Re: [PATCH net-next] net: lan966x: Improve the CPU TX bitrate.

Horatiu Vultur
2022-03-08T22:27:14Z

The 03/08/2022 22:36, Andrew Lunn wrote:
>
> > static int lan966x_port_inj_ready(struct lan966x *lan966x, u8 grp)
> > {
> > - u32 val;
> > + unsigned long time = jiffies + usecs_to_jiffies(READL_TIMEOUT_US);
> > + int ret = 0;
> >
> > - return readx_poll_timeout_atomic(lan966x_port_inj_status, lan966x, val,
> > - QS_INJ_STATUS_FIFO_RDY_GET(val) & BIT(grp),
> > - READL_SLEEP_US, READL_TIMEOUT_US);
> > + while (!(lan_rd(lan966x, QS_INJ_STATUS) &
> > + QS_INJ_STATUS_FIFO_RDY_SET(BIT(grp)))) {
> > + if (time_after(jiffies, time)) {
> > + ret = -ETIMEDOUT;
> > + break;
> > + }
>
> Did you try setting READL_SLEEP_US to 0? readx_poll_timeout_atomic()
> explicitly supports that.

I have tried but it didn't improve. It was the same as before.

>
> Andrew

--
/Horatiu