Re: [PATCH] staging: most: dim2: read done_buffers count locally from HDM channel

From: Julia Lawall
Date: Mon Oct 17 2022 - 16:56:59 EST




On Tue, 18 Oct 2022, Deepak R Varma wrote:

> The done_buffer count can be directly read from HDM channel instead of
> calling the dim_get_channel_state function. This change also results in
> obsoleting the dim_channel_state local structure variable.
>
> Signed-off-by: Deepak R Varma <drv@xxxxxxxxx>
> ---
>
> PLEASE NOTE: I have only built the module on my machine, but have not tested it.
> I am not sure how to test this change. I am willing to test it with appropriate
> guidance provided I have the necessary hardware.

For non experts, maybe it would be helpful to explain what motivated you
to do this?

julia

>
> drivers/staging/most/dim2/dim2.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/staging/most/dim2/dim2.c b/drivers/staging/most/dim2/dim2.c
> index ab72e11ac5ab..4c1f27898a29 100644
> --- a/drivers/staging/most/dim2/dim2.c
> +++ b/drivers/staging/most/dim2/dim2.c
> @@ -259,7 +259,6 @@ static void retrieve_netinfo(struct dim2_hdm *dev, struct mbo *mbo)
> static void service_done_flag(struct dim2_hdm *dev, int ch_idx)
> {
> struct hdm_channel *hdm_ch = dev->hch + ch_idx;
> - struct dim_ch_state_t st;
> struct list_head *head;
> struct mbo *mbo;
> int done_buffers;
> @@ -271,7 +270,7 @@ static void service_done_flag(struct dim2_hdm *dev, int ch_idx)
>
> spin_lock_irqsave(&dim_lock, flags);
>
> - done_buffers = dim_get_channel_state(&hdm_ch->ch, &st)->done_buffers;
> + done_buffers = hdm_ch->ch.done_sw_buffers_number;
> if (!done_buffers) {
> spin_unlock_irqrestore(&dim_lock, flags);
> return;
> --
> 2.30.2
>
>
>
>
>