From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:35496 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932932AbcJYS54 (ORCPT ); Tue, 25 Oct 2016 14:57:56 -0400 Subject: Patch "mmc: block: don't use CMD23 with very old MMC cards" has been added to the 4.7-stable tree To: dg@emlix.com, gregkh@linuxfoundation.org, ulf.hansson@linaro.org Cc: , From: Date: Tue, 25 Oct 2016 20:57:41 +0200 Message-ID: <1477421861184142@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled mmc: block: don't use CMD23 with very old MMC cards to the 4.7-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: mmc-block-don-t-use-cmd23-with-very-old-mmc-cards.patch and it can be found in the queue-4.7 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 0ed50abb2d8fc81570b53af25621dad560cd49b3 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Daniel=20Gl=C3=B6ckner?= Date: Tue, 30 Aug 2016 14:17:30 +0200 Subject: mmc: block: don't use CMD23 with very old MMC cards MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Daniel Glöckner commit 0ed50abb2d8fc81570b53af25621dad560cd49b3 upstream. CMD23 aka SET_BLOCK_COUNT was introduced with MMC v3.1. Older versions of the specification allowed to terminate multi-block transfers only with CMD12. The patch fixes the following problem: mmc0: new MMC card at address 0001 mmcblk0: mmc0:0001 SDMB-16 15.3 MiB mmcblk0: timed out sending SET_BLOCK_COUNT command, card status 0x400900 ... blk_update_request: I/O error, dev mmcblk0, sector 0 Buffer I/O error on dev mmcblk0, logical block 0, async page read mmcblk0: unable to read partition table Signed-off-by: Daniel Glöckner Signed-off-by: Ulf Hansson Signed-off-by: Greg Kroah-Hartman --- drivers/mmc/card/block.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/mmc/card/block.c +++ b/drivers/mmc/card/block.c @@ -2301,7 +2301,8 @@ again: set_capacity(md->disk, size); if (mmc_host_cmd23(card->host)) { - if (mmc_card_mmc(card) || + if ((mmc_card_mmc(card) && + card->csd.mmca_vsn >= CSD_SPEC_VER_3) || (mmc_card_sd(card) && card->scr.cmds & SD_SCR_CMD23_SUPPORT)) md->flags |= MMC_BLK_CMD23; Patches currently in stable-queue which might be from dg@emlix.com are queue-4.7/mmc-block-don-t-use-cmd23-with-very-old-mmc-cards.patch