Re: [PATCH v2] virtio: Add missing documentation for structure fields

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On Thu, May 11, 2023 at 04:46:22PM +0200, Simon Horman wrote:
Add missing documentation for the vqs_list_lock field of struct virtio_device,
and the validate field of struct virtio_driver.

./scripts/kernel-doc says:

.../virtio.h:131: warning: Function parameter or member 'vqs_list_lock' not described in 'virtio_device'
.../virtio.h:192: warning: Function parameter or member 'validate' not described in 'virtio_driver'
2 warnings as Errors

No functional changes intended.

Signed-off-by: Simon Horman <horms@xxxxxxxxxx>
---
Changes in v2:
- As suggested by Michael S. Tsirkin
 + @validate is not called on probe
 + @validate does validates config space
 + embarrassingly, validate was misspelt
- Link to v1: https://lore.kernel.org/r/20230510-virtio-kdoc-v1-1-d2b1824a9a2b@xxxxxxxxxx
---
include/linux/virtio.h | 2 ++
1 file changed, 2 insertions(+)

I left some minor comments, anyway this version LGTM:

Reviewed-by: Stefano Garzarella <sgarzare@xxxxxxxxxx>


diff --git a/include/linux/virtio.h b/include/linux/virtio.h
index b93238db94e3..3abe8e9c8090 100644
--- a/include/linux/virtio.h
+++ b/include/linux/virtio.h
@@ -103,6 +103,7 @@ int virtqueue_resize(struct virtqueue *vq, u32 num,
 * @config_enabled: configuration change reporting enabled
 * @config_change_pending: configuration change reported while disabled
 * @config_lock: protects configuration change reporting
+ * @vqs_list_lock: protects @vqs.

Maybe we can now remove `/* Protects VQs list access */`

 * @dev: underlying device.
 * @id: the device type identification (used to match it with a driver).
 * @config: the configuration ops for this device.
@@ -160,6 +161,7 @@ size_t virtio_max_dma_size(const struct virtio_device *vdev);
 * @feature_table_size: number of entries in the feature table array.
 * @feature_table_legacy: same as feature_table but when working in legacy mode.
 * @feature_table_size_legacy: number of entries in feature table legacy array.
+ * @validate: the function to call to validate features and config space

Maybe we can add ". Returns 0 or -errno."

Thanks,
Stefano

 * @probe: the function to call when a device is found.  Returns 0 or -errno.
 * @scan: optional function to call after successful probe; intended
 *    for virtio-scsi to invoke a scan.


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