Commit 7d5470a9 authored by Michael Hennerich's avatar Michael Hennerich Committed by Greg Kroah-Hartman

iio:ad5064: Make sure ad5064_i2c_write() returns 0 on success

commit 03fe472e upstream.

i2c_master_send() returns the number of bytes transferred on success while
the ad5064 driver expects that the write() callback returns 0 on success.
Fix that by translating any non negative return value of i2c_master_send()
to 0.

Fixes: commit 6a17a076 ("iio:dac:ad5064: Add support for the ad5629r and ad5669r")
Signed-off-by: default avatarMichael Hennerich <michael.hennerich@analog.com>
Signed-off-by: default avatarLars-Peter Clausen <lars@metafoo.de>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 0501435e
......@@ -598,10 +598,16 @@ static int ad5064_i2c_write(struct ad5064_state *st, unsigned int cmd,
unsigned int addr, unsigned int val)
{
struct i2c_client *i2c = to_i2c_client(st->dev);
int ret;
st->data.i2c[0] = (cmd << 4) | addr;
put_unaligned_be16(val, &st->data.i2c[1]);
return i2c_master_send(i2c, st->data.i2c, 3);
ret = i2c_master_send(i2c, st->data.i2c, 3);
if (ret < 0)
return ret;
return 0;
}
static int ad5064_i2c_probe(struct i2c_client *i2c,
......
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