diff options
| -rw-r--r-- | drivers/iio/industrialio-buffer.c | 98 |
1 files changed, 49 insertions, 49 deletions
diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c index a7a080bed180..176d31d9f9d8 100644 --- a/drivers/iio/industrialio-buffer.c +++ b/drivers/iio/industrialio-buffer.c @@ -194,7 +194,7 @@ static ssize_t iio_buffer_write(struct file *filp, const char __user *buf, written = 0; add_wait_queue(&rb->pollq, &wait); do { - if (indio_dev->info == NULL) + if (!indio_dev->info) return -ENODEV; if (!iio_buffer_space_available(rb)) { @@ -210,7 +210,7 @@ static ssize_t iio_buffer_write(struct file *filp, const char __user *buf, } wait_woken(&wait, TASK_INTERRUPTIBLE, - MAX_SCHEDULE_TIMEOUT); + MAX_SCHEDULE_TIMEOUT); continue; } @@ -242,7 +242,7 @@ static __poll_t iio_buffer_poll(struct file *filp, struct iio_buffer *rb = ib->buffer; struct iio_dev *indio_dev = ib->indio_dev; - if (!indio_dev->info || rb == NULL) + if (!indio_dev->info || !rb) return 0; poll_wait(filp, &rb->pollq, wait); @@ -407,9 +407,9 @@ static ssize_t iio_scan_el_show(struct device *dev, /* 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, - bool strict) + unsigned int masklength, + const unsigned long *mask, + bool strict) { if (bitmap_empty(mask, masklength)) return NULL; @@ -427,7 +427,7 @@ static const unsigned long *iio_scan_mask_match(const unsigned long *av_masks, } static bool iio_validate_scan_mask(struct iio_dev *indio_dev, - const unsigned long *mask) + const unsigned long *mask) { if (!indio_dev->setup_ops->validate_scan_mask) return true; @@ -446,7 +446,7 @@ static bool iio_validate_scan_mask(struct iio_dev *indio_dev, * individual buffers request is plausible. */ static int iio_scan_mask_set(struct iio_dev *indio_dev, - struct iio_buffer *buffer, int bit) + struct iio_buffer *buffer, int bit) { const unsigned long *mask; unsigned long *trialmask; @@ -539,7 +539,6 @@ error_ret: mutex_unlock(&iio_dev_opaque->mlock); return ret < 0 ? ret : len; - } static ssize_t iio_scan_el_ts_show(struct device *dev, @@ -706,7 +705,7 @@ static unsigned int iio_storage_bytes_for_timestamp(struct iio_dev *indio_dev) } static int iio_compute_scan_bytes(struct iio_dev *indio_dev, - const unsigned long *mask, bool timestamp) + const unsigned long *mask, bool timestamp) { unsigned int bytes = 0; int length, i, largest = 0; @@ -732,7 +731,7 @@ static int iio_compute_scan_bytes(struct iio_dev *indio_dev, } static void iio_buffer_activate(struct iio_dev *indio_dev, - struct iio_buffer *buffer) + struct iio_buffer *buffer) { struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev); @@ -753,12 +752,12 @@ static void iio_buffer_deactivate_all(struct iio_dev *indio_dev) struct iio_buffer *buffer, *_buffer; list_for_each_entry_safe(buffer, _buffer, - &iio_dev_opaque->buffer_list, buffer_list) + &iio_dev_opaque->buffer_list, buffer_list) iio_buffer_deactivate(buffer); } static int iio_buffer_enable(struct iio_buffer *buffer, - struct iio_dev *indio_dev) + struct iio_dev *indio_dev) { if (!buffer->access->enable) return 0; @@ -766,7 +765,7 @@ static int iio_buffer_enable(struct iio_buffer *buffer, } static int iio_buffer_disable(struct iio_buffer *buffer, - struct iio_dev *indio_dev) + struct iio_dev *indio_dev) { if (!buffer->access->disable) return 0; @@ -774,7 +773,7 @@ static int iio_buffer_disable(struct iio_buffer *buffer, } static void iio_buffer_update_bytes_per_datum(struct iio_dev *indio_dev, - struct iio_buffer *buffer) + struct iio_buffer *buffer) { unsigned int bytes; @@ -782,13 +781,13 @@ static void iio_buffer_update_bytes_per_datum(struct