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| author | Fabio Estevam <fabio.estevam@freescale.com> | 2013-12-02 01:17:58 -0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-12-08 17:14:58 -0800 |
| commit | 9bbc3dca9d2212f900396ab9642c48279657a8c0 (patch) | |
| tree | 39490e44fb46380d78d13223a70640a800b59988 /drivers/tty | |
| parent | 753023dcdd2da515f991aa0e6a65016713f0c24f (diff) | |
| download | op-kernel-dev-9bbc3dca9d2212f900396ab9642c48279657a8c0.zip op-kernel-dev-9bbc3dca9d2212f900396ab9642c48279657a8c0.tar.gz | |
tty: serial: mxs-auart: Check the return value from clk_prepare_enable()
clk_prepare_enable() may fail, so let's check its return value and propagate it
in the case of error.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/mxs-auart.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/tty/serial/mxs-auart.c b/drivers/tty/serial/mxs-auart.c index d8b6fee..aa97fd8 100644 --- a/drivers/tty/serial/mxs-auart.c +++ b/drivers/tty/serial/mxs-auart.c @@ -734,9 +734,12 @@ static void mxs_auart_reset(struct uart_port *u) static int mxs_auart_startup(struct uart_port *u) { + int ret; struct mxs_auart_port *s = to_auart_port(u); - clk_prepare_enable(s->clk); + ret = clk_prepare_enable(s->clk); + if (ret) + return ret; writel(AUART_CTRL0_CLKGATE, u->membase + AUART_CTRL0_CLR); @@ -957,7 +960,9 @@ auart_console_setup(struct console *co, char *options) if (!s) return -ENODEV; - clk_prepare_enable(s->clk); + ret = clk_prepare_enable(s->clk); + if (ret) + return ret; if (options) uart_parse_options(options, &baud, &parity, &bits, &flow); |
