Re: [linux-usb-devel] 2.6.6-rc1: cdc-acm still (differently) broken

[Oliver Neukum]

Am Donnerstag, 15. April 2004 20:11 schrieb Colin Leroy:
> Hi,
>
> cdc-acm was broken since after 2.6.4, due to the alt_cursetting changes. I
> sent a patch, which has been integrated (well, the same one has ;-)) not
> long ago. I gave 2.6.6-rc1 a try, and found that cdc-acm is now broken is a
> new way: when plugging the phone, acm_probe() fails on interface #0; I
> traced the problem to this: usb_interface_claimed() returns true - and in
> fact intf->dev.driver is already cdc-acm (despite the fact that this is the
> first call to acm_probe() !), for reasons beyond my comprehension.
>
> But, even if the interface is claimed, the intfdata hasn't been set, which
> allows to do another check: the attached patch fixes this bug.

But somebody else may have claimed the interface. You can't simply
assume that only cdc-acm will take the device.

	Regards
		Oliver

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