Move all core (non-cusotm) buffer attributes to a vector to make it
easier to add more of them in the future.
Signed-off-by: Octavian Purdila <octavian.purdila@xxxxxxxxx>
---
drivers/iio/industrialio-buffer.c | 31 +++++++++++++++++++------------
1 file changed, 19 insertions(+), 12 deletions(-)
diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c
index 403b728..bc55434 100644
--- a/drivers/iio/industrialio-buffer.c
+++ b/drivers/iio/industrialio-buffer.c
@@ -759,6 +759,11 @@ static struct device_attribute dev_attr_length_ro = __ATTR(length,
static DEVICE_ATTR(enable, S_IRUGO | S_IWUSR,
iio_buffer_show_enable, iio_buffer_store_enable);
+static struct attribute *iio_buffer_attrs[] = {
+ &dev_attr_length.attr,
+ &dev_attr_enable.attr,
+};
+
int iio_buffer_alloc_sysfs_and_mask(struct iio_dev *indio_dev)
{
struct iio_dev_attr *p;
@@ -776,21 +781,23 @@ int iio_buffer_alloc_sysfs_and_mask(struct iio_dev *indio_dev)
attrcount++;
}
- buffer->buffer_group.name = "buffer";
- buffer->buffer_group.attrs = kcalloc(attrcount + 3,
- sizeof(*buffer->buffer_group.attrs), GFP_KERNEL);
- if (!buffer->buffer_group.attrs)
+ attr = kcalloc(attrcount + ARRAY_SIZE(iio_buffer_attrs) + 1,
+ sizeof(struct attribute *), GFP_KERNEL);
+ if (!attr)
return -ENOMEM;
- if (buffer->access->set_length)
- buffer->buffer_group.attrs[0] = &dev_attr_length.attr;
- else
- buffer->buffer_group.attrs[0] = &dev_attr_length_ro.attr;
- buffer->buffer_group.attrs[1] = &dev_attr_enable.attr;
+ memcpy(attr, iio_buffer_attrs, sizeof(iio_buffer_attrs));
+ if (!buffer->access->set_length)
+ attr[0] = &dev_attr_length_ro.attr;
+
if (buffer->attrs)
- memcpy(&buffer->buffer_group.attrs[2], buffer->attrs,
- sizeof(*&buffer->buffer_group.attrs) * attrcount);
- buffer->buffer_group.attrs[attrcount+2] = NULL;
+ memcpy(&attr[ARRAY_SIZE(iio_buffer_attrs)], buffer->attrs,
+ sizeof(struct attribute *) * attrcount);
+
+ attr[attrcount + ARRAY_SIZE(iio_buffer_attrs)] = NULL;
+
+ buffer->buffer_group.name = "buffer";
+ buffer->buffer_group.attrs = attr;
indio_dev->groups[indio_dev->groupcounter++] = &buffer->buffer_group;
--
1.9.1
--
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