From 2e036804d773e00ea19c6f6b8b7a4b8232c77da1 Mon Sep 17 00:00:00 2001 From: Alexandru Ardelean Date: Fri, 10 Apr 2020 12:36:07 +0300 Subject: iio: buffer: remove 'scan_el_attrs' attribute group from buffer struct This field doesn't seem used. It seems that only 'buffer->attrs' was ever used to extend sysfs attributes for an IIO buffer. Moving forward, it may not make sense to keep it. This patch removes the field and it's initialization code. Since we want to rework IIO buffer, to be able to add more buffers per IIO device, we will merge [somehow] the 'buffer' & 'scan_elements' groups, and we will continue to add the attributes to the 'buffer' group. Removing it here, will also make the rework here a bit smaller, since this code will not be present. Signed-off-by: Alexandru Ardelean Signed-off-by: Jonathan Cameron --- drivers/iio/industrialio-buffer.c | 8 -------- include/linux/iio/buffer_impl.h | 6 ------ 2 files changed, 14 deletions(-) diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c index e6fa1a4e135d..221157136af6 100644 --- a/drivers/iio/industrialio-buffer.c +++ b/drivers/iio/industrialio-buffer.c @@ -1283,11 +1283,6 @@ int iio_buffer_alloc_sysfs_and_mask(struct iio_dev *indio_dev) indio_dev->groups[indio_dev->groupcounter++] = &buffer->buffer_group; - if (buffer->scan_el_attrs != NULL) { - attr = buffer->scan_el_attrs->attrs; - while (*attr++ != NULL) - attrcount_orig++; - } attrcount = attrcount_orig; INIT_LIST_HEAD(&buffer->scan_el_dev_attr_list); channels = indio_dev->channels; @@ -1325,9 +1320,6 @@ int iio_buffer_alloc_sysfs_and_mask(struct iio_dev *indio_dev) ret = -ENOMEM; goto error_free_scan_mask; } - if (buffer->scan_el_attrs) - memcpy(buffer->scan_el_group.attrs, buffer->scan_el_attrs, - sizeof(buffer->scan_el_group.attrs[0])*attrcount_orig); attrn = attrcount_orig; list_for_each_entry(p, &buffer->scan_el_dev_attr_list, l) diff --git a/include/linux/iio/buffer_impl.h b/include/linux/iio/buffer_impl.h index 1e7edf6bed96..a63dc07b7350 100644 --- a/include/linux/iio/buffer_impl.h +++ b/include/linux/iio/buffer_impl.h @@ -94,12 +94,6 @@ struct iio_buffer { unsigned int watermark; /* private: */ - /* - * @scan_el_attrs: Control of scan elements if that scan mode - * control method is used. - */ - struct attribute_group *scan_el_attrs; - /* @scan_timestamp: Does the scan mode include a timestamp. */ bool scan_timestamp; -- cgit v1.2.3-59-g8ed1b