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Diffstat (limited to 'drivers/mfd')
-rw-r--r--drivers/mfd/wm8350-i2c.c15
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/mfd/wm8350-i2c.c b/drivers/mfd/wm8350-i2c.c
index 8dfe21bb3bd1..3e0ce0e50ea2 100644
--- a/drivers/mfd/wm8350-i2c.c
+++ b/drivers/mfd/wm8350-i2c.c
@@ -30,7 +30,12 @@ static int wm8350_i2c_read_device(struct wm8350 *wm8350, char reg,
ret = i2c_master_send(wm8350->i2c_client, &reg, 1);
if (ret < 0)
return ret;
- return i2c_master_recv(wm8350->i2c_client, dest, bytes);
+ ret = i2c_master_recv(wm8350->i2c_client, dest, bytes);
+ if (ret < 0)
+ return ret;
+ if (ret != bytes)
+ return -EIO;
+ return 0;
}
static int wm8350_i2c_write_device(struct wm8350 *wm8350, char reg,
@@ -38,13 +43,19 @@ static int wm8350_i2c_write_device(struct wm8350 *wm8350, char reg,
{
/* we add 1 byte for device register */
u8 msg[(WM8350_MAX_REGISTER << 1) + 1];
+ int ret;
if (bytes > ((WM8350_MAX_REGISTER << 1) + 1))
return -EINVAL;
msg[0] = reg;
memcpy(&msg[1], src, bytes);
- return i2c_master_send(wm8350->i2c_client, msg, bytes + 1);
+ ret = i2c_master_send(wm8350->i2c_client, msg, bytes + 1);
+ if (ret < 0)
+ return ret;
+ if (ret != bytes + 1)
+ return -EIO;
+ return 0;
}
static int wm8350_i2c_probe(struct i2c_client *i2c,