[PATCH] misc: isl29020: fix signedness bug

[Vasiliy Kulikov]

i2c_smbus_write_byte_data() may return negative error code.  This is not
seen to als_sensing_range_store() as the result is stored in unsigned int.
Made it signed.

Signed-off-by: Vasiliy Kulikov <segooon@xxxxxxxxx>
---
 Compile tested.

 drivers/misc/isl29020.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/misc/isl29020.c b/drivers/misc/isl29020.c
index 34fe835..629d31e 100644
--- a/drivers/misc/isl29020.c
+++ b/drivers/misc/isl29020.c
@@ -87,7 +87,7 @@ static ssize_t als_sensing_range_store(struct device *dev,
 		struct device_attribute *attr, const  char *buf, size_t count)
 {
 	struct i2c_client *client = to_i2c_client(dev);
-	unsigned int ret_val;
+	int ret_val;
 	unsigned long val;
 
 	if (strict_strtoul(buf, 10, &val))
-- 
1.7.0.4

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