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| author | KeyYoung Park <keyyoung.park@samsung.com> | 2012-05-30 10:29:55 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-06-13 00:32:18 +0200 |
| commit | 7b15e1d9e342aca6c65f4824f1957f5245fcd87a (patch) | |
| tree | 43f00f2aebac23208ab21135aed99cc48cba369f | |
| parent | serial: samsung: Fixed wrong comparison for baudclk_rate (diff) | |
| download | linux-7b15e1d9e342aca6c65f4824f1957f5245fcd87a.tar.xz linux-7b15e1d9e342aca6c65f4824f1957f5245fcd87a.zip | |
serial: samsung: protect NULL dereference of clock name
When priting the serial clock source, if clock source name is null,
kernel reference NULL point.
Signed-off-by: KeyYoung Park <keyyoung.park@samsung.com>
Signed-off-by: Huisung Kang <hs1218.kang@samsung.com>
Signed-off-by: Kyoungil Kim <ki0351.kim@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/tty/serial/samsung.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/tty/serial/samsung.c b/drivers/tty/serial/samsung.c index cefdd2d7c58c..d57f165d6be8 100644 --- a/drivers/tty/serial/samsung.c +++ b/drivers/tty/serial/samsung.c @@ -1162,7 +1162,8 @@ static ssize_t s3c24xx_serial_show_clksrc(struct device *dev, if (IS_ERR(ourport->baudclk)) return -EINVAL; - return snprintf(buf, PAGE_SIZE, "* %s\n", ourport->baudclk->name); + return snprintf(buf, PAGE_SIZE, "* %s\n", + ourport->baudclk->name ?: "(null)"); } static DEVICE_ATTR(clock_source, S_IRUGO, s3c24xx_serial_show_clksrc, NULL); |