diff options
| author |   Bjørn Mork <bjorn@mork.no> | 2012-04-30 09:26:11 +0200 |
|---|---|---|
| committer | Bjørn Mork <bjorn@mork.no> | 2012-06-04 21:58:13 +0200 |
| commit | 2a8b6ee5cd04420ea4a980e87d932055cc3c7c18 (patch) | |
| tree | f0060e6ee175ca1848b6cf4057c1d9f2d414b357 | |
| parent | 0be7fa4bbc63ddea52976fcef09b8a3e196ca462 (diff) | |
USB: cdc-wdm: add debug messages on cleanup
Device state cleanup is done in either wdm_disconnect or
wdm_release depending on the order they are called. Adding
a couple of debug messages to document the program flow.
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Acked-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 880bca3a2a6f159d7453e0cbcbfe2f1d8204d907)
Signed-off-by: Bjørn Mork <bjorn@mork.no>
| -rw-r--r-- | drivers/usb/class/cdc-wdm.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c index 6ec73d8cc22..32a2017ef47 100644 --- a/drivers/usb/class/cdc-wdm.c +++ b/drivers/usb/class/cdc-wdm.c @@ -623,10 +623,12 @@ static int wdm_release(struct inode *inode, struct file *file) if (!desc->count) { dev_dbg(&desc->intf->dev, "wdm_release: cleanup"); kill_urbs(desc); - if (!test_bit(WDM_DISCONNECTING, &desc->flags)) + if (!test_bit(WDM_DISCONNECTING, &desc->flags)) { desc->manage_power(desc->intf, 0); - else + } else { + dev_dbg(&desc->intf->dev, "%s: device gone - cleaning up\n", __func__); cleanup(desc); + } } mutex_unlock(&wdm_mutex); return 0; @@ -900,6 +902,8 @@ static void wdm_disconnect(struct usb_interface *intf) mutex_unlock(&desc->rlock); if (!desc->count) cleanup(desc); + else + dev_dbg(&intf->dev, "%s: %d open files - postponing cleanup\n", __func__, desc->count); mutex_unlock(&wdm_mutex); } |