From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 651BB13A265; Mon, 23 Jun 2025 13:15:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750684545; cv=none; b=mbJnF+RdT47gaCiDVuawedFtFTFvooaJCo+4+8LSCYJc1AMzblqExQVLEtfnjS3x/806hQx/7ZEUBYabr4hgfnxloQfcg+lt37g8KQ65A5oK/JEHkvdxkxPr7axR0Eq8XKJkfFzRjcQHalgNWzc0HH2L90uTtSHXx7hzRvZ4tj4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750684545; c=relaxed/simple; bh=+dj4ehNm7Yld4ezRQcXzEQYDvBNAk7MBwP9vxMfq9Vc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=VjaXHn3B643UC8Kq2WNYl4On7RbjcqalTnJ5+MRQAu5Kvryao33T8ADVEpiLzJaawoPmkyqVw3WVhPcGpW85Gcps7mmQIkSO6Mwl4RzIO/AEht+hYTYq9MjUYvBQ5g6VzN0OCz/8KiheQEb2KUHrsWYHI2G7ywxR1PWF6n5UBXg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=bVI6g3iX; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="bVI6g3iX" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C4878C4CEEA; Mon, 23 Jun 2025 13:15:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1750684545; bh=+dj4ehNm7Yld4ezRQcXzEQYDvBNAk7MBwP9vxMfq9Vc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bVI6g3iXcS2/paJ8eB+s6ciaG+PkcF/XD/tkKkWSuPD/Oc54TIhfbQHeQnW7TUqf9 SzXL2RWZucH1fth0u/mk/8IqMas+5PQNmiWRr7Al3kI9zJCG0bWZKgBlkvZM8GtJW5 Q9u03XyStuQ7m7AHY/cVr4as6J4IfwnCWRNWZGy8= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Tasos Sahanidis , Niklas Cassel Subject: [PATCH 6.15 107/592] ata: pata_via: Force PIO for ATAPI devices on VT6415/VT6330 Date: Mon, 23 Jun 2025 15:01:05 +0200 Message-ID: <20250623130702.823752780@linuxfoundation.org> X-Mailer: git-send-email 2.50.0 In-Reply-To: <20250623130700.210182694@linuxfoundation.org> References: <20250623130700.210182694@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Tasos Sahanidis commit d29fc02caad7f94b62d56ee1b01c954f9c961ba7 upstream. The controller has a hardware bug that can hard hang the system when doing ATAPI DMAs without any trace of what happened. Depending on the device attached, it can also prevent the system from booting. In this case, the system hangs when reading the ATIP from optical media with cdrecord -vvv -atip on an _NEC DVD_RW ND-4571A 1-01 and an Optiarc DVD RW AD-7200A 1.06 attached to an ASRock 990FX Extreme 4, running at UDMA/33. The issue can be reproduced by running the same command with a cygwin build of cdrecord on WinXP, although it requires more attempts to cause it. The hang in that case is also resolved by forcing PIO. It doesn't appear that VIA has produced any drivers for that OS, thus no known workaround exists. HDDs attached to the controller do not suffer from any DMA issues. Cc: stable@vger.kernel.org Link: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/916677 Signed-off-by: Tasos Sahanidis Link: https://lore.kernel.org/r/20250519085508.1398701-1-tasos@tasossah.com Signed-off-by: Niklas Cassel Signed-off-by: Greg Kroah-Hartman --- drivers/ata/pata_via.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/ata/pata_via.c +++ b/drivers/ata/pata_via.c @@ -368,7 +368,8 @@ static unsigned int via_mode_filter(stru } if (dev->class == ATA_DEV_ATAPI && - dmi_check_system(no_atapi_dma_dmi_table)) { + (dmi_check_system(no_atapi_dma_dmi_table) || + config->id == PCI_DEVICE_ID_VIA_6415)) { ata_dev_warn(dev, "controller locks up on ATAPI DMA, forcing PIO\n"); mask &= ATA_MASK_PIO; }