From: Lars-Peter Clausen lars@metafoo.de
commit 363c7dc72f79edd55bf1c4380e0fbf7f1bbc2c86 upstream.
The ads7950 uses a mutex as well as SPI transfers in its GPIO callbacks. This means these callbacks can sleep and the `can_sleep` flag should be set.
Having the flag set will make sure that warnings are generated when calling any of the callbacks from a potentially non-sleeping context.
Fixes: c97dce792dc8 ("iio: adc: ti-ads7950: add GPIO support") Signed-off-by: Lars-Peter Clausen lars@metafoo.de Acked-by: David Lechner david@lechnology.com Link: https://lore.kernel.org/r/20230312210933.2275376-1-lars@metafoo.de Cc: Stable@vger.kernel.org Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/iio/adc/ti-ads7950.c | 1 + 1 file changed, 1 insertion(+)
--- a/drivers/iio/adc/ti-ads7950.c +++ b/drivers/iio/adc/ti-ads7950.c @@ -635,6 +635,7 @@ static int ti_ads7950_probe(struct spi_d st->chip.label = dev_name(&st->spi->dev); st->chip.parent = &st->spi->dev; st->chip.owner = THIS_MODULE; + st->chip.can_sleep = true; st->chip.base = -1; st->chip.ngpio = TI_ADS7950_NUM_GPIOS; st->chip.get_direction = ti_ads7950_get_direction;