Message-ID: <781960.93140.qm@web45208.mail.sp1.yahoo.com>
Date:	Mon, 25 Aug 2008 14:12:49 -0700 (PDT)
From:	amruth <amruth_pv@...oo.com>
To:	Alan Stern <stern@...land.harvard.edu>
Cc:	Oliver Neukum <oