diff options
| author | Paul Cercueil <paul@crapouillou.net> | 2022-01-17 11:25:12 +0100 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2022-06-15 23:07:10 +0200 |
| commit | 754d013433bc7cf4677223ccd8dcbeb2a09c9982 (patch) | |
| tree | f4f8a73e0033fb88c07be10775ca96bbb23ddfaf /drivers/iio/adc | |
| parent | iio: imu: st_lsm6dsx: Limit requested watermark value to hwfifo size (diff) | |
| download | linux-754d013433bc7cf4677223ccd8dcbeb2a09c9982.tar.xz linux-754d013433bc7cf4677223ccd8dcbeb2a09c9982.zip | |
iio: at91-sama5d2: Limit requested watermark value to hwfifo size
Instead of returning an error if the watermark value is too high, which
the core will silently ignore anyway, limit the value to the hardware
FIFO size; a lower-than-requested value is still better than using the
default, which is usually 1.
Cc: Eugen Hristev <eugen.hristev@microchip.com>
Cc: Nicolas Ferre <nicolas.ferre@microchip.com>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Ludovic Desroches <ludovic.desroches@microchip.com>
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20220117102512.31725-2-paul@crapouillou.net
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio/adc')
| -rw-r--r-- | drivers/iio/adc/at91-sama5d2_adc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c index b764823ce57e..fe3131c9593c 100644 --- a/drivers/iio/adc/at91-sama5d2_adc.c +++ b/drivers/iio/adc/at91-sama5d2_adc.c @@ -1752,7 +1752,7 @@ static int at91_adc_set_watermark(struct iio_dev *indio_dev, unsigned int val) int ret; if (val > AT91_HWFIFO_MAX_SIZE) - return -EINVAL; + val = AT91_HWFIFO_MAX_SIZE; if (!st->selected_trig->hw_trig) { dev_dbg(&indio_dev->dev, "we need hw trigger for DMA\n"); |