[PATCH 3/4] amba-pl011: probe fail if we can get the clock

[Jean-Christophe PLAGNIOL-VILLARD]

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>
---
 drivers/serial/amba-pl011.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/drivers/serial/amba-pl011.c b/drivers/serial/amba-pl011.c
index 07508d0..8ddba2e 100644
--- a/drivers/serial/amba-pl011.c
+++ b/drivers/serial/amba-pl011.c
@@ -34,6 +34,7 @@
 #include <asm/io.h>
 #include <linux/amba/serial.h>
 #include <linux/clk.h>
+#include <linux/err.h>
 
 /*
  * We wrap our port structure around the generic console_device.
@@ -160,6 +161,9 @@ static int pl011_probe(struct device_d *dev)
 
 	uart->clk = clk_get(dev, NULL);
 
+	if (PTR_ERR(uart->clk) < 0)
+		return PTR_ERR(uart->clk);
+
 	cdev = &uart->uart;
 	dev->type_data = cdev;
 	cdev->dev = dev;
-- 
1.7.1