Messages in this thread | | | From | David Brownell <> | Subject | Re: [PATCH] USB: usbnet uses netif_msg_*() ethtool filtering | Date | Wed, 30 Mar 2005 16:50:17 -0800 |
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On Wednesday 30 March 2005 4:30 pm, Jeff Garzik wrote: > Linux Kernel Mailing List wrote: > > ChangeSet 1.2181.4.72, 2005/03/24 15:31:29-08:00, david-b@pacbell.net > > > > [PATCH] USB: usbnet uses netif_msg_*() ethtool filtering > > > > This converts most of the usbnet code to actually use the ethtool > > message flags. The ASIX code is left untouched, since there are > > a bunch of patches pending there ... that's where the remaining > > handful of "sparse -Wbitwise" warnings come from. > > > > Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> > > Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> > > It would be nice if people at least CC'd me on net driver patches.
Sorry. When drivers fit multiple classifications (e.g. USB _and_ NET, or USB _and_ PCI _and_ PM, etc) it's unfortunately routine that not all interested parties see them until something hits LKML. Even when the changes have significant cross-subsystem impact (these don't).
> netfi_msg_ifdown() is only for __interface__ up/down events; as such, > there should be only one message of this type in dev->open(), and one > message of this type in dev->stop().
I was going by the only writeup I've ever seen, which doesn't mention such a rule at all. The messages you highlighted are compatible with these rules: the interface is actually going down at that point.
http://www.tux.org/hypermail/linux-vortex/2001-Nov/0021.html
If there are other rules, they belong in Documentation/netif-msg.txt don't they? That way folk won't be forced to guess. Or risk accidentally following the "wrong" set of rules...
> > @@ -3044,7 +3047,7 @@ > > > > memset(urb->transfer_buffer, 0, urb->transfer_buffer_length); > > status = usb_submit_urb (urb, GFP_ATOMIC); > > - if (status != 0) > > + if (status != 0 && netif_msg_timer (dev)) > > deverr(dev, "intr resubmit --> %d", status); > > } > > > > this looks more like a debugging message?
It's an error of the "what do I do now??" variety, triggered by what's effectively a timer callback. USB interrupt transfers are polled by the host controller according to a schedule that's maintained by the HCD.
- Dave
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