iio_dev *indio_dev, return; bytes = iio_compute_scan_bytes(indio_dev, buffer->scan_mask, - buffer->scan_timestamp); + buffer->scan_timestamp); buffer->access->set_bytes_per_datum(buffer, bytes); } static int iio_buffer_request_update(struct iio_dev *indio_dev, - struct iio_buffer *buffer) + struct iio_buffer *buffer) { int ret; @@ -797,7 +796,7 @@ static int iio_buffer_request_update(struct iio_dev *indio_dev, ret = buffer->access->request_update(buffer); if (ret) { dev_dbg(&indio_dev->dev, - "Buffer not started: buffer parameter update failed (%d)\n", + "Buffer not started: buffer parameter update failed (%d)\n", ret); return ret; } @@ -807,7 +806,7 @@ static int iio_buffer_request_update(struct iio_dev *indio_dev, } static void iio_free_scan_mask(struct iio_dev *indio_dev, - const unsigned long *mask) + const unsigned long *mask) { /* If the mask is dynamically allocated free it, otherwise do nothing */ if (!indio_dev->available_scan_masks) @@ -823,8 +822,9 @@ struct iio_device_config { }; static int iio_verify_update(struct iio_dev *indio_dev, - struct iio_buffer *insert_buffer, struct iio_buffer *remove_buffer, - struct iio_device_config *config) + struct iio_buffer *insert_buffer, + struct iio_buffer *remove_buffer, + struct iio_device_config *config) { struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev); unsigned long *compound_mask; @@ -864,7 +864,7 @@ static int iio_verify_update(struct iio_dev *indio_dev, if (insert_buffer) { modes &= insert_buffer->access->modes; config->watermark = min(config->watermark, - insert_buffer->watermark); + insert_buffer->watermark); } /* Definitely possible for devices to support both of these. */ @@ -890,7 +890,7 @@ static int iio_verify_update(struct iio_dev *indio_dev, /* What scan mask do we actually have? */ compound_mask = bitmap_zalloc(indio_dev->masklength, GFP_KERNEL); - if (compound_mask == NULL) + if (!compound_mask) return -ENOMEM; scan_timestamp = false; @@ -911,18 +911,18 @@ static int iio_verify_update(struct iio_dev *indio_dev, if (indio_dev->available_scan_masks) { scan_mask = iio_scan_mask_match(indio_dev->available_scan_masks, - indio_dev->masklength, - compound_mask, - strict_scanmask); + indio_dev->masklength, + compound_mask, + strict_scanmask); bitmap_free(compound_mask); - if (scan_mask == NULL) + if (!scan_mask) return -EINVAL; } else { scan_mask = compound_mask; } config->scan_bytes = iio_compute_scan_bytes(indio_dev, - scan_mask, scan_timestamp); + scan_mask, scan_timestamp); config->scan_mask = scan_mask; config->scan_timestamp = scan_timestamp; @@ -954,16 +954,16 @@ static void iio_buffer_demux_free(struct iio_buffer *buffer) } static int iio_buffer_add_demux(struct iio_buffer *buffer, - struct iio_demux_table **p, unsigned int in_loc, unsigned int out_loc, - unsigned int length) + struct iio_demux_table **p, unsigned int in_loc, + unsigned int out_loc, + unsigned int length) { - if (*p && (*p)->from + (*p)->length == in_loc && - (*p)->to + (*p)->length == out_loc) { + (*p)->to + (*p)->length == out_loc) { (*p)->length += length; } else { *p = kmalloc(sizeof(**p), GFP_KERNEL); - if (*p == NULL) + if (!