I recently got a new laptop (HP 2510p) and have been playing with 
suspend/resume. Initially the dmesg after resume was fairly clean, but 
that was with the bluetooth device disabled (I initially disabled it in 
Windows).

After enabling it I get repeated warnings on resume starting with:
<snip>
usb 1-1: reset full speed USB device using uhci_hcd and address 3
hci_usb 1-1:1.0: no reset_resume for driver hci_usb?
hci_usb 1-1:1.1: no reset_resume for driver hci_usb?
usb_endpoint usbdev1.3_ep83: parent 1-1:1.1 is sleeping, will not add
------------[ cut here ]------------
WARNING: at drivers/base/power/main.c:82 device_pm_add+0x77/0xd3()
</snip>

The last one starts with:
<snip>
bluetooth hci0: parent 1-1:1.0 is sleeping, will not add
------------[ cut here ]------------
WARNING: at drivers/base/power/main.c:82 device_pm_add+0x77/0xd3()
</snip>

The call traces for these all start with "warn_on_slowpath".


And then there is also the following error. In the attached dmesg this is 
at the end of the dmesg, but I've also seen it a lot earlier (before 'PM: 
Syncing filesystems ... done.' even). I'm not completely sure if this is 
also bluetooth related, but I don't remember seeing it before enabling 
the bluetooth device.

<snip>
irq 19: nobody cared (try booting with the "irqpoll" option)
Pid: 0, comm: swapper Tainted: G        W 2.6.27-rc3 #52

Call Trace:
 <IRQ>  [<ffffffff8026bdcf>] __report_bad_irq+0x38/0x7c
[...]
</snip>

The attached full dmesg is from start of boot and includes one suspend to 
mem / resume cycle. Kernel config attached as well.

The bluetooth device is (from lsusb):
Bus 001 Device 003: ID 03f0:171d Hewlett-Packard Wireless (Bluetooth + 
WLAN) Interface [Integrated Module]

As I've not tested this with earlier kernels I have no idea if this is a 
regression or not.

Cheers,
FJP