linux-kernel - Re: [PATCH] Revert "Bluetooth: Use devname:vhci module alias for virtual HCI driver"

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Message-Id: <6803E0AA-F0C1-45F4-A7B8-428F4C6EE14E@holtmann.org>
Date:	Wed, 5 Mar 2014 11:02:30 -0800
From:	Marcel Holtmann <marcel@...tmann.org>
To:	Josh Boyer <jwboyer@...oraproject.org>
Cc:	Thomas Bächler <thomas@...hlinux.org>,
	"Gustavo F. Padovan" <gustavo@...ovan.org>,
	Johan Hedberg <johan.hedberg@...il.com>,
	"bluez mailin list (linux-bluetooth@...r.kernel.org)" 
	<linux-bluetooth@...r.kernel.org>,
	"Linux-Kernel@...r. Kernel. Org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Revert "Bluetooth: Use devname:vhci module alias for virtual HCI driver"

Hi Josh,

>>>>>> This reverts commit bfacbb9aec029b3200053d84c8cd5d7575f2d4a5.
>>>>> 
>>>>> NAK. We allocated a static minor for this.
>>>> 
>>>> Johan mentioned that.  Commit b075dd40c95d11c2c8690f6c4d6232fc,
>>>> correct?
>> 
>> I am sorry Marcel, I only looked at the Linus tree, not at bluetooth or
>> bluetooth-next. This commit should indeed fix the problem. Disregard my
>> patch.
>> 
>>> Why isn't that headed into 3.14 right now, and CC'd to
>>>> stable?  Currently you have a somewhat broken driver in 3.13 and
>>>> 3.14-rcX that seems to have a pretty clear fix.
>>> 
>>> somewhat broken? kmod prints this as an error, but it is not a regression in user functionality. The driver works just as before. The error message can be ignored.
>> 
>> It's a regression in my sanity, since numerous users blame all kernel
>> bugs on this error message and I am tired of explaining the situation
>> (problem + error message == problem found *sigh*). I only sent this
>> patch since I hadn't found the correct fix.
> 
> Exactly.
> 
>>> So if anybody feels strongly that the static device node assignment should be put into -stable, then I am fine with it. However I do not see this as passing requirement for a -stable fix since it is really not affecting anyone (minus the misleading message from kmod).
>> 
>> Since b075dd4 will end up in the Linus tree eventually, I have no
>> trouble backporting it myself.
> 
> I don't have any difficulty doing that either, but if it was in stable
> every distro getting bugs about it wouldn't have to carry the fix on
> their own.

the patch is currently in wireless-next and will eventually end up in net-next. Maybe it is better to have it cherry picked once it reaches net-next.

Regards

Marcel

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