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authorFeng Tang <feng.tang@intel.com>2012-09-28 15:22:01 +0800
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-10-21 09:17:09 -0700
commit57600cd8d471a6a0a1f97ecdc838954fd202c28f (patch)
tree1ea929f487293927c64927630574b36476d4b9f9
parente607831667a88ca3a545659adf0920415c52148f (diff)
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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.c16
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;