From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932368AbcE0Dk5 (ORCPT ); Thu, 26 May 2016 23:40:57 -0400 Received: from mga14.intel.com ([192.55.52.115]:61298 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932194AbcE0Dk4 (ORCPT ); Thu, 26 May 2016 23:40:56 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.26,371,1459839600"; d="scan'208";a="815808599" From: Lv Zheng To: "Rafael J. Wysocki" , "Rafael J. Wysocki" , Len Brown Cc: Lv Zheng , Lv Zheng , , linux-acpi@vger.kernel.org Subject: [PATCH] ACPICA / hardware: Fix address check in acpi_hw_get_access_bit_width() Date: Fri, 27 May 2016 11:40:50 +0800 Message-Id: <1464320450-5175-1-git-send-email-lv.zheng@intel.com> X-Mailer: git-send-email 1.7.10 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The address check in acpi_hw_get_access_bit_width() should be byte size based, not bit width based. This patch fixes this mistake. Reported-by: Boris Ostrovsky Suggested-by: Jan Beulich Signed-off-by: Lv Zheng --- drivers/acpi/acpica/hwregs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/acpi/acpica/hwregs.c b/drivers/acpi/acpica/hwregs.c index 0f18dbc..74a591b 100644 --- a/drivers/acpi/acpica/hwregs.c +++ b/drivers/acpi/acpica/hwregs.c @@ -95,7 +95,7 @@ acpi_hw_get_access_bit_width(struct acpi_generic_address *reg, u8 max_bit_width) if (!reg->bit_offset && reg->bit_width && ACPI_IS_POWER_OF_TWO(reg->bit_width) && ACPI_IS_ALIGNED(reg->bit_width, 8) && - ACPI_IS_ALIGNED(address, reg->bit_width)) { + ACPI_IS_ALIGNED(address, reg->bit_width >> 3)) { return (reg->bit_width); } else { if (reg->space_id == ACPI_ADR_SPACE_SYSTEM_IO) { -- 1.7.10