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iio:core: Handle error when mask type is not separate

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When event spec is shared by multiple channels, which has definition
for mask_shared_by_type, iio_device_register_eventset fails.

For example:
static const struct iio_event_spec iio_dummy_events[] = {
	{
		.type = IIO_EV_TYPE_THRESH,
		.dir = IIO_EV_DIR_RISING,
		.mask_separate = BIT(IIO_EV_INFO_ENABLE),
		.mask_shared_by_type = BIT(IIO_EV_INFO_VALUE),
	}, {
		.type = IIO_EV_TYPE_THRESH,
		.dir = IIO_EV_DIR_FALLING,
		.mask_separate = BIT(IIO_EV_INFO_ENABLE),a
		.mask_shared_by_type = BIT(IIO_EV_INFO_VALUE),
	}
};

If two channels use this event spec, this will result in error.

This change handles EBUSY error similar to iio_device_add_info_mask_type().

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Cc: Stable@vger.kernel.org
This commit is contained in:
Srinivas Pandruvada 2014-08-07 22:03:00 +01:00 committed by Jonathan Cameron
parent bdac8ca90e
commit 78b3321610
1 changed files with 3 additions and 0 deletions
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3
drivers/iio/industrialio-event.c
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@ -345,6 +345,9 @@ static int iio_device_add_event(struct iio_dev *indio_dev,
&indio_dev->event_interface->dev_attr_list);
kfree(postfix);
if ((ret == -EBUSY) && (shared_by != IIO_SEPARATE))
continue;
if (ret)
return ret;