target/linux/lantiq/patches-3.10/0030-serial-MIPS-lantiq-fix-clock-error-check.patch

   1 From 8c0b4b6a69cf3033eaa93cee7b3a6ca9ce43f572 Mon Sep 17 00:00:00 2001
   2 From: John Crispin <blogic@openwrt.org>
   3 Date: Fri, 9 Aug 2013 20:54:31 +0200
   4 Subject: [PATCH 30/34] serial: MIPS: lantiq: fix clock error check
   5
   6 The clock should be checked with the proper IS_ERR() api before using it.
   7
   8 Signed-off-by: John Crispin <blogic@openwrt.org>
   9 ---
  10  drivers/tty/serial/lantiq.c |    4 ++--
  11  1 file changed, 2 insertions(+), 2 deletions(-)
  12
  13 diff --git a/drivers/tty/serial/lantiq.c b/drivers/tty/serial/lantiq.c
  14 index 93ac046..88d01e0 100644
  15 --- a/drivers/tty/serial/lantiq.c
  16 +++ b/drivers/tty/serial/lantiq.c
  17 @@ -318,7 +318,7 @@ lqasc_startup(struct uart_port *port)
  18         struct ltq_uart_port *ltq_port = to_ltq_uart_port(port);
  19         int retval;
  20
  21 -       if (ltq_port->clk)
  22 +       if (!IS_ERR(ltq_port->clk))
  23                 clk_enable(ltq_port->clk);
  24         port->uartclk = clk_get_rate(ltq_port->fpiclk);
  25
  26 @@ -386,7 +386,7 @@ lqasc_shutdown(struct uart_port *port)
  27                 port->membase + LTQ_ASC_RXFCON);
  28         ltq_w32_mask(ASCTXFCON_TXFEN, ASCTXFCON_TXFFLU,
  29                 port->membase + LTQ_ASC_TXFCON);
  30 -       if (ltq_port->clk)
  31 +       if (!IS_ERR(ltq_port->clk))
  32                 clk_disable(ltq_port->clk);
  33  }
  34
  35 --
  36 1.7.10.4
  37