linux-kernel - 2.6.31-rc2 warning in drivers/usb/host/ehci-hcd.c

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Message-ID: <20090706222651.GA6709@Pilar.aei.mpg.de>
Date:	Tue, 7 Jul 2009 00:26:51 +0200
From:	"Carlos R. Mafra" <crmafra2@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	linux-usb@...r.kernel.org, dbrownell@...rs.sourceforge.net
Subject: 2.6.31-rc2 warning in drivers/usb/host/ehci-hcd.c

I was looking at the 'dmesg' output for 2.6.31-rc2 and noticed
this warning

------------[ cut here ]------------
WARNING: at drivers/usb/host/ehci-hcd.c:1048 ehci_endpoint_reset+0xfc/0x140 [ehci_hcd]()
Hardware name: VGN-FZ240E
clear_halt for a busy endpoint
Modules linked in: usbhid nvram dvb_usb_dib0700 dib7000p dib7000m dvb_usb dib3000mc dibx000_common dib0070 option usb_storage usbserial uvc                                  video snd_hda_codec_idt snd_hda_intel snd_hda_codec snd_hwdep snd_pcm iwlagn ehci_hcd sky2 snd_timer uhci_hcd i2c_i801 evdev snd_page_alloc                                   sg sr_mod ata_piix ahci libata sd_mod scsi_mod
Pid: 5043, comm: comgt Not tainted 2.6.31-rc2 #109
Call Trace:
 [<ffffffffa00d2b6c>] ? ehci_endpoint_reset+0xfc/0x140 [ehci_hcd]
 [<ffffffff8103f2b8>] warn_slowpath_common+0x78/0xd0
 [<ffffffff8103f394>] warn_slowpath_fmt+0x64/0x70
 [<ffffffff81264bd5>] ? usb_free_urb+0x15/0x20
 [<ffffffff812660d7>] ? usb_start_wait_urb+0x97/0xe0
 [<ffffffffa00d2b6c>] ehci_endpoint_reset+0xfc/0x140 [ehci_hcd]
 [<ffffffff81261fed>] usb_hcd_reset_endpoint+0x1d/0x70
 [<ffffffff812653f2>] usb_reset_endpoint+0x22/0x40
 [<ffffffff81266556>] usb_clear_halt+0x66/0x80
 [<ffffffffa0199d1c>] option_open+0xcc/0x180 [option]
 [<ffffffffa0177986>] serial_open+0x176/0x240 [usbserial]
 [<ffffffff811bd81a>] tty_open+0x1fa/0x530
 [<ffffffff810ac755>] chrdev_open+0xf5/0x1a0
 [<ffffffff810ac660>] ? chrdev_open+0x0/0x1a0
 [<ffffffff810a77c5>] __dentry_open+0xd5/0x2f0
 [<ffffffff810a7ae7>] nameidata_to_filp+0x57/0x70
 [<ffffffff810b68ba>] do_filp_open+0x71a/0xb10
 [<ffffffff810c06ea>] ? alloc_fd+0x4a/0x140
 [<ffffffff810a75df>] do_sys_open+0x7f/0x140
 [<ffffffff810a76cb>] sys_open+0x1b/0x20
 [<ffffffff8100bdab>] system_call_fastpath+0x16/0x1b
---[ end trace f21382a71ff3302a ]---


However I can still use a USB pendrive and everything seems to be fine.
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