From: Fabio Estevam <fabio.estevam@xxxxxxxxxxxxx>
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@xxxxxxxxxxxxx>
---
drivers/tty/serial/mxs-auart.c | 9 +++++++--
1 file 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);
--
1.8.1.2
--
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