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SubjectRe: [PATCH -next v3] media: staging: atomisp: use list_splice_init in atomisp_compat_css20.c
On Fri, Jun 11, 2021 at 04:10:04PM +0800, Baokun Li wrote:
> Using list_splice_init() instead of entire while-loops
> in atomisp_compat_css20.c.

Seems fine to me.
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

> Reported-by: Hulk Robot <hulkci@huawei.com>
> Signed-off-by: Baokun Li <libaokun1@huawei.com>
> ---
> V1->V2:
> CC mailist
> V2->V3:
> Using list_move_tail() -> Using list_splice_init()
>
> .../media/atomisp/pci/atomisp_compat_css20.c | 35 +++----------------
> 1 file changed, 5 insertions(+), 30 deletions(-)
>
> diff --git a/drivers/staging/media/atomisp/pci/atomisp_compat_css20.c b/drivers/staging/media/atomisp/pci/atomisp_compat_css20.c
> index f60198bb8a1a..3844180d32b5 100644
> --- a/drivers/staging/media/atomisp/pci/atomisp_compat_css20.c
> +++ b/drivers/staging/media/atomisp/pci/atomisp_compat_css20.c
> @@ -2144,42 +2144,17 @@ void atomisp_css_stop(struct atomisp_sub_device *asd,
> }
>
> /* move stats buffers to free queue list */
> - while (!list_empty(&asd->s3a_stats_in_css)) {
> - s3a_buf = list_entry(asd->s3a_stats_in_css.next,
> - struct atomisp_s3a_buf, list);
> - list_del(&s3a_buf->list);
> - list_add_tail(&s3a_buf->list, &asd->s3a_stats);
> - }
> - while (!list_empty(&asd->s3a_stats_ready)) {
> - s3a_buf = list_entry(asd->s3a_stats_ready.next,
> - struct atomisp_s3a_buf, list);
> - list_del(&s3a_buf->list);
> - list_add_tail(&s3a_buf->list, &asd->s3a_stats);
> - }
> + list_splice_init(&asd->s3a_stats_in_css, &asd->s3a_stats);
> + list_splice_init(&asd->s3a_stats_ready, &asd->s3a_stats);
>
> spin_lock_irqsave(&asd->dis_stats_lock, irqflags);
> - while (!list_empty(&asd->dis_stats_in_css)) {
> - dis_buf = list_entry(asd->dis_stats_in_css.next,
> - struct atomisp_dis_buf, list);
> - list_del(&dis_buf->list);
> - list_add_tail(&dis_buf->list, &asd->dis_stats);
> - }
> + list_splice_init(&asd->dis_stats_in_css, &asd->dis_stats);
> asd->params.dis_proj_data_valid = false;
> spin_unlock_irqrestore(&asd->dis_stats_lock, irqflags);
>
> for (i = 0; i < ATOMISP_METADATA_TYPE_NUM; i++) {
> - while (!list_empty(&asd->metadata_in_css[i])) {
> - md_buf = list_entry(asd->metadata_in_css[i].next,
> - struct atomisp_metadata_buf, list);
> - list_del(&md_buf->list);
> - list_add_tail(&md_buf->list, &asd->metadata[i]);
> - }
> - while (!list_empty(&asd->metadata_ready[i])) {
> - md_buf = list_entry(asd->metadata_ready[i].next,
> - struct atomisp_metadata_buf, list);
> - list_del(&md_buf->list);
> - list_add_tail(&md_buf->list, &asd->metadata[i]);
> - }
> + list_splice_init(&asd->metadata_in_css[i], &asd->asd->metadata[i]);
> + list_splice_init(&asd->metadata_ready[i], &asd->asd->metadata[i]);
> }
>
> atomisp_flush_params_queue(&asd->video_out_capture);
> --
> 2.31.1
>

--
With Best Regards,
Andy Shevchenko


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