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Re: [Qemu-devel] [5204] husb: Make control transactions asynchronous (Ma
From: |
Blue Swirl |
Subject: |
Re: [Qemu-devel] [5204] husb: Make control transactions asynchronous (Max Krasnyansky) |
Date: |
Sun, 14 Sep 2008 10:07:45 +0300 |
On 9/14/08, Anthony Liguori <address@hidden> wrote:
> Revision: 5204
> http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=5204
> Author: aliguori
> Date: 2008-09-14 01:06:09 +0000 (Sun, 14 Sep 2008)
>
> Log Message:
> -----------
> husb: Make control transactions asynchronous (Max Krasnyansky)
>
> USB is 99.8% async now :). 0.2% is the three control requests that
> we need to execute synchronously. We could off-load that to a thread
> or something but it's not worth the pain since those requests are
> performed only during device initialization (ie when device is
> connected to the VM).
>
> The change is a bit bigger than I wanted due to the fact that generic
> handle_packet()/handle_control() interface was not designed for
> async transactions. So I ended up adding custom handle_packet()
> code to usb-linux. We can make that generic if/when some other
> component needs it.
> +#include <linux/usb/ch9.h>
My Debian machines do not have this header file. Is it only used for
the structure definition that was removed by the commit?