Re: [PATCH v1] media: uvcvideo: handle urb completion in a work queue

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Wed, 9 Sep 2015, Laurent Pinchart wrote:

> > > Instead of fixing the issue in the uvcvideo driver, would it then make
> > > more sense to fix it in the remaining hcd drivers ?
> > 
> > Unfortunately that's not so easy.  It involves some subtle changes
> > related to the way isochronous endpoints are handled.  I wouldn't know
> > what to change in any of the HCDs, except the ones that I maintain.
> 
> I'm not saying it would be easy, but I'm wondering whether it makes change to 
> move individual USB device drivers to work queues when the long term goal is 
> to use tasklets for URB completion anyway.

I'm not sure that this is a long-term goal for every HCD.  For
instance, there probably isn't much incentive to convert a driver if
its host controllers can only run at low speed or full speed.

Alan Stern

--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Linux Media]     [Linux Input]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [Old Linux USB Devel Archive]

  Powered by Linux