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 X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C597DC43332 for ; Thu, 19 Mar 2020 13:26:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 96F10208D6 for ; Thu, 19 Mar 2020 13:26:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1584624371; bh=pedXLTfJpQVGrJP7cjM0hvFmyCL6sf5H6VR6PRA7Ru4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=i013EG/7l1DXYKSkiu0tsknBPCPoyU49vYyQIvQK2+yN1kLWbmjwGF1d8WgeTOOPT JZKd/YufwgDsJSK5gDWTeFMOnPbnNgTeXnMx0EZsAQbqlqJvjvDRXuGBG7YCzod0d1 s8SwsACt7rnOM/JqJ5Q5aDvu4T6N9tos+fWPKBfc= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730750AbgCSN0K (ORCPT ); Thu, 19 Mar 2020 09:26:10 -0400 Received: from mail.kernel.org ([198.145.29.99]:53952 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730738AbgCSN0F (ORCPT ); Thu, 19 Mar 2020 09:26:05 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id B1A4C20CC7; Thu, 19 Mar 2020 13:26:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1584624365; bh=pedXLTfJpQVGrJP7cjM0hvFmyCL6sf5H6VR6PRA7Ru4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mFXmW0vrkNQknJrum9j/+ZG88wQ8RErHW6y9V1Y8ddJzyj4eJIIr+aW53/r/xNapU lqxH7EcNvOlI8hG/LiGXZWL54xsPN423WmjZ2gPFcPq3Swoq84Vhf4J6iRM1z0eQRL 83RMssfWjosq/BormVF3LhEwJWTTvkDQZxuM3+Sc= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Sowjanya Komatineni , Anders Roxell , Faiz Abbas , Peter Geis , Ulf Hansson , Sasha Levin Subject: [PATCH 5.5 08/65] mmc: core: Respect MMC_CAP_NEED_RSP_BUSY for erase/trim/discard Date: Thu, 19 Mar 2020 14:03:50 +0100 Message-Id: <20200319123928.860588815@linuxfoundation.org> X-Mailer: git-send-email 2.25.2 In-Reply-To: <20200319123926.466988514@linuxfoundation.org> References: <20200319123926.466988514@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Ulf Hansson [ Upstream commit 43cc64e5221cc6741252b64bc4531dd1eefb733d ] The busy timeout that is computed for each erase/trim/discard operation, can become quite long and may thus exceed the host->max_busy_timeout. If that becomes the case, mmc_do_erase() converts from using an R1B response to an R1 response, as to prevent the host from doing HW busy detection. However, it has turned out that some hosts requires an R1B response no matter what, so let's respect that via checking MMC_CAP_NEED_RSP_BUSY. Note that, if the R1B gets enforced, the host becomes fully responsible of managing the needed busy timeout, in one way or the other. Suggested-by: Sowjanya Komatineni Cc: Tested-by: Anders Roxell Tested-by: Sowjanya Komatineni Tested-by: Faiz Abbas Tested-By: Peter Geis Signed-off-by: Ulf Hansson Signed-off-by: Sasha Levin --- drivers/mmc/core/core.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index abf8f5eb0a1c8..26644b7ec13e3 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -1732,8 +1732,11 @@ static int mmc_do_erase(struct mmc_card *card, unsigned int from, * the erase operation does not exceed the max_busy_timeout, we should * use R1B response. Or we need to prevent the host from doing hw busy * detection, which is done by converting to a R1 response instead. + * Note, some hosts requires R1B, which also means they are on their own + * when it comes to deal with the busy timeout. */ - if (card->host->max_busy_timeout && + if (!(card->host->caps & MMC_CAP_NEED_RSP_BUSY) && + card->host->max_busy_timeout && busy_timeout > card->host->max_busy_timeout) { cmd.flags = MMC_RSP_SPI_R1 | MMC_RSP_R1 | MMC_CMD_AC; } else { -- 2.20.1