f (diff) | |
| download | kernel_samsung_smdk4412-57600cd8d471a6a0a1f97ecdc838954fd202c28f.zip kernel_samsung_smdk4412-57600cd8d471a6a0a1f97ecdc838954fd202c28f.tar.gz kernel_samsung_smdk4412-57600cd8d471a6a0a1f97ecdc838954fd202c28f.tar.bz2 | |
ACPI: EC: Add a quirk for CLEVO M720T/M730T laptop
commit 67bfa9b60bd689601554526d144b21d529f78a09 upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -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 05b3331..d2519b2 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -920,6 +920,17 @@ 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", { @@ -951,10 +962,13 @@ 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; |