From: John Crispin <blogic@openwrt.org>
Date: Fri, 9 Aug 2013 18:54:31 +0000 (+0200)
Subject: serial: MIPS: lantiq: fix clock error check
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=8ad2ee955b810e2a8061d2d3d2e4e4072250b5ec;p=linux-beck.git

serial: MIPS: lantiq: fix clock error check

The clock should be checked with the proper IS_ERR() api before using it.

Signed-off-by: John Crispin <blogic@openwrt.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/tty/serial/lantiq.c b/drivers/tty/serial/lantiq.c
index 93ac04686eb9..88d01e0bb0c8 100644
--- a/drivers/tty/serial/lantiq.c
+++ b/drivers/tty/serial/lantiq.c
@@ -318,7 +318,7 @@ lqasc_startup(struct uart_port *port)
 	struct ltq_uart_port *ltq_port = to_ltq_uart_port(port);
 	int retval;
 
-	if (ltq_port->clk)
+	if (!IS_ERR(ltq_port->clk))
 		clk_enable(ltq_port->clk);
 	port->uartclk = clk_get_rate(ltq_port->fpiclk);
 
@@ -386,7 +386,7 @@ lqasc_shutdown(struct uart_port *port)
 		port->membase + LTQ_ASC_RXFCON);
 	ltq_w32_mask(ASCTXFCON_TXFEN, ASCTXFCON_TXFFLU,
 		port->membase + LTQ_ASC_TXFCON);
-	if (ltq_port->clk)
+	if (!IS_ERR(ltq_port->clk))
 		clk_disable(ltq_port->clk);
 }