From: Arnd Bergmann arnd@arndb.de
commit 90c6260c1905a68fb596844087f2223bd4657fee upstream.
gcc-9 complains about a blatant uninitialized variable use that all earlier compiler versions missed:
drivers/iio/adc/rcar-gyroadc.c:510:5: warning: 'ret' may be used uninitialized in this function [-Wmaybe-uninitialized]
Return -EINVAL instead here and a few lines above it where we accidentally return 0 on failure.
Cc: stable@vger.kernel.org Fixes: 059c53b32329 ("iio: adc: Add Renesas GyroADC driver") Signed-off-by: Arnd Bergmann arnd@arndb.de Reviewed-by: Wolfram Sang wsa+renesas@sang-engineering.com Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/iio/adc/rcar-gyroadc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/iio/adc/rcar-gyroadc.c +++ b/drivers/iio/adc/rcar-gyroadc.c @@ -382,7 +382,7 @@ static int rcar_gyroadc_parse_subdevs(st dev_err(dev, "Only %i channels supported with %pOFn, but reg = <%i>.\n", num_channels, child, reg); - return ret; + return -EINVAL; } }
@@ -391,7 +391,7 @@ static int rcar_gyroadc_parse_subdevs(st dev_err(dev, "Channel %i uses different ADC mode than the rest.\n", reg); - return ret; + return -EINVAL; }
/* Channel is valid, grab the regulator. */