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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>
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1 changed files with 7 additions and 1 deletions
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@ -134,7 +134,12 @@ static irqreturn_t adis_trigger_handler(int irq, void *p)
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if (adis->current_page != 0) {
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adis->tx[0] = ADIS_WRITE_REG(ADIS_REG_PAGE_ID);
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adis->tx[1] = 0;
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spi_write(adis->spi, adis->tx, 2);
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ret = spi_write(adis->spi, adis->tx, 2);
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if (ret) {
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dev_err(&adis->spi->dev, "Failed to change device page: %d\n", ret);
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mutex_unlock(&adis->state_lock);
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goto irq_done;
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}
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}
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}
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@ -151,6 +156,7 @@ static irqreturn_t adis_trigger_handler(int irq, void *p)
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iio_push_to_buffers_with_timestamp(indio_dev, adis->buffer,
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pf->timestamp);
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irq_done:
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iio_trigger_notify_done(indio_dev->trig);
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return IRQ_HANDLED;
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