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iio: adis_buffer: check return value on page change 

On the trigger handler, we might need to change the device page. Hence,
we should check the return value from 'spi_write()' and act accordingly.

Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Reviewed-by: Alexandru Ardelean <ardeleanalex@gmail.com>
Link: https://lore.kernel.org/r/20210422101911.135630-5-nuno.sa@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Nuno Sa 2021-04-22 12:19:06 +02:00 committed by Jonathan Cameron
parent ab3df79782
commit 00f6742b5f
1 changed files with 7 additions and 1 deletions
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8
drivers/iio/imu/adis_buffer.c
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@ -134,7 +134,12 @@ static irqreturn_t adis_trigger_handler(int irq, void *p)
if (adis->current_page != 0) {
adis->tx[0] = ADIS_WRITE_REG(ADIS_REG_PAGE_ID);
adis->tx[1] = 0;
spi_write(adis->spi, adis->tx, 2);
ret = spi_write(adis->spi, adis->tx, 2);
if (ret) {
dev_err(&adis->spi->dev, "Failed to change device page: %d\n", ret);
mutex_unlock(&adis->state_lock);
goto irq_done;
}
}
}
@ -151,6 +156,7 @@ static irqreturn_t adis_trigger_handler(int irq, void *p)
iio_push_to_buffers_with_timestamp(indio_dev, adis->buffer,
pf->timestamp);
irq_done:
iio_trigger_notify_done(indio_dev->trig);
return IRQ_HANDLED;