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-rw-r--r--target/linux/ramips/patches-3.10/0008-serial-MIPS-lantiq-fix-clock-error-check.patch32
1 files changed, 32 insertions, 0 deletions
diff --git a/target/linux/ramips/patches-3.10/0008-serial-MIPS-lantiq-fix-clock-error-check.patch b/target/linux/ramips/patches-3.10/0008-serial-MIPS-lantiq-fix-clock-error-check.patch
new file mode 100644
index 0000000000..9337942858
--- /dev/null
+++ b/target/linux/ramips/patches-3.10/0008-serial-MIPS-lantiq-fix-clock-error-check.patch
@@ -0,0 +1,32 @@
+From d94da02421c14fa9295feb218cd45fc01d0f470b Mon Sep 17 00:00:00 2001
+From: John Crispin <blogic@openwrt.org>
+Date: Thu, 8 Aug 2013 17:19:42 +0200
+Subject: [PATCH 08/25] serial: MIPS: lantiq: fix clock error check
+
+The clk should be checked with the proper IS_ERR() api before accessing it.
+
+Signed-off-by: John Crispin <blogic@openwrt.org>
+---
+ drivers/tty/serial/lantiq.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- 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);
+ }
+