diff options
| author |   Marek Szyprowski <m.szyprowski@samsung.com> | 2010-09-23 16:22:05 +0200 |
|---|---|---|
| committer |   Chris Ball <cjb@laptop.org> | 2010-09-26 16:27:05 -0400 |
| commit | 9320f7cbbdd5febf013b0e91db29189724057738 (patch) | |
| tree | 8ba7a24a1c7dfe696bfadf4035f39011eba8d49a /drivers/mmc/host/sdhci-s3c.c | |
| parent | mmc: sdhci-s3c: fix incorrect spinlock usage after merge (diff) | |
| download | linux-dev-9320f7cbbdd5febf013b0e91db29189724057738.tar.xz linux-dev-9320f7cbbdd5febf013b0e91db29189724057738.zip | |
mmc: sdhci-s3c: fix NULL ptr access in sdhci_s3c_remove
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>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to '')
| -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 735d431f09e6..aacb862ecc8a 100644 --- a/drivers/mmc/host/sdhci-s3c.c +++ b/drivers/mmc/host/sdhci-s3c.c @@ -483,8 +483,10 @@ 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); |