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Also, correct the cleanup labels in the error path to properly unregister the trigger before performing the triggered buffer cleanup, following the standard LIFO (Last-In-First-Out) resource release order. Fixes: 67e17300dc1d ("iio: potentiostat: add LMP91000 support") Signed-off-by: Salah Triki --- Changes in v2: - Fix the subject line to be more specific. - Use lmp91000_probe() instead of lmp91000_probe in the description. - Put iio_channel_get_all_cb() call on a single line. - Remove the unneeded blank line between iio_channel_get_all_cb() and its error check. drivers/iio/potentiostat/lmp91000.c | 28 +++++++++++++--------------- 1 file changed, 13 insertions(+), 15 deletions(-) diff --git a/drivers/iio/potentiostat/lmp91000.c b/drivers/iio/potentiostat/lmp91000.c index eccc2a34358f..273127063840 100644 --- a/drivers/iio/potentiostat/lmp91000.c +++ b/drivers/iio/potentiostat/lmp91000.c @@ -330,6 +330,16 @@ static int lmp91000_probe(struct i2c_client *client) if (ret) return ret; + data->cb_buffer = iio_channel_get_all_cb(dev, &lmp91000_buffer_cb, indio_dev); + if (IS_ERR(data->cb_buffer)) { + if (PTR_ERR(data->cb_buffer) == -ENODEV) + ret = -EPROBE_DEFER; + else + ret = PTR_ERR(data->cb_buffer); + + goto error_unreg_buffer; + } + ret = iio_trigger_set_immutable(iio_channel_cb_get_iio_dev(data->cb_buffer), data->trig); if (ret) { @@ -349,18 +359,6 @@ static int lmp91000_probe(struct i2c_client *client) if (ret) goto error_unreg_trigger; - data->cb_buffer = iio_channel_get_all_cb(dev, &lmp91000_buffer_cb, - indio_dev); - - if (IS_ERR(data->cb_buffer)) { - if (PTR_ERR(data->cb_buffer) == -ENODEV) - ret = -EPROBE_DEFER; - else - ret = PTR_ERR(data->cb_buffer); - - goto error_unreg_buffer; - } - data->adc_chan = iio_channel_cb_get_channels(data->cb_buffer); ret = iio_device_register(indio_dev); @@ -372,12 +370,12 @@ static int lmp91000_probe(struct i2c_client *client) error_unreg_cb_buffer: iio_channel_release_all_cb(data->cb_buffer); -error_unreg_buffer: - iio_triggered_buffer_cleanup(indio_dev); - error_unreg_trigger: iio_trigger_unregister(data->trig); +error_unreg_buffer: + iio_triggered_buffer_cleanup(indio_dev); + return ret; } -- 2.43.0