[PATCH V2] b43: be more user friendly with PHY info

[Joe Perches]

On Wed, 2012-07-25 at 16:22 +0200, Rafał Miłecki wrote:
> 2012/7/25 Joe Perches <joe at perches.com>:
> > On Wed, 2012-07-25 at 16:47 +0200, Rafał Miłecki wrote:
> >> use PHY names instead of magic numbers.
> > []
> >> diff --git a/drivers/net/wireless/b43/main.c b/drivers/net/wireless/b43/main.c
> > []
> >> @@ -4277,6 +4277,37 @@ out:
> > []
> >> +static char *b43_phy_name(struct b43_wldev *dev, u8 phy_type)
> >> +{
> >> +     switch (phy_type) {
> >> +     case B43_PHYTYPE_A:
> >> +             return "A";
> > []
> >> +     }
> >> +
> >> +     b43err(dev->wl, "Unknown PHY Type: %d\n", phy_type);
> >> +     return "UNKNOWN";
> >
> > In general, it's a bad idea to emit error messages
> > in a generic call like this.
> 
> This function is not supposed to be called anywhere else, it's only
> for a single user-friendly message.
> 
> 
> >> @@ -4337,13 +4368,12 @@ static int b43_phy_versioning(struct b43_wldev *dev)
> >>               unsupported = 1;
> >>       }
> >>       if (unsupported) {
> >> -             b43err(dev->wl, "FOUND UNSUPPORTED PHY "
> >> -                    "(Analog %u, Type %u, Revision %u)\n",
> >> -                    analog_type, phy_type, phy_rev);
> >> +             b43err(dev->wl, "FOUND UNSUPPORTED PHY (Analog %u, Type %s, Revision %u)\n",
> >> +                    analog_type, b43_phy_name(dev, phy_type), phy_rev);
> >
> > The extra message doesn't add much useful info
> > and can also cause errors in continued messages.
> 
> By "extra message" do you mean the one from b43_phy_name? I wanted to
> print PHY type as digit somewhere (in case it is not recognized). I
> can't use simple
> return ("UNKNOWN %d", phy_type);
> , such a solution would require allocating memory for string and
> freeing it. It would complicate the function.
> 
> Do you have any suggestion for better handling this?
> 

Change the UNSUPPORTED PHY message to

	"...Type: %d:(%s)...",
	..., phy_type, b43_phy_name(dev, phy_type), ...