netdev - Re: [PATCH v7 1/2] bus: mhi: Add mhi_queue_is

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Date:   Tue, 27 Oct 2020 17:03:18 -0400
From:   Willem de Bruijn <willemdebruijn.kernel@...il.com>
To:     Loic Poulain <loic.poulain@...aro.org>
Cc:     Jakub Kicinski <kuba@...nel.org>,
        David Miller <davem@...emloft.net>,
        manivannan.sadhasivam@...aro.org, hemantk@...eaurora.org,
        Network Development <netdev@...r.kernel.org>,
        linux-arm-msm@...r.kernel.org, jhugo@...eaurora.org,
        bbhatt@...eaurora.org
Subject: Re: [PATCH v7 1/2] bus: mhi: Add mhi_queue_is_full function

On Tue, Oct 27, 2020 at 4:33 AM Loic Poulain <loic.poulain@...aro.org> wrote:
>
> This function can be used by client driver to determine whether it's
> possible to queue new elements in a channel ring.
>
> Signed-off-by: Loic Poulain <loic.poulain@...aro.org>
> ---
>  v1->v5: not part of the series
>  v6: Add this commit, used for stopping TX queue
>  v7: no change
>
>  drivers/bus/mhi/core/main.c | 15 +++++++++++++--
>  include/linux/mhi.h         |  7 +++++++
>  2 files changed, 20 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/bus/mhi/core/main.c b/drivers/bus/mhi/core/main.c
> index a588eac..44aa11f 100644
> --- a/drivers/bus/mhi/core/main.c
> +++ b/drivers/bus/mhi/core/main.c
> @@ -943,8 +943,8 @@ void mhi_ctrl_ev_task(unsigned long data)
>         }
>  }
>
> -static bool mhi_is_ring_full(struct mhi_controller *mhi_cntrl,
> -                            struct mhi_ring *ring)
> +static inline bool mhi_is_ring_full(struct mhi_controller *mhi_cntrl,
> +                                   struct mhi_ring *ring)

The compiler can decide whether to inline or not.

>  {
>         void *tmp = ring->wp + ring->el_size;
>
> @@ -1173,6 +1173,17 @@ int mhi_queue_buf(struct mhi_device *mhi_dev, enum dma_data_direction dir,
>  }
>  EXPORT_SYM