Re: [PATCH] hw/net/imx_fec: return 0xffff when accessing non-existing PHY

[Philippe Mathieu-Daudé]

On 5/2/21 6:03 PM, Guenter Roeck wrote:
> If a PHY does not exist, attempts to read from it should return 0xffff.
> Otherwise the Linux kernel will believe that a PHY is there and select
> the non-existing PHY. This in turn will result in network errors later
> on since the real PHY is not selected or configured.
> 
> Since reading from or writing to a non-existing PHY is not an emulation
> error, replace guest error messages with traces.
> 
> Fixes: 461c51ad4275 ("Add a phy-num property to the i.MX FEC emulator")
> Cc: Jean-Christophe Dubois <jcd@tribudubois.net>
> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
> ---
>  hw/net/imx_fec.c    | 8 +++-----
>  hw/net/trace-events | 2 ++
>  2 files changed, 5 insertions(+), 5 deletions(-)

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>