6.12-stable review patch. If anyone has any objections, please let me know.
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From: Jonathan Cameron Jonathan.Cameron@huawei.com
[ Upstream commit 60a0cf2ebab92011055ab7db6553c0fc3c546938 ]
Reorder the claiming of direct mode and runtime pm calls to simplify handling a little. For correct error handling, after the reorder iio_device_release_direct_mode() must be claimed in an error occurs in pm_runtime_resume_and_get()
Fixes: 1ca2cfbc0c33 ("iio: add MEMSensing MSA311 3-axis accelerometer driver") Reviewed-by: David Lechner dlechner@baylibre.com Link: https://patch.msgid.link/20250217140135.896574-7-jic23@kernel.org Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/iio/accel/msa311.c | 26 +++++++++++++++----------- 1 file changed, 15 insertions(+), 11 deletions(-)
diff --git a/drivers/iio/accel/msa311.c b/drivers/iio/accel/msa311.c index 57025354c7cd5..f484be27058d9 100644 --- a/drivers/iio/accel/msa311.c +++ b/drivers/iio/accel/msa311.c @@ -593,23 +593,25 @@ static int msa311_read_raw_data(struct iio_dev *indio_dev, __le16 axis; int err;
- err = pm_runtime_resume_and_get(dev); + err = iio_device_claim_direct_mode(indio_dev); if (err) return err;
- err = iio_device_claim_direct_mode(indio_dev); - if (err) + err = pm_runtime_resume_and_get(dev); + if (err) { + iio_device_release_direct_mode(indio_dev); return err; + }
mutex_lock(&msa311->lock); err = msa311_get_axis(msa311, chan, &axis); mutex_unlock(&msa311->lock);
- iio_device_release_direct_mode(indio_dev); - pm_runtime_mark_last_busy(dev); pm_runtime_put_autosuspend(dev);
+ iio_device_release_direct_mode(indio_dev); + if (err) { dev_err(dev, "can't get axis %s (%pe)\n", chan->datasheet_name, ERR_PTR(err)); @@ -755,10 +757,6 @@ static int msa311_write_samp_freq(struct iio_dev *indio_dev, int val, int val2) unsigned int odr; int err;
- err = pm_runtime_resume_and_get(dev); - if (err) - return err; - /* * Sampling frequency changing is prohibited when buffer mode is * enabled, because sometimes MSA311 chip returns outliers during @@ -768,6 +766,12 @@ static int msa311_write_samp_freq(struct iio_dev *indio_dev, int val, int val2) if (err) return err;
+ err = pm_runtime_resume_and_get(dev); + if (err) { + iio_device_release_direct_mode(indio_dev); + return err; + } + err = -EINVAL; for (odr = 0; odr < ARRAY_SIZE(msa311_odr_table); odr++) if (val == msa311_odr_table[odr].integral && @@ -778,11 +782,11 @@ static int msa311_write_samp_freq(struct iio_dev *indio_dev, int val, int val2) break; }
- iio_device_release_direct_mode(indio_dev); - pm_runtime_mark_last_busy(dev); pm_runtime_put_autosuspend(dev);
+ iio_device_release_direct_mode(indio_dev); + if (err) dev_err(dev, "can't update frequency (%pe)\n", ERR_PTR(err));