Re: [PATCH] net: ftgmac100: Enable TX interrupt to avoid TX timeout

[Andrew Lunn]

On Wed, Sep 04, 2024 at 06:31:16PM +0800, Jacky Chou wrote:
> Currently, the driver only enables RX interrupt to handle RX
> packets and TX resources. Sometimes there is not RX traffic,
> so the TX resource needs to wait for RX interrupt to free.
> This situation will toggle the TX timeout watchdog when the MAC
> TX ring has no more resources to transmit packets.
> Therefore, enable TX interrupt to release TX resources at any time.

This looks reasonable. FTGMAC100_INT_ALL is used when NAPI polling is
not being used, so the extra interrupts should not cause additional
load.

Is this a fix? How easy is it to trigger the issue?

   Andrew