Hi Johannes,
> The attached patch implements suspend/resume for the hci_usb bluetooth
> driver by simply killing all outstanding urbs on suspend, and re-issuing
> them on resume.
>
> This allows me to actually use the internal bluetooth "dongle" in my
> powerbook after suspend-to-ram without taking down all userland programs
> (sdpd, ...) and the hci device and reloading the module.
thanks for the patch. Due to the removed owner field it won't apply
cleanly to 2.6.16-rc1, but I can fix this easily by myself.
> +static int hci_usb_resume(struct usb_interface *intf)
> +{
> + struct hci_usb *husb = usb_get_intfdata(intf);
> + int i, err;
> + unsigned long flags;
> + if (!husb || intf == husb->isoc_iface)
> + return 0;
> +
> + for (i = 0; i < 4; i++) {
> + struct _urb_queue *q = &husb->pending_q[i];
> + struct _urb *_urb;
> + spin_lock_irqsave(&q->lock, flags);
> + list_for_each_entry(_urb, &q->head, list) {
> + err = usb_submit_urb(&_urb->urb, GFP_ATOMIC);
> + if (err) break;
> + }
> + spin_unlock_irqrestore(&q->lock, flags);
> + if (err)
> + return -EIO;
> + }
> + return 0;
> +}
What happens if hci_usb_resume() really returns -EIO? Do we have to kill
the URBs again or does the USB subsystems disconnect the device in this
case?
Regards
Marcel
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On 1/19/06, Johannes Berg <[email protected]> wrote:
> The attached patch implements suspend/resume for the hci_usb bluetooth
> driver by simply killing all outstanding urbs on suspend, and re-issuing
> them on resume.
>
> This allows me to actually use the internal bluetooth "dongle" in my
> powerbook after suspend-to-ram without taking down all userland programs
> (sdpd, ...) and the hci device and reloading the module.
Anybody have success using this patch with suspend2?
I get:
Feb 9 13:48:32 localhost kernel: [17193418.644000] uhci_hcd
0000:00:1f.2: USB bus 1 deregistered
Feb 9 13:48:32 localhost kernel: [17193418.660000] ACPI: PCI
interrupt for device 0000:00:1f.2 disabled
Feb 9 13:48:39 localhost kernel: [17193425.268000] Suspend2 2.2:
Initiating a software suspend cycle.
Feb 9 13:48:46 localhost kernel: [17193427.272000] userspace ui:
Failed to contact userspace process.
Feb 9 13:48:46 localhost kernel: [17193427.272000] Freezing processes
Feb 9 13:48:47 localhost kernel: [17193432.404000] Stopping tasks failed.
Feb 9 13:48:47 localhost kernel: [17193432.404000] Tasks that refused
to be refrigerated and haven't since exited:
Feb 9 13:48:47 localhost kernel: [17193432.404000] - snd-bt-scod
(#2206) signalled and todo list empty.
Feb 9 13:48:47 localhost kernel: [17193432.428000] Suspend2 debugging info=
:
Feb 9 13:48:47 localhost kernel: [17193432.428000] - SUSPEND core : 2.2
Feb 9 13:48:47 localhost kernel: [17193432.428000] - Kernel Version :
2.6.15.1-p4-s2-ll
Feb 9 13:48:47 localhost kernel: [17193432.428000] - Compiler vers. : 4.0
Feb 9 13:48:47 localhost kernel: [17193432.428000] - Attempt number : 2
Feb 9 13:48:47 localhost kernel: [17193432.428000] - Parameters :
17 32 0 1 525 0
Feb 9 13:48:47 localhost kernel: [17193432.428000] - Overall expected
compression percentage: 50.
Feb 9 13:48:47 localhost kernel: [17193432.428000] - Compressor lzf enable=
d.
Feb 9 13:48:47 localhost kernel: [17193432.428000] - Swapwriter active.
Feb 9 13:48:47 localhost kernel: [17193432.428000] Swap available
for image: 307241 pages.
Feb 9 13:48:47 localhost kernel: [17193432.428000] - Filewriter inactive.
Feb 9 13:48:47 localhost kernel: [17193432.428000] - No I/O speed
stats available.
Feb 9 13:48:47 localhost kernel: [17193433.656000] USB Universal Host
Controller Interface driver v2.3
Feb 9 13:48:47 localhost kernel: [17193433.668000] ACPI: PCI
Interrupt 0000:00:1f.2[D] -> GSI 19 (level, low) -> IRQ 16
Feb 9 13:48:47 localhost kernel: [17193433.672000] PCI: Setting
latency timer of device 0000:00:1f.2 to 64
--
John C. McCabe-Dansted
Master's Student
94709339 (In Perth)
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