iio: Minor cleanups of industrialio-buffer

adding one return value check
fix one kerneldoc

Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>

diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c
index a7ac4b5af03e818f7d4245d93729008bb507b24c..58180ec36fe89e94eb5113643c3bc7372427f0c3 100644 (file)
--- a/drivers/iio/industrialio-buffer.c
+++ b/drivers/iio/industrialio-buffer.c
@@ -243,6 +243,8 @@ static int iio_buffer_add_channel_sysfs(struct iio_dev *indio_dev,
                                             0,
                                             &indio_dev->dev,
                                             &buffer->scan_el_dev_attr_list);
+       if (ret)
+               goto error_ret;
        attrcount++;
        ret = attrcount;
 error_ret:
@@ -412,7 +414,7 @@ ssize_t iio_buffer_show_enable(struct device *dev,
 }
 EXPORT_SYMBOL(iio_buffer_show_enable);
 
-/* note NULL used as error indicator as it doesn't make sense. */
+/* Note NULL used as error indicator as it doesn't make sense. */
 static const unsigned long *iio_scan_mask_match(const unsigned long *av_masks,
                                          unsigned int masklength,
                                          const unsigned long *mask)
@@ -494,7 +496,7 @@ int iio_update_buffers(struct iio_dev *indio_dev,
                return 0;
        }
 
-       /* What scan mask do we actually have ?*/
+       /* What scan mask do we actually have? */
        compound_mask = kcalloc(BITS_TO_LONGS(indio_dev->masklength),
                                sizeof(long), GFP_KERNEL);
        if (compound_mask == NULL) {
@@ -560,7 +562,7 @@ int iio_update_buffers(struct iio_dev *indio_dev,
                        goto error_run_postdisable;
                }
        }
-       /* Definitely possible for devices to support both of these.*/
+       /* Definitely possible for devices to support both of these. */
        if (indio_dev->modes & INDIO_BUFFER_TRIGGERED) {
                if (!indio_dev->trig) {
                        printk(KERN_INFO "Buffer not started: no trigger\n");
@@ -571,7 +573,7 @@ int iio_update_buffers(struct iio_dev *indio_dev,
                indio_dev->currentmode = INDIO_BUFFER_TRIGGERED;
        } else if (indio_dev->modes & INDIO_BUFFER_HARDWARE) {
                indio_dev->currentmode = INDIO_BUFFER_HARDWARE;
-       } else { /* should never be reached */
+       } else { /* Should never be reached */
                ret = -EINVAL;
                goto error_run_postdisable;
        }
@@ -694,6 +696,7 @@ static bool iio_validate_scan_mask(struct iio_dev *indio_dev,
 
 /**
  * iio_scan_mask_set() - set particular bit in the scan mask
+ * @indio_dev: the iio device
  * @buffer: the buffer whose scan mask we are interested in
  * @bit: the bit to be set.
  *
@@ -714,7 +717,7 @@ int iio_scan_mask_set(struct iio_dev *indio_dev,
        if (trialmask == NULL)
                return -ENOMEM;
        if (!indio_dev->masklength) {
-               WARN_ON("trying to set scanmask prior to registering buffer\n");
+               WARN_ON("Trying to set scanmask prior to registering buffer\n");
                goto err_invalid_mask;
        }
        bitmap_copy(trialmask, buffer->scan_mask, indio_dev->masklength);