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path: root/drivers/misc/isl29020.c
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Diffstat (limited to 'drivers/misc/isl29020.c')
-rw-r--r--drivers/misc/isl29020.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/misc/isl29020.c b/drivers/misc/isl29020.c
index 34fe835921c..ca47e628507 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))
@@ -106,6 +106,8 @@ static ssize_t als_sensing_range_store(struct device *dev,
val = 4;
ret_val = i2c_smbus_read_byte_data(client, 0x00);
+ if (ret_val < 0)
+ return ret_val;
ret_val &= 0xFC; /*reset the bit before setting them */
ret_val |= val - 1;