Currently the iio_buffer_{alloc,free}_sysfs_and_mask() take 'indio_dev' as
primary argument. This change converts to take an IIO buffer as a primary
argument.That will allow the functions to get called for multiple buffers. Signed-off-by: Alexandru Ardelean <[email protected]> --- drivers/iio/industrialio-buffer.c | 46 ++++++++++++++++++++----------- 1 file changed, 30 insertions(+), 16 deletions(-) diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c index e7a847e7b103..6b1b5d5387bd 100644 --- a/drivers/iio/industrialio-buffer.c +++ b/drivers/iio/industrialio-buffer.c @@ -1312,26 +1312,14 @@ static struct attribute *iio_buffer_attrs[] = { &dev_attr_data_available.attr, }; -int iio_buffer_alloc_sysfs_and_mask(struct iio_dev *indio_dev) +static int __iio_buffer_alloc_sysfs_and_mask(struct iio_buffer *buffer) { + struct iio_dev *indio_dev = buffer->indio_dev; struct iio_dev_attr *p; struct attribute **attr; - struct iio_buffer *buffer = indio_dev->buffer; int ret, i, attrn, attrcount, attrcount_orig = 0; const struct iio_chan_spec *channels; - channels = indio_dev->channels; - if (channels) { - int ml = indio_dev->masklength; - - for (i = 0; i < indio_dev->num_channels; i++) - ml = max(ml, channels[i].scan_index + 1); - indio_dev->masklength = ml; - } - - if (!buffer) - return 0; - attrcount = 0; if (buffer->attrs) { while (buffer->attrs[attrcount] != NULL) @@ -1411,19 +1399,45 @@ int iio_buffer_alloc_sysfs_and_mask(struct iio_dev *indio_dev) return ret; } -void iio_buffer_free_sysfs_and_mask(struct iio_dev *indio_dev) +int iio_buffer_alloc_sysfs_and_mask(struct iio_dev *indio_dev) { struct iio_buffer *buffer = indio_dev->buffer; + const struct iio_chan_spec *channels; + int i; + + channels = indio_dev->channels; + if (channels) { + int ml = indio_dev->masklength; + + for (i = 0; i < indio_dev->num_channels; i++) + ml = max(ml, channels[i].scan_index + 1); + indio_dev->masklength = ml; + } if (!buffer) - return; + return 0; + + return __iio_buffer_alloc_sysfs_and_mask(buffer); +} +static void __iio_buffer_free_sysfs_and_mask(struct iio_buffer *buffer) +{ iio_buffer_free_scanmask(buffer); kfree(buffer->buffer_group.attrs); kfree(buffer->scan_el_group.attrs); iio_free_chan_devattr_list(&buffer->scan_el_dev_attr_list); } +void iio_buffer_free_sysfs_and_mask(struct iio_dev *indio_dev) +{ + struct iio_buffer *buffer = indio_dev->buffer; + + if (!buffer) + return; + + __iio_buffer_free_sysfs_and_mask(buffer); +} + static const struct file_operations iio_buffer_fileops = { .read = iio_buffer_read_outer, .release = iio_buffer_chrdev_release, -- 2.17.1
