Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756588AbYHYSu1 (ORCPT ); Mon, 25 Aug 2008 14:50:27 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754670AbYHYSuN (ORCPT ); Mon, 25 Aug 2008 14:50:13 -0400 Received: from iolanthe.rowland.org ([192.131.102.54]:47671 "HELO iolanthe.rowland.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1753996AbYHYSuM (ORCPT ); Mon, 25 Aug 2008 14:50:12 -0400 Date: Mon, 25 Aug 2008 14:50:10 -0400 (EDT) From: Alan Stern X-X-Sender: stern@iolanthe.rowland.org To: amruth cc: Oliver Neukum , , Subject: Re: USB Serial device disconnect causes IRQ disable not working after patch In-Reply-To: <334606.17794.qm@web45209.mail.sp1.yahoo.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4716 Lines: 94 On Mon, 25 Aug 2008, amruth wrote: > Hi > Alan > The patch suggested by you did not work. I tried in another computer and found same issue. I have detailed log below. This log shows you have 2 Magtek devices: one running at high speed and one running at full speed: > [ 143.041808] hub 1-0:1.0: state 7 ports 6 chg 0000 evt 0002 > [ 143.041808] ehci_hcd 0000:00:1d.7: GetStatus port 1 status 001803 POWER sig=j CSC CONNECT > [ 143.041808] hub 1-0:1.0: port 1, status 0501, change 0001, 480 Mb/s > [ 143.168024] hub 1-0:1.0: debounce: port 1: total 100ms stable 100ms status 0x501 > [ 143.224309] ehci_hcd 0000:00:1d.7: port 1 high speed > [ 143.224323] ehci_hcd 0000:00:1d.7: GetStatus port 1 status 001005 POWER sig=se0 PE CONNECT > [ 143.280021] usb 1-1: new high speed USB device using ehci_hcd and address 4 > [ 143.336281] ehci_hcd 0000:00:1d.7: port 1 high speed > [ 143.336292] ehci_hcd 0000:00:1d.7: GetStatus port 1 status 001005 POWER sig=se0 PE CONNECT > [ 143.412650] usb 1-1: default language 0x0409 > [ 143.413121] usb 1-1: uevent > [ 143.417056] usb 1-1: usb_probe_device > [ 143.417068] usb 1-1: configuration #1 chosen from 1 choice > [ 143.417361] usb 1-1: adding 1-1:1.0 (config #1, interface 0) > [ 143.417422] usb 1-1:1.0: uevent > [ 143.417622] usbserial_generic 1-1:1.0: usb_probe_interface > [ 143.417627] usbserial_generic 1-1:1.0: usb_probe_interface - got id > [ 143.417646] magtek 1-1:1.0: usb_probe_interface > [ 143.417650] magtek 1-1:1.0: usb_probe_interface - got id > [ 143.417659] magtek 1-1:1.0: Magtek 75/Excella USB card reader converter detected That was the high-speed device. > [ 148.765273] hub 1-0:1.0: state 7 ports 6 chg 0000 evt 0004 > [ 148.765273] ehci_hcd 0000:00:1d.7: GetStatus port 2 status 001803 POWER sig=j CSC CONNECT > [ 148.765273] hub 1-0:1.0: port 2, status 0501, change 0001, 480 Mb/s > [ 148.892021] hub 1-0:1.0: debounce: port 2: total 100ms stable 100ms status 0x501 > [ 148.948172] ehci_hcd 0000:00:1d.7: port 2 full speed --> companion > [ 148.948184] ehci_hcd 0000:00:1d.7: GetStatus port 2 status 003801 POWER OWNER sig=j CONNECT > [ 148.948201] usb usb2: wakeup_rh (auto-start) > [ 148.948222] hub 1-0:1.0: port 2 not reset yet, waiting 50ms > [ 149.004019] ehci_hcd 0000:00:1d.7: GetStatus port 2 status 003002 POWER OWNER sig=se0 CSC > [ 149.004054] hub 2-0:1.0: state 7 ports 2 chg 0000 evt 0004 > [ 149.004065] uhci_hcd 0000:00:1d.0: port 2 portsc 0093,00 > [ 149.004075] hub 2-0:1.0: port 2, status 0101, change 0001, 12 Mb/s > [ 149.132021] hub 2-0:1.0: debounce: port 2: total 100ms stable 100ms status 0x101 > [ 149.244042] usb 2-2: new full speed USB device using uhci_hcd and address 2 > [ 149.376015] usb 2-2: ep0 maxpacket = 8 > [ 149.399097] usb 2-2: default language 0x0409 > [ 149.408004] usb 2-2: uevent > [ 149.418007] usb 2-2: usb_probe_device > [ 149.418019] usb 2-2: configuration #1 chosen from 1 choice > [ 149.421042] usb 2-2: adding 2-2:1.0 (config #1, interface 0) > [ 149.421112] usb 2-2:1.0: uevent > [ 149.421158] usbserial_generic 2-2:1.0: usb_probe_interface > [ 149.421163] usbserial_generic 2-2:1.0: usb_probe_interface - got id > [ 149.421182] magtek 2-2:1.0: usb_probe_interface > [ 149.421186] magtek 2-2:1.0: usb_probe_interface - got id > [ 149.421193] magtek 2-2:1.0: Magtek 75/Excella USB card reader converter detected That was the full-speed device. Does it make any difference if you use only one of them instead of both? > [ 185.704529] irq 23: nobody cared (try booting with the "irqpoll" option) > [ 185.704529] Pid: 3505, comm: automount Not tainted 2.6.26-KGDB #1 > [ 185.704529] [] __report_bad_irq+0x2e/0x6f > [ 185.704529] [] note_interrupt+0x1d3/0x207 > [ 185.704529] [] ? handle_IRQ_event+0x21/0x48 > [ 185.704529] [] handle_fasteoi_irq+0x8a/0xaa > [ 185.704529] [] do_IRQ+0x71/0x8b > [ 185.704529] [] common_interrupt+0x23/0x28 > [ 185.704529] [] ? prof_cpu_mask_write_proc+0xf/0x2f > [ 185.704529] [] ? sysenter_past_esp+0x38/0x91 > [ 185.704529] ======================= > [ 185.704529] handlers: > [ 185.704529] [] (usb_hcd_irq+0x0/0x58) Try adding a statement saying: ehci_info(ehci, "irq status %x masked %x\n", status, status & INTR_MASK); to ehci-hcd.c inside ehci_irq(), just before the line that does status &= INTR_MASK; Then let's see what happens. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/