linux-kernel - Re: [PATCH] w35und: fix usb_control_msg() error handling in wb35

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Date:	Fri, 23 Jan 2009 00:32:15 +0200
From:	Pekka Enberg <penberg@...helsinki.fi>
To:	Harvey Harrison <harvey.harrison@...il.com>
Cc:	Pavel Machek <pavel@...e.cz>,
	Sandro Bonazzola <sandro.bonazzola@...il.com>,
	Greg Kroah-Hartman <greg@...ah.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] w35und: fix usb_control_msg() error handling in 
	wb35_probe()

On Thu, Jan 22, 2009 at 11:19 PM, Harvey Harrison
<harvey.harrison@...il.com> wrote:
> On Thu, 2009-01-22 at 22:10 +0100, Pavel Machek wrote:
>> On Thu 2009-01-22 20:25:06, Sandro Bonazzola wrote:
>> > -----BEGIN PGP SIGNED MESSAGE-----
>> > Hash: SHA1
>> >
>> > Pavel Machek ha scritto:
>> > >> From: Pekka Enberg <penberg@...helsinki.fi>
>> > >>
>> > >> If successful, the usb_control_msg() function returns the number of
>> > >> bytes transferred. Fix up wb35_probe() to only bail out if the function
>> > >> returns a negative number.
>> > >>
>> > >> Reported-by: Sandro Bonazzola <sandro.bonazzola@...il.com>
>> > >> Signed-off-by: Pekka Enberg <penberg@...helsinki.fi>
>> > >
>> > > Acked-by: Pavel Machek <pavel@...e.cz>
>> >
>> > Ok, tested. Here is the result:
>> >
>> > # uname -a
>> > Linux arilinn 2.6.29-rc2-00013-gf3b8436-dirty #1 Thu Jan 22 19:39:23 CET 2009
>> > x86_64 AMD Athlon(tm) 64 Processor 3500+ AuthenticAMD GNU/Linux
>> >
>> > Inserting the USB device:
>> > # dmesg
>> > usb 1-3: new high speed USB device using ehci_hcd and address 4
>> > usb 1-3: New USB device found, idVendor=18e8, idProduct=6201
>> > usb 1-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
>> > usb 1-3: Product: Usb2Wlan
>> > usb 1-3: Manufacturer: WINBOND
>> > usb 1-3: SerialNumber: 101d350112
>> > usb 1-3: configuration #1 chosen from 1 choice
>> > w35und: module is from the staging directory, the quality is unknown, you have
>> > been warned.
>> > wmaster0 (usb): not using net_device_ops yet
>> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>
>> This looks like a key clue...
>>
>> Maybe you could try _current_ w35und on 2.6.28 or something like that?
>> I have feeling that networking core changed in incompatible way here.
>>
>
> I thought the net-device-ops conversion was opt in?  It shouldn't break
> anything if the driver hasn't been converted yet.

Looking at commit d314774cf2cd5dfeb39a00d37deee65d4c627927 ("netdev:
network device operations infrastructure") that seems to be the case.

                                  Pekka
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