diff options
| author | Marek Szyprowski <m.szyprowski@samsung.com> | 2010-09-23 16:22:05 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-10-28 21:43:55 -0700 |
| commit | ce6258fde20a9d6bb213a8c2acb6fe8a003d6c7b (patch) | |
| tree | 63a35e4b5501e9c762fe459f9d347a55e083c943 | |
| parent | f4fe0c68bc27a9d5d26fdaa13e308a6acfde8bba (diff) | |
mmc: sdhci-s3c: fix NULL ptr access in sdhci_s3c_remove
commit 9320f7cbbdd5febf013b0e91db29189724057738 upstream.
If not all clocks have been defined in platform data, the driver will
cause a null pointer dereference when it is removed. This patch fixes
this issue.
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: Chris Ball <cjb@laptop.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/mmc/host/sdhci-s3c.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c index 676cd0c327f..14c5480e059 100644 --- a/drivers/mmc/host/sdhci-s3c.c +++ b/drivers/mmc/host/sdhci-s3c.c @@ -379,8 +379,10 @@ static int __devexit sdhci_s3c_remove(struct platform_device *pdev) sdhci_remove_host(host, 1); for (ptr = 0; ptr < 3; ptr++) { - clk_disable(sc->clk_bus[ptr]); - clk_put(sc->clk_bus[ptr]); + if (sc->clk_bus[ptr]) { + clk_disable(sc->clk_bus[ptr]); + clk_put(sc->clk_bus[ptr]); + } } clk_disable(sc->clk_io); clk_put(sc->clk_io); |