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From: Jisheng Zhang <jszhang@marvell.com>
To: ulf.hansson@linaro.org, adrian.hunter@intel.com, arnd@arndb.de,
	ludovic.desroches@atmel.com, swarren@wwwdotorg.org,
	lee@kernel.org, eric@anholt.net, michal.simek@xilinx.com,
	soren.brinkmann@xilinx.com, srinivas.kandagatla@gmail.com,
	maxime.coquelin@st.com, patrice.chotard@st.com,
	thierry.reding@gmail.com, sebastian.hesselbarth@gmail.com,
	kernel@stlinux.com
Cc: linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-tegra@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-rpi-kernel@lists.infradead.org,
	Jisheng Zhang <jszhang@marvell.com>
Subject: [PATCH v5 05/13] mmc: sdhci-of-arasan: fix clk issue in sdhci_arasan_remove()
Date: Tue, 16 Feb 2016 21:08:23 +0800	[thread overview]
Message-ID: <1455628111-5583-6-git-send-email-jszhang@marvell.com> (raw)
In-Reply-To: <1455628111-5583-1-git-send-email-jszhang@marvell.com>

sdhci_pltfm_unregister() could operate host's registers, it will cause
problems if the clk is already disabled and unprepared. Fix this issue
by moving the clk_disable_unprepare() call to the end of remove
function.

Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Acked-by: Sören Brinkmann <soren.brinkmann@xilinx.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
---
 drivers/mmc/host/sdhci-of-arasan.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c
index 5d9fdb3..8b4f8f7 100644
--- a/drivers/mmc/host/sdhci-of-arasan.c
+++ b/drivers/mmc/host/sdhci-of-arasan.c
@@ -201,13 +201,16 @@ clk_dis_ahb:
 
 static int sdhci_arasan_remove(struct platform_device *pdev)
 {
+	int ret;
 	struct sdhci_host *host = platform_get_drvdata(pdev);
 	struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
 	struct sdhci_arasan_data *sdhci_arasan = pltfm_host->priv;
 
+	ret = sdhci_pltfm_unregister(pdev);
+
 	clk_disable_unprepare(sdhci_arasan->clk_ahb);
 
-	return sdhci_pltfm_unregister(pdev);
+	return ret;
 }
 
 static const struct of_device_id sdhci_arasan_of_match[] = {
-- 
2.7.0

  parent reply	other threads:[~2016-02-16 13:08 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-02-16 13:08 [PATCH v5 00/13] mmc: use sdhci_pltfm_init for private allocation and clean up Jisheng Zhang
2016-02-16 13:08 ` [PATCH v5 01/13] mmc: sdhci-bcm2835: use sdhci_pltfm_init for private allocation Jisheng Zhang
2016-02-16 18:10   ` Eric Anholt
2016-02-16 13:08 ` [PATCH v5 02/13] mmc: sdhci-esdhc-imx: " Jisheng Zhang
2016-02-16 13:08 ` [PATCH v5 03/13] mmc: sdhci-msm: factorise sdhci_msm_pdata outisde of sdhci_msm_host Jisheng Zhang
2016-02-16 13:08 ` [PATCH v5 04/13] mmc: sdhci-msm: use sdhci_pltfm_init for private allocation Jisheng Zhang
2016-02-16 13:08 ` Jisheng Zhang [this message]
2016-02-16 13:08 ` [PATCH v5 06/13] mmc: sdhci-of-arasan: " Jisheng Zhang
2016-02-16 13:08 ` [PATCH v5 07/13] mmc: sdhci-of-at91: " Jisheng Zhang
2016-02-16 13:08 ` [PATCH v5 08/13] mmc: sdhci-of-esdhc: " Jisheng Zhang
2016-02-16 13:08 ` [PATCH v5 09/13] mmc: sdhci-pxav3: " Jisheng Zhang
2016-02-16 13:08 ` [PATCH v5 10/13] mmc: sdhci-st: " Jisheng Zhang
2016-02-16 13:08 ` [PATCH v5 11/13] mmc: sdhci-tegra: " Jisheng Zhang
2016-02-16 13:08 ` [PATCH v5 12/13] mmc: sdhci-pxav2: remove unnecessary assignment of pltfm_host->priv Jisheng Zhang
2016-02-16 13:08 ` [PATCH v5 13/13] mmc: sdhci-pltfm: remove priv variable from sdhci_pltfm_host Jisheng Zhang
     [not found] ` <1455628111-5583-1-git-send-email-jszhang-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>
2016-02-18 12:40   ` [PATCH v5 00/13] mmc: use sdhci_pltfm_init for private allocation and clean up Ulf Hansson

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