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| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2015-05-25 15:03:32 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-06-01 06:55:12 +0900 |
| commit | 6f0c3091e73df7ad1393c3400d168b9777b4a63c (patch) | |
| tree | d2821fe64d3397c00c6b944dedea318075171017 /drivers/tty | |
| parent | 3a63d22425ff229c8fb51e7aec1de1e9a4e19b34 (diff) | |
| download | op-kernel-dev-6f0c3091e73df7ad1393c3400d168b9777b4a63c.zip op-kernel-dev-6f0c3091e73df7ad1393c3400d168b9777b4a63c.tar.gz | |
serial: of_serial: check the return value of clk_prepare_enable()
The function clk_prepare_enable() may fail, and in that case it
does not make sense to proceed. Let's check its return code and
error out if it is a negative value.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/of_serial.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/tty/serial/of_serial.c b/drivers/tty/serial/of_serial.c index d353fdf..6823df9 100644 --- a/drivers/tty/serial/of_serial.c +++ b/drivers/tty/serial/of_serial.c @@ -74,7 +74,10 @@ static int of_platform_serial_setup(struct platform_device *ofdev, return PTR_ERR(info->clk); } - clk_prepare_enable(info->clk); + ret = clk_prepare_enable(info->clk); + if (ret < 0) + return ret; + clk = clk_get_rate(info->clk); } /* If current-speed was set, then try not to change it. */ |
