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 93ac046..88d01e0 100644
--- a/drivers/tty/serial/lantiq.c
+++ b/drivers/tty/serial/lantiq.c
@@ -318,7 +318,7 @@
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 @@
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);
}