From mboxrd@z Thu Jan 1 00:00:00 1970 From: Feng Tang Subject: [PATCH 2/2] ACPI: EC: Add a quirk for CLEVO M720T/M730T laptop Date: Fri, 28 Sep 2012 15:22:01 +0800 Message-ID: <1348816921-2637-2-git-send-email-feng.tang@intel.com> References: <1348816921-2637-1-git-send-email-feng.tang@intel.com> Return-path: Received: from mga09.intel.com ([134.134.136.24]:16437 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752777Ab2I1H2l (ORCPT ); Fri, 28 Sep 2012 03:28:41 -0400 In-Reply-To: <1348816921-2637-1-git-send-email-feng.tang@intel.com> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Len Brown , Len Brown , linux-acpi@vger.kernel.org Cc: Bob Moore , Francesco , Feng Tang By enlarging the GPE storm threshold back to 20, that laptop's EC works fine with interrupt mode instead of polling mode. This solves the bug https://bugzilla.kernel.org/show_bug.cgi?id=45151 Reported-and-Tested-by: Francesco Signed-off-by: Feng Tang --- 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 615264c..a51df96 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; -- 1.7.1