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SubjectRe: [linux-usb-devel] [BUG] USB_PERSIST
Alan Stern wrote:
> On Thu, 29 Nov 2007, Raymano Garibaldi wrote:
>
>> The feature does work as long as the device remains plugged in and
>> that is what I have said in my previous postings too. What I'm saying
>> that should work and worked under 2.6.21 and is not working currently
>> is the ability to unplug and plug back in the device while the
>> computer is suspended before resuming without losing the mount.
>
> Okay, guess I misunderstood what you wrote before.
>
> The patch below for 2.6.23 should do what you want (and more besides).
> It forces the USB Persist feature to apply to all persist-enabled
> devices, whether they were unplugged or not.
>
> There's no chance of this getting accepted into the official kernel in
> such a simple form, but at least it will allow you to do what you want.
>
> Alan Stern
>
>
> --- 2.6.23/drivers/usb/core/driver.c1 2007-11-29 10:57:36.000000000 -0500
> +++ 2.6.23/drivers/usb/core/driver.c 2007-11-29 11:01:44.000000000 -0500
> @@ -1550,6 +1550,9 @@
> if (!(udev->reset_resume && udev->do_remote_wakeup))
> return -EPERM;
> }
> +
> + /* Force all system resumes to be reset-resumes */
> + udev->reset_resume = 1;
> return usb_external_resume_device(udev);
> }
..

Mmm.. how about a nice sysfs attr that the suspend scripts can write
that value to as needed ?
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