(*p)) return -ENOMEM; (*p)->from = in_loc; (*p)->to = out_loc; @@ -1027,7 +1027,7 @@ static int iio_buffer_update_demux(struct iio_dev *indio_dev, out_loc += length; } buffer->demux_bounce = kzalloc(out_loc, GFP_KERNEL); - if (buffer->demux_bounce == NULL) { + if (!buffer->demux_bounce) { ret = -ENOMEM; goto error_clear_mux_table; } @@ -1060,7 +1060,7 @@ error_clear_mux_table: } static int iio_enable_buffers(struct iio_dev *indio_dev, - struct iio_device_config *config) + struct iio_device_config *config) { struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev); struct iio_buffer *buffer, *tmp = NULL; @@ -1078,7 +1078,7 @@ static int iio_enable_buffers(struct iio_dev *indio_dev, ret = indio_dev->setup_ops->preenable(indio_dev); if (ret) { dev_dbg(&indio_dev->dev, - "Buffer not started: buffer preenable failed (%d)\n", ret); + "Buffer not started: buffer preenable failed (%d)\n", ret); goto err_undo_config; } } @@ -1118,7 +1118,7 @@ static int iio_enable_buffers(struct iio_dev *indio_dev, ret = indio_dev->setup_ops->postenable(indio_dev); if (ret) { dev_dbg(&indio_dev->dev, - "Buffer not started: postenable failed (%d)\n", ret); + "Buffer not started: postenable failed (%d)\n", ret); goto err_detach_pollfunc; } } @@ -1194,15 +1194,15 @@ static int iio_disable_buffers(struct iio_dev *indio_dev) } static int __iio_update_buffers(struct iio_dev *indio_dev, - struct iio_buffer *insert_buffer, - struct iio_buffer *remove_buffer) + struct iio_buffer *insert_buffer, + struct iio_buffer *remove_buffer) { struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev); struct iio_device_config new_config; int ret; ret = iio_verify_update(indio_dev, insert_buffer, remove_buffer, - &new_config); + &new_config); if (ret) return ret; @@ -1258,7 +1258,7 @@ int iio_update_buffers(struct iio_dev *indio_dev, return 0; if (insert_buffer && - (insert_buffer->direction == IIO_BUFFER_DIRECTION_OUT)) + insert_buffer->direction == IIO_BUFFER_DIRECTION_OUT) return -EINVAL; mutex_lock(&iio_dev_opaque->info_exist_lock); @@ -1275,7 +1275,7 @@ int iio_update_buffers(struct iio_dev *indio_dev, goto out_unlock; } - if (indio_dev->info == NULL) { + if (!indio_dev->info) { ret = -ENODEV; goto out_unlock; } @@ -1615,7 +1615,7 @@ static int __iio_buffer_alloc_sysfs_and_mask(struct iio_buffer *buffer, buffer_attrcount = 0; if (buffer->attrs) { - while (buffer->attrs[buffer_attrcount] != NULL) + while (buffer->attrs[buffer_attrcount]) buffer_attrcount++; } buffer_attrcount += ARRAY_SIZE(iio_buffer_attrs); @@ -1643,7 +1643,7 @@ static int __iio_buffer_alloc_sysfs_and_mask(struct iio_buffer *buffer, } ret = iio_buffer_add_channel_sysfs(indio_dev, buffer, - &channels[i]); + &channels[i]); if (ret < 0) goto error_cleanup_dynamic; scan_el_attrcount += ret; @@ -1651,10 +1651,10 @@ static int __iio_buffer_alloc_sysfs_and_mask(struct iio_buffer *buffer, iio_dev_opaque->scan_index_timestamp = channels[i].scan_index; } - if (indio_dev->masklength && buffer->scan_mask == NULL) { + if (indio_dev->masklength && !buffer->scan_mask) { buffer->scan_mask = bitmap_zalloc(indio_dev->masklength, GFP_KERNEL); - if (buffer->scan_mask == NULL) { + if (!buffer->scan_mask) { ret = -ENOMEM; goto error_cleanup_dynamic; } @@ -1771,7 +1771,7 @@ int iio_buffers_alloc_sysfs_and_mask(struct iio_dev *indio_dev) goto error_unwind_sysfs_and_mask; } - sz = sizeof(*(iio_dev_opaque->buffer_ioctl_handler)); + sz = sizeof(*iio_dev_opaque->buffer_ioctl_handler); iio_dev_opaque->buffer_ioctl_handler = kzalloc(sz, GFP_KERNEL); if (!iio_dev_opaque->buffer_ioctl_handler) { ret = -ENOMEM; @@ -1820,14 +1820,14 @@ void iio_buffers_free_sysfs_and_mask(struct iio_dev *indio_dev) * a time. */ bool iio_validate_scan_mask_onehot(struct iio_dev *indio_dev, - const unsigned long *mask) + const unsigned long *mask) { return bitmap_weight(mask, indio_dev->masklength) == 1; } EXPORT_SYMBOL_GPL(iio_validate_scan_mask_onehot); static const void *iio_demux(struct iio_buffer *buffer, - const void *datain) + const void *datain) { struct iio_demux_table *t; |