From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id EC88FC4167D for ; Mon, 7 Mar 2022 10:01:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239278AbiCGJ6i (ORCPT ); Mon, 7 Mar 2022 04:58:38 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58386 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239930AbiCGJkY (ORCPT ); Mon, 7 Mar 2022 04:40:24 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CC7EC75C18; Mon, 7 Mar 2022 01:36:42 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 6DA1CB810BD; Mon, 7 Mar 2022 09:36:42 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id CC41EC340F3; Mon, 7 Mar 2022 09:36:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1646645801; bh=4nV0Rt1hVSFqqgPnAUQQsOzvV1i7xstj0KiqKOkxUws=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZnoGJU+4hIiQTErbqokR29qtOlO58B23QLZFnOTTZHtK7UqALkLRqv/EH9f88KZPZ 2y+fOVkMkmoX27M1oQSvSHVRUdOo9Qb4p/vy0GZWQtR33pwFUAct58JyqPd+AH9mw2 4Uctk1dVjJ5DOp4C248zfTgjugv4yBGQM4ESkAD4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Sergey Shtylyov , Damien Le Moal , Sasha Levin Subject: [PATCH 5.15 039/262] ata: pata_hpt37x: fix PCI clock detection Date: Mon, 7 Mar 2022 10:16:23 +0100 Message-Id: <20220307091703.628670051@linuxfoundation.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220307091702.378509770@linuxfoundation.org> References: <20220307091702.378509770@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Sergey Shtylyov [ Upstream commit 5f6b0f2d037c8864f20ff15311c695f65eb09db5 ] The f_CNT register (at the PCI config. address 0x78) is 16-bit, not 8-bit! The bug was there from the very start... :-( Signed-off-by: Sergey Shtylyov Fixes: 669a5db411d8 ("[libata] Add a bunch of PATA drivers.") Cc: stable@vger.kernel.org Signed-off-by: Damien Le Moal Signed-off-by: Sasha Levin --- drivers/ata/pata_hpt37x.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/ata/pata_hpt37x.c b/drivers/ata/pata_hpt37x.c index ae8375e9d2681..9d371859e81ed 100644 --- a/drivers/ata/pata_hpt37x.c +++ b/drivers/ata/pata_hpt37x.c @@ -964,14 +964,14 @@ static int hpt37x_init_one(struct pci_dev *dev, const struct pci_device_id *id) if ((freq >> 12) != 0xABCDE) { int i; - u8 sr; + u16 sr; u32 total = 0; pr_warn("BIOS has not set timing clocks\n"); /* This is the process the HPT371 BIOS is reported to use */ for (i = 0; i < 128; i++) { - pci_read_config_byte(dev, 0x78, &sr); + pci_read_config_word(dev, 0x78, &sr); total += sr & 0x1FF; udelay(15); } -- 2.34.1