sdhci-s3c: add missing remove function

commit 9d51a6b2487724e8713cd2794cf09ffeee5f6932 upstream.

System will crash sooner or later once the memory with the code of the
s3c-sdhci.ko module is reused for something else. I really have no idea
how the lack of remove function went unnoticed into the mainline code.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c
index 50997d2a63e7effcd533d9d95fea45b9ebf34efc..676cd0c327f5948bfc94e469c202528e7ed454a4 100644 (file)
--- a/drivers/mmc/host/sdhci-s3c.c
+++ b/drivers/mmc/host/sdhci-s3c.c
@@ -372,6 +372,26 @@ static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
 
 static int __devexit sdhci_s3c_remove(struct platform_device *pdev)
 {
+       struct sdhci_host *host =  platform_get_drvdata(pdev);
+       struct sdhci_s3c *sc = sdhci_priv(host);
+       int ptr;
+
+       sdhci_remove_host(host, 1);
+
+       for (ptr = 0; ptr < 3; ptr++) {
+               clk_disable(sc->clk_bus[ptr]);
+               clk_put(sc->clk_bus[ptr]);
+       }
+       clk_disable(sc->clk_io);
+       clk_put(sc->clk_io);
+
+       iounmap(host->ioaddr);
+       release_resource(sc->ioarea);
+       kfree(sc->ioarea);
+
+       sdhci_free_host(host);
+       platform_set_drvdata(pdev, NULL);
+
        return 0;
 }