diff options
Diffstat (limited to 'drivers/firewire')
| -rw-r--r-- | drivers/firewire/core-cdev.c | 25 |
1 files changed, 11 insertions, 14 deletions
diff --git a/drivers/firewire/core-cdev.c b/drivers/firewire/core-cdev.c index c2d24cc5c1f1..ac6f9ad9e88e 100644 --- a/drivers/firewire/core-cdev.c +++ b/drivers/firewire/core-cdev.c @@ -1062,10 +1062,10 @@ static int ioctl_create_iso_context(struct client *client, union ioctl_arg *arg) if (client->version < FW_CDEV_VERSION_AUTO_FLUSH_ISO_OVERFLOW) context->drop_overflow_headers = true; - /* We only support one context at this time. */ - spin_lock_irq(&client->lock); + // We only support one context at this time. + guard(spinlock_irq)(&client->lock); + if (client->iso_context != NULL) { - spin_unlock_irq(&client->lock); fw_iso_context_destroy(context); return -EBUSY; @@ -1075,7 +1075,6 @@ static int ioctl_create_iso_context(struct client *client, union ioctl_arg *arg) client->device->card, iso_dma_direction(context)); if (ret < 0) { - spin_unlock_irq(&client->lock); fw_iso_context_destroy(context); return ret; @@ -1084,7 +1083,6 @@ static int ioctl_create_iso_context(struct client *client, union ioctl_arg *arg) } client->iso_closure = a->closure; client->iso_context = context; - spin_unlock_irq(&client->lock); a->handle = 0; @@ -1806,16 +1804,15 @@ static int fw_device_op_mmap(struct file *file, struct vm_area_struct *vma) if (ret < 0) return ret; - spin_lock_irq(&client->lock); - if (client->iso_context) { - ret = fw_iso_buffer_map_dma(&client->buffer, - client->device->card, - iso_dma_direction(client->iso_context)); - client->buffer_is_mapped = (ret == 0); + scoped_guard(spinlock_irq, &client->lock) { + if (client->iso_context) { + ret = fw_iso_buffer_map_dma(&client->buffer, client->device->card, + iso_dma_direction(client->iso_context)); + if (ret < 0) + goto fail; + client->buffer_is_mapped = true; + } } - spin_unlock_irq(&client->lock); - if (ret < 0) - goto fail; ret = vm_map_pages_zero(vma, client->buffer.pages, client->buffer.page_count); |