From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751978Ab3ATLaO (ORCPT ); Sun, 20 Jan 2013 06:30:14 -0500 Received: from 212.199.104.198.static.012.net.il ([212.199.104.198]:54406 "EHLO lx-merez.qi.qualcomm.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751809Ab3ATLaM (ORCPT ); Sun, 20 Jan 2013 06:30:12 -0500 From: Maya Erez To: linux-mmc@vger.kernel.org Cc: linux-arm-msm@vger.kernel.org, Maya Erez , linux-kernel@vger.kernel.org (open list) Subject: [PATCH v1] mmc: core: move the cache disabling operation to mmc_suspend Date: Sun, 20 Jan 2013 13:29:16 +0200 Message-Id: <1358681368-13044-1-git-send-email-merez@codeaurora.org> X-Mailer: git-send-email 1.7.3.3 In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Cache control is an eMMC feature and in therefore should be part of MMC's bus resume operations, performed in mmc_suspend, rather than in the generic mmc_suspend_host(). Signed-off-by: Maya Erez diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index aaed768..b438bb2 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -2388,6 +2388,7 @@ EXPORT_SYMBOL(mmc_flush_cache); * Turn the cache ON/OFF. * Turning the cache OFF shall trigger flushing of the data * to the non-volatile storage. + * This function should be called with host claimed */ int mmc_cache_ctrl(struct mmc_host *host, u8 enable) { @@ -2399,7 +2400,6 @@ int mmc_cache_ctrl(struct mmc_host *host, u8 enable) mmc_card_is_removable(host)) return err; - mmc_claim_host(host); if (card && mmc_card_mmc(card) && (card->ext_csd.cache_size > 0)) { enable = !!enable; @@ -2417,7 +2417,6 @@ int mmc_cache_ctrl(struct mmc_host *host, u8 enable) card->ext_csd.cache_ctrl = enable; } } - mmc_release_host(host); return err; } @@ -2436,10 +2435,6 @@ int mmc_suspend_host(struct mmc_host *host) cancel_delayed_work(&host->detect); mmc_flush_scheduled_work(); - err = mmc_cache_ctrl(host, 0); - if (err) - goto out; - mmc_bus_get(host); if (host->bus_ops && !host->bus_dead) { if (host->bus_ops->suspend) { diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index e6e3911..dc17d40 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -1379,6 +1379,11 @@ static int mmc_suspend(struct mmc_host *host) BUG_ON(!host->card); mmc_claim_host(host); + + err = mmc_cache_ctrl(host, 0); + if (err) + goto out; + if (mmc_can_poweroff_notify(host->card)) err = mmc_poweroff_notify(host->card, EXT_CSD_POWER_OFF_SHORT); else if (mmc_card_can_sleep(host)) @@ -1386,8 +1391,9 @@ static int mmc_suspend(struct mmc_host *host) else if (!mmc_host_is_spi(host)) err = mmc_deselect_cards(host); host->card->state &= ~(MMC_STATE_HIGHSPEED | MMC_STATE_HIGHSPEED_200); - mmc_release_host(host); +out: + mmc_release_host(host); return err; } -- 1.7.3.3 -- QUALCOMM ISRAEL, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation