diff options
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/industrialio-buffer.c | 59 | ||||
| -rw-r--r-- | drivers/iio/kfifo_buf.c | 15 |
2 files changed, 41 insertions, 33 deletions
diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c index 8cd89eb269c5..ba89357fc096 100644 --- a/drivers/iio/industrialio-buffer.c +++ b/drivers/iio/industrialio-buffer.c @@ -383,9 +383,9 @@ static int iio_buffer_add_channel_sysfs(struct iio_dev *indio_dev, return ret; } -ssize_t iio_buffer_read_length(struct device *dev, - struct device_attribute *attr, - char *buf) +static ssize_t iio_buffer_read_length(struct device *dev, + struct device_attribute *attr, + char *buf) { struct iio_dev *indio_dev = dev_to_iio_dev(dev); struct iio_buffer *buffer = indio_dev->buffer; @@ -396,12 +396,10 @@ ssize_t iio_buffer_read_length(struct device *dev, return 0; } -EXPORT_SYMBOL(iio_buffer_read_length); -ssize_t iio_buffer_write_length(struct device *dev, - struct device_attribute *attr, - const char *buf, - size_t len) +static ssize_t iio_buffer_write_length(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t len) { struct iio_dev *indio_dev = dev_to_iio_dev(dev); struct iio_buffer *buffer = indio_dev->buffer; @@ -428,16 +426,14 @@ ssize_t iio_buffer_write_length(struct device *dev, return ret ? ret : len; } -EXPORT_SYMBOL(iio_buffer_write_length); -ssize_t iio_buffer_show_enable(struct device *dev, - struct device_attribute *attr, - char *buf) +static ssize_t iio_buffer_show_enable(struct device *dev, + struct device_attribute *attr, + char *buf) { struct iio_dev *indio_dev = dev_to_iio_dev(dev); return sprintf(buf, "%d\n", iio_buffer_is_active(indio_dev->buffer)); } -EXPORT_SYMBOL(iio_buffer_show_enable); static int iio_compute_scan_bytes(struct iio_dev *indio_dev, const unsigned long *mask, bool timestamp) @@ -724,10 +720,10 @@ out_unlock: } EXPORT_SYMBOL_GPL(iio_update_buffers); -ssize_t iio_buffer_store_enable(struct device *dev, - struct device_attribute *attr, - const char *buf, - size_t len) +static ssize_t iio_buffer_store_enable(struct device *dev, + struct device_attribute *attr, + const char *buf, + size_t len) { int ret; bool requested_state; @@ -759,10 +755,14 @@ done: mutex_unlock(&indio_dev->mlock); return (ret < 0) ? ret : len; } -EXPORT_SYMBOL(iio_buffer_store_enable); static const char * const iio_scan_elements_group_name = "scan_elements"; +static DEVICE_ATTR(length, S_IRUGO | S_IWUSR, iio_buffer_read_length, + iio_buffer_write_length); +static DEVICE_ATTR(enable, S_IRUGO | S_IWUSR, + iio_buffer_show_enable, iio_buffer_store_enable); + int iio_buffer_alloc_sysfs_and_mask(struct iio_dev *indio_dev) { struct iio_dev_attr *p; @@ -774,6 +774,27 @@ int iio_buffer_alloc_sysfs_and_mask(struct iio_dev *indio_dev) if (!buffer) return 0; + attrcount = 0; + if (buffer->attrs) { + while (buffer->attrs[attrcount] != NULL) + 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) + return -ENOMEM; + + buffer->buffer_group.attrs[0] = &dev_attr_length.attr; + buffer->buffer_group.attrs[1] = &dev_attr_enable.attr; + if (buffer->attrs) + memcpy(&buffer->buffer_group.attrs[2], buffer->attrs, + sizeof(*&buffer->buffer_group.attrs) * (attrcount - 2)); + buffer->buffer_group.attrs[attrcount+2] = NULL; + + indio_dev->groups[indio_dev->groupcounter++] = &buffer->buffer_group; + if (buffer->scan_el_attrs != NULL) { attr = buffer->scan_el_attrs->attrs; while (*attr++ != NULL) @@ -838,6 +859,7 @@ error_free_scan_mask: kfree(buffer->scan_mask); error_cleanup_dynamic: iio_free_chan_devattr_list(&buffer->scan_el_dev_attr_list); + kfree(indio_dev->buffer->buffer_group.attrs); return ret; } @@ -848,6 +870,7 @@ void iio_buffer_free_sysfs_and_mask(struct iio_dev *indio_dev) return; kfree(indio_dev->buffer->scan_mask); + kfree(indio_dev->buffer->buffer_group.attrs); kfree(indio_dev->buffer->scan_el_group.attrs); iio_free_chan_devattr_list(&indio_dev->buffer->scan_el_dev_attr_list); } diff --git a/drivers/iio/kfifo_buf.c b/drivers/iio/kfifo_buf.c index 1258b4e0a722..3b0a3bc4f0ad 100644 --- a/drivers/iio/kfifo_buf.c +++ b/drivers/iio/kfifo_buf.c @@ -52,20 +52,6 @@ static int iio_get_length_kfifo(struct iio_buffer *r) return r->length; } -static IIO_BUFFER_ENABLE_ATTR; -static IIO_BUFFER_LENGTH_ATTR; - -static struct attribute *iio_kfifo_attributes[] = { - &dev_attr_length.attr, - &dev_attr_enable.attr, - NULL, -}; - -static struct attribute_group iio_kfifo_attribute_group = { - .attrs = iio_kfifo_attributes, - .name = "buffer", -}; - static int iio_mark_update_needed_kfifo(struct iio_buffer *r) { struct iio_kfifo *kf = iio_to_kfifo(r); @@ -169,7 +155,6 @@ struct iio_buffer *iio_kfifo_allocate(struct iio_dev *indio_dev) return NULL; kf->update_needed = true; iio_buffer_init(&kf->buffer); - kf->buffer.attrs = &iio_kfifo_attribute_group; kf->buffer.access = &kfifo_access_funcs; kf->buffer.length = 2; mutex_init(&kf->user_lock); |