linux-kernel - Re: [PATCH] input: driver for USB VoIP phones with CM109 chipset #2

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Date:	Tue, 05 Aug 2008 21:23:46 +0200
From:	"Alfred E. Heggestad" <aeh@...org>
To:	Oliver Neukum <oliver@...kum.org>
CC:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] input: driver for USB VoIP phones with CM109 chipset
 #2

Oliver Neukum wrote:
> Am Montag 04 August 2008 22:34:27 schrieb Alfred E. Heggestad:
>>> Looks like urb_irq is not properly initialised. Is there really nothing in the syslog?
>>> Please print out urb->interval
>>>
>> urb->interval == 32
>>
>> I added some more debugging in the driver, and after the module is loaded,
>> I press "TAB" in a shell to force Bell/Buzzer.
> 
> Can you printk the interval and the dev pointer in 
> cm109_urb_irq_callback?
> 

sure. it looks like the interval remains unchanged at 32.

from the log below you can see two scenarios; first the key '1' is pressed on the
CM109 device. then TAB is pressed in shell to get the Buzzer.

in the first case the two URBs urb_irq and urb_ctl are called every other
time, to scan the whole key matrix. calling usb_submit_urb() does not give
-EINVAL error here.

in the second case the URB is triggered by input-subsystem and cm109_input_ev()
and finally calls usb_submit_urb() on urb_ctl, but in the callback handler
of urb_ctl, the usb_submit_urb() on urb_irq fails with -EINVAL.


log:

;;;
;;; CM109 device inserted
;;;
Aug  5 21:11:08 io kernel: cm109: Keymap for Komunikate KIP1000 phone loaded
Aug  5 21:11:08 io kernel: cm109 1-2:1.3: usb_probe_interface
Aug  5 21:11:08 io kernel: cm109 1-2:1.3: usb_probe_interface - got id
Aug  5 21:11:08 io kernel: cm109: urb_irq init: interval=32
Aug  5 21:11:08 io kernel: input: CM109 USB driver as /class/input/input9
Aug  5 21:11:08 io kernel: cm109: cm109_urb_ctl_callback: buzzer_pending=0, ctl_urb_pending=0
Aug  5 21:11:08 io kernel: uhci_hcd 0000:00:1f.2: reserve dev 2 ep83-INT, period 32, phase 16, 14 us
Aug  5 21:11:08 io kernel: usbcore: registered new interface driver cm109
Aug  5 21:11:08 io kernel: cm109: CM109 phone driver: 20080726 (C) Alfred E. Heggestad

;;;
;;; Press key '1' on CM109 device
;;;

