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Date: Sat, 26 Jul 2014 12:01:36 -0700 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>, Jonathan Cameron <jic23@...nel.org> Subject: [PATCH 3.15 014/109] iio:core: Handle error when mask type is not separate 3.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com> commit 78b3321610bf920d7fceb1a0236faa881be0bcf3 upstream. 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@...ux.intel.com> Signed-off-by: Jonathan Cameron <jic23@...nel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- drivers/iio/industrialio-event.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/iio/industrialio-event.c +++ b/drivers/iio/industrialio-event.c @@ -341,6 +341,9 @@ static int iio_device_add_event(struct i &indio_dev->event_interface->dev_attr_list); kfree(postfix); + if ((ret == -EBUSY) && (shared_by != IIO_SEPARATE)) + continue; + if (ret) return ret; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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