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Commit 9bbc3dca authored by Fabio Estevam's avatar Fabio Estevam Committed by Greg Kroah-Hartman
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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: default avatarFabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 753023dc

drivers/tty/serial/mxs-auart.c

+7 −2
Original line number Diff line number Diff line
@@ -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);