[PATCH rtems-libbsd 1/3] dev/mii: Handle PHY read timeouts

[Sebastian Huber]

On 09/07/2021 03:14, Kinsey Moore wrote:
> PHY read timeouts return 0xffffffff and bypass the current bad/no PHY
> checks. This adds a check specifically for that read timeout to avoid
> probing PHYs that don't exist.
> ---
>   freebsd/sys/dev/mii/mii.c | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/freebsd/sys/dev/mii/mii.c b/freebsd/sys/dev/mii/mii.c
> index d0428f24..8f087cab 100644
> --- a/freebsd/sys/dev/mii/mii.c
> +++ b/freebsd/sys/dev/mii/mii.c
> @@ -474,6 +474,7 @@ mii_attach(device_t dev, device_t *miibus, if_t ifp,
>   		 */
>   		bmsr = MIIBUS_READREG(dev, ma.mii_phyno, MII_BMSR);
>   		if (bmsr == 0 || bmsr == 0xffff ||
> +		    bmsr == 0xffffffff ||

Could you please fix the driver so that it returns 0 or 0xffff in case 
of timeouts? This is the general MII module of FreeBSD. If you think 
there is a bug in this code, then please report it to FreeBSD first.

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