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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>
This commit is contained in:
Peter Meerwald 2013-09-17 23:42:00 +01:00 коммит произвёл Jonathan Cameron
Родитель 7a1aeba7ed
Коммит 9572588c91
1 изменённых файлов: 8 добавлений и 5 удалений
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13
drivers/iio/industrialio-buffer.c
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@ -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);