The code uses a local variable to initialize a null pointer in order to avoid accessing this null pointer later on.
Simply removed the 'unused' variable and check for the null pointer just before accessing it.
Signed-off-by: Herve Codina herve.codina@bootlin.com Reviewed-by: Andy Shevchenko andy.shevchenko@gmail.com --- drivers/iio/inkern.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c index f738db9a0c04..ce537b4ca6ca 100644 --- a/drivers/iio/inkern.c +++ b/drivers/iio/inkern.c @@ -849,14 +849,10 @@ static int iio_channel_read_max(struct iio_channel *chan, int *val, int *val2, int *type, enum iio_chan_info_enum info) { - int unused; const int *vals; int length; int ret;
- if (!val2) - val2 = &unused; - ret = iio_channel_read_avail(chan, &vals, type, &length, info); if (ret < 0) return ret; @@ -869,7 +865,8 @@ static int iio_channel_read_max(struct iio_channel *chan, break; default: *val = vals[4]; - *val2 = vals[5]; + if (val2) + *val2 = vals[5]; } return 0;