mmc: sdhci-s3c: fix the card detection in runtime-pm

If host clock is disabled, host cannot detect a card in case of using
CD internal for detection.

Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
Signed-off-by: Chris Ball <cjb@laptop.org>

diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c
index a093e2e..a54dd5d 100644 (file)
--- a/drivers/mmc/host/sdhci-s3c.c
+++ b/drivers/mmc/host/sdhci-s3c.c
@@ -747,7 +747,8 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
                sdhci_s3c_setup_card_detect_gpio(sc);
 
 #ifdef CONFIG_PM_RUNTIME
-       clk_disable_unprepare(sc->clk_io);
+       if (pdata->cd_type != S3C_SDHCI_CD_INTERNAL)
+               clk_disable_unprepare(sc->clk_io);
 #endif
        return 0;
 
@@ -794,7 +795,8 @@ static int __devexit sdhci_s3c_remove(struct platform_device *pdev)
                gpio_free(sc->ext_cd_gpio);
 
 #ifdef CONFIG_PM_RUNTIME
-       clk_prepare_enable(sc->clk_io);
+       if (pdata->cd_type != S3C_SDHCI_CD_INTERNAL)
+               clk_prepare_enable(sc->clk_io);
 #endif
        sdhci_remove_host(host, 1);