[U-Boot] [PATCH RFC] tsec: do not print Speed: if using netconsole

[Peter Tyser]

Hi Ed,

On Sat, 2010-01-23 at 15:39 -0600, Ed Swarthout wrote:
> CONFIG_NETCONSOLE on the p2020ds is functional with the tsec driver.
> But the printf in adjust_link() which is called by startup_tsec()
> called by tsec_init() in tsec.c is making it impossible to use.
> 
> For example typing 12345 on the netconsole causes the message to be
> printed for every character:
> 
> => Speed: 1000, full duplex
> 1Speed: 1000, full duplex
> 2Speed: 1000, full duplex
> 3Speed: 1000, full duplex
> 4Speed: 1000, full duplex
> 5Speed: 1000, full duplex
> 
> Unknown command '12345' - try 'help'
> => Speed: 1000, full duplex
> 
> Signed-off-by: Ed Swarthout <Ed.Swarthout at freescale.com>
> ---
> 
> Since the Speed message is useful, I don't particularly like this fix.
> 
>  drivers/net/tsec.c |    4 ++--
>  1 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/net/tsec.c b/drivers/net/tsec.c
> index d8b6619..23e4622 100644
> --- a/drivers/net/tsec.c
> +++ b/drivers/net/tsec.c
> @@ -846,10 +846,10 @@ static void adjust_link(struct eth_device *dev)
>  			printf("%s: Speed was bad\n", dev->name);
>  			break;
>  		}
> -
> +#ifndef CONFIG_NETCONSOLE
>  		printf("Speed: %d, %s duplex\n", priv->speed,
>  		       (priv->duplexity) ? "full" : "half");
> -
> +#endif

What if you changed the conditional to "strcmp(getenv("stdout"), nc)" so
the message still gets printed when not using a netconsole?

On a similar note, doesn't it seem a bit crazy that an ethernet
interface it brought up and down every time a packet is sent?  I would
have thought that the interface needed to be constantly enabled to
support receiving incoming packets.  If so, wouldn't the proper fix be
to not bring the interface up/down during netconsole use?

Best,
Peter