From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751564AbcGVORi (ORCPT ); Fri, 22 Jul 2016 10:17:38 -0400 Received: from bhuna.collabora.co.uk ([46.235.227.227]:60183 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750810AbcGVORh (ORCPT ); Fri, 22 Jul 2016 10:17:37 -0400 From: robert.foss@collabora.com To: linux-kernel@vger.kernel.org, linux-mmc@vger.kernel.org, aisheng.dong@freescale.com, suneel.garapati@xilinx.com, wenkai.du@intel.com, johan.derycke@barco.com, ludovic.desroches@atmel.com, haibo.chen@freescale.com, ivan.ivanov@linaro.org, ulf.hansson@linaro.org Cc: enric.balletbo@collabora.com, tomeu.vizoso@collabora.com, Christopher Freeman Subject: [PATCH] mmc: sdhci: Do not allow tuning procedure to be interrupted Date: Fri, 22 Jul 2016 10:17:31 -0400 Message-Id: <1469197051-18733-1-git-send-email-robert.foss@collabora.com> X-Mailer: git-send-email 2.7.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Christopher Freeman wait_event_interruptible_timeout() will return early if the blocked process receives a signal, causing the driver to abort the tuning procedure and possibly leaving the controller in a bad state. Since the tuning command is expected to complete quickly (<50ms) and we've set a timeout, use wait_event_timeout() instead. Signed-off-by: Christopher Freeman --- drivers/mmc/host/sdhci.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index ef3eee7..2029090 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -2009,7 +2009,7 @@ static int sdhci_execute_tuning(struct mmc_host *mmc, u32 opcode) spin_unlock_irqrestore(&host->lock, flags); /* Wait for Buffer Read Ready interrupt */ - wait_event_interruptible_timeout(host->buf_ready_int, + wait_event_timeout(host->buf_ready_int, (host->tuning_done == 1), msecs_to_jiffies(50)); spin_lock_irqsave(&host->lock, flags); -- 2.7.4