Aug  5 21:11:13 io kernel: cm109: cm109_urb_irq_callback: dev=cd7a4400 urb_irq->interval=32
Aug  5 21:11:13 io kernel: uhci_hcd 0000:00:1f.2: release dev 2 ep83-INT, period 32, phase 16, 14 us
Aug  5 21:11:13 io kernel: cm109: cm109_urb_ctl_callback: buzzer_pending=0, ctl_urb_pending=1
Aug  5 21:11:13 io kernel: uhci_hcd 0000:00:1f.2: reserve dev 2 ep83-INT, period 32, phase 16, 14 us
Aug  5 21:11:13 io kernel: cm109: cm109_urb_irq_callback: dev=cd7a4400 urb_irq->interval=32
Aug  5 21:11:13 io kernel: uhci_hcd 0000:00:1f.2: release dev 2 ep83-INT, period 32, phase 16, 14 us
Aug  5 21:11:13 io kernel: cm109: cm109_urb_ctl_callback: buzzer_pending=0, ctl_urb_pending=1
Aug  5 21:11:13 io kernel: uhci_hcd 0000:00:1f.2: reserve dev 2 ep83-INT, period 32, phase 16, 14 us
Aug  5 21:11:13 io kernel: cm109: cm109_urb_irq_callback: dev=cd7a4400 urb_irq->interval=32
Aug  5 21:11:13 io kernel: uhci_hcd 0000:00:1f.2: release dev 2 ep83-INT, period 32, phase 16, 14 us
Aug  5 21:11:13 io kernel: cm109: cm109_urb_ctl_callback: buzzer_pending=0, ctl_urb_pending=1
Aug  5 21:11:13 io kernel: uhci_hcd 0000:00:1f.2: reserve dev 2 ep83-INT, period 32, phase 16, 14 us
Aug  5 21:11:13 io kernel: cm109: cm109_urb_irq_callback: dev=cd7a4400 urb_irq->interval=32
Aug  5 21:11:13 io kernel: uhci_hcd 0000:00:1f.2: release dev 2 ep83-INT, period 32, phase 16, 14 us
Aug  5 21:11:13 io kernel: cm109: cm109_urb_ctl_callback: buzzer_pending=0, ctl_urb_pending=1
Aug  5 21:11:13 io kernel: uhci_hcd 0000:00:1f.2: reserve dev 2 ep83-INT, period 32, phase 16, 14 us
Aug  5 21:11:13 io kernel: cm109: cm109_urb_irq_callback: dev=cd7a4400 urb_irq->interval=32
Aug  5 21:11:13 io kernel: uhci_hcd 0000:00:1f.2: release dev 2 ep83-INT, period 32, phase 16, 14 us
Aug  5 21:11:13 io kernel: cm109: cm109_urb_ctl_callback: buzzer_pending=0, ctl_urb_pending=1
Aug  5 21:11:13 io kernel: uhci_hcd 0000:00:1f.2: reserve dev 2 ep83-INT, period 32, phase 16, 14 us
Aug  5 21:11:13 io kernel: cm109: cm109_urb_irq_callback: dev=cd7a4400 urb_irq->interval=32
Aug  5 21:11:13 io kernel: uhci_hcd 0000:00:1f.2: release dev 2 ep83-INT, period 32, phase 16, 14 us
Aug  5 21:11:13 io kernel: cm109: cm109_urb_ctl_callback: buzzer_pending=0, ctl_urb_pending=1
Aug  5 21:11:13 io kernel: uhci_hcd 0000:00:1f.2: reserve dev 2 ep83-INT, period 32, phase 16, 14 us
Aug  5 21:11:13 io kernel: cm109: cm109_urb_irq_callback: dev=cd7a4400 urb_irq->interval=32
Aug  5 21:11:13 io kernel: uhci_hcd 0000:00:1f.2: release dev 2 ep83-INT, period 32, phase 16, 14 us
Aug  5 21:11:13 io kernel: cm109: cm109_urb_ctl_callback: buzzer_pending=0, ctl_urb_pending=1
Aug  5 21:11:13 io kernel: uhci_hcd 0000:00:1f.2: reserve dev 2 ep83-INT, period 32, phase 16, 14 us
Aug  5 21:11:13 io kernel: cm109: cm109_urb_irq_callback: dev=cd7a4400 urb_irq->interval=32
Aug  5 21:11:13 io kernel: uhci_hcd 0000:00:1f.2: release dev 2 ep83-INT, period 32, phase 16, 14 us
Aug  5 21:11:13 io kernel: cm109: cm109_urb_ctl_callback: buzzer_pending=0, ctl_urb_pending=1
Aug  5 21:11:13 io kernel: uhci_hcd 0000:00:1f.2: reserve dev 2 ep83-INT, period 32, phase 16, 14 us
Aug  5 21:11:13 io kernel: cm109: cm109_urb_irq_callback: dev=cd7a4400 urb_irq->interval=32
Aug  5 21:11:13 io kernel: uhci_hcd 0000:00:1f.2: release dev 2 ep83-INT, period 32, phase 16, 14 us
Aug  5 21:11:13 io kernel: cm109: cm109_urb_ctl_callback: buzzer_pending=0, ctl_urb_pending=1
Aug  5 21:11:13 io kernel: uhci_hcd 0000:00:1f.2: reserve dev 2 ep83-INT, period 32, phase 16, 14 us
Aug  5 21:11:13 io kernel: cm109: cm109_urb_irq_callback: dev=cd7a4400 urb_irq->interval=32
Aug  5 21:11:13 io kernel: uhci_hcd 0000:00:1f.2: release dev 2 ep83-INT, period 32, phase 16, 14 us
Aug  5 21:11:13 io kernel: cm109: cm109_urb_ctl_callback: buzzer_pending=0, ctl_urb_pending=1
Aug  5 21:11:13 io kernel: uhci_hcd 0000:00:1f.2: reserve dev 2 ep83-INT, period 32, phase 16, 14 us
Aug  5 21:11:13 io kernel: cm109: cm109_urb_irq_callback: dev=cd7a4400 urb_irq->interval=32
Aug  5 21:11:13 io kernel: uhci_hcd 0000:00:1f.2: release dev 2 ep83-INT, period 32, phase 16, 14 us
Aug  5 21:11:13 io kernel: cm109: cm109_urb_ctl_callback: buzzer_pending=0, ctl_urb_pending=1
Aug  5 21:11:13 io kernel: uhci_hcd 0000:00:1f.2: reserve dev 2 ep83-INT, period 32, phase 16, 14 us
Aug  5 21:11:13 io kernel: cm109: cm109_urb_irq_callback: dev=cd7a4400 urb_irq->interval=32
Aug  5 21:11:13 io kernel: uhci_hcd 0000:00:1f.2: release dev 2 ep83-INT, period 32, phase 16, 14 us
Aug  5 21:11:13 io kernel: cm109: cm109_urb_ctl_callback: buzzer_pending=0, ctl_urb_pending=1
Aug  5 21:11:13 io kernel: uhci_hcd 0000:00:1f.2: reserve dev 2 ep83-INT, period 32, phase 16, 14 us

