Re: [PATCH 15/17] soc: fsl: cpm1: qmc: Handle timeslot entries at channel start() and stop()

[Arnd Bergmann]

On Tue, Nov 28, 2023, at 15:08, Herve Codina wrote:
> @@ -272,6 +274,8 @@ int qmc_chan_get_info(struct qmc_chan *chan, struct 
> qmc_chan_info *info)
>  	if (ret)
>  		return ret;
> 
> +	spin_lock_irqsave(&chan->ts_lock, flags);
> +
>  	info->mode = chan->mode;
>  	info->rx_fs_rate = tsa_info.rx_fs_rate;
>  	info->rx_bit_rate = tsa_info.rx_bit_rate;
> @@ -280,6 +284,8 @@ int qmc_chan_get_info(struct qmc_chan *chan, struct 
> qmc_chan_info *info)
>  	info->tx_bit_rate = tsa_info.tx_bit_rate;
>  	info->nb_rx_ts = hweight64(chan->rx_ts_mask);
> 
> +	spin_unlock_irqrestore(&chan->ts_lock, flags);
> +
>  	return 0;
>  }

I would normally use spin_lock_irq() instead of spin_lock_irqsave()
in functions that are only called outside of atomic context.

> +static int qmc_chan_start_rx(struct qmc_chan *chan);
> +
>  int qmc_chan_stop(struct qmc_chan *chan, int direction)
>  {
... 
> -static void qmc_chan_start_rx(struct qmc_chan *chan)
> +static int qmc_setup_chan_trnsync(struct qmc *qmc, struct qmc_chan *chan);
> +
> +static int qmc_chan_start_rx(struct qmc_chan *chan)
>  {

Can you reorder the static functions in a way that avoids the
forward declarations?

     Arnd