[v5,05/13] mmc: sdhci-of-arasan: fix clk issue in sdhci_arasan_remove()

Commit Message

Jisheng Zhang Feb. 16, 2016, 1:08 p.m. UTC

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 <[e-mail]>
Acked-by: Sören Brinkmann <[e-mail]>
Acked-by: Adrian Hunter <[e-mail]>
---
 drivers/mmc/host/sdhci-of-arasan.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

Patch

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[] = {