;;;
;;; Press 'TAB' in shell to force Bell/Buzzer
;;;

Aug  5 21:11:22 io kernel: cm109: cm109_toggle_buzzer_async: ctl_urb_pending=0 buzzer_pending=0
Aug  5 21:11:22 io kernel: cm109: cm109_submit_buzz_toggle: buzzer_state=1
Aug  5 21:11:22 io kernel: cm109: cm109_urb_ctl_callback: buzzer_pending=0, ctl_urb_pending=1
Aug  5 21:11:22 io kernel: cm109: cm109_urb_ctl_callback: usb_submit_urb (urb_irq) failed -22     <--- note -EINVAL
Aug  5 21:11:22 io kernel: cm109: cm109_toggle_buzzer_async: ctl_urb_pending=0 buzzer_pending=0
Aug  5 21:11:22 io kernel: cm109: cm109_submit_buzz_toggle: buzzer_state=0
Aug  5 21:11:22 io kernel: cm109: cm109_toggle_buzzer_async: ctl_urb_pending=1 buzzer_pending=0
Aug  5 21:11:22 io kernel: cm109: cm109_urb_ctl_callback: buzzer_pending=1, ctl_urb_pending=1
Aug  5 21:11:22 io kernel: cm109: cm109_submit_buzz_toggle: buzzer_state=0
Aug  5 21:11:22 io kernel: cm109: cm109_urb_ctl_callback: buzzer_pending=0, ctl_urb_pending=1
Aug  5 21:11:22 io kernel: cm109: cm109_urb_ctl_callback: usb_submit_urb (urb_irq) failed -22     <--- note -EINVAL

;;;
;;; modprobe -r cm109
;;;

Aug  5 21:11:28 io kernel: usbcore: deregistering interface driver cm109
Aug  5 21:11:28 io kernel: uhci_hcd 0000:00:1f.2: shutdown urb cef647e0 ep3in-intr
Aug  5 21:11:28 io kernel: cm109: cm109_urb_irq_callback: dev=cd7a4400 urb_irq->interval=32
Aug  5 21:11:28 io kernel: uhci_hcd 0000:00:1f.2: release dev 2 ep83-INT, period 32, phase 16, 14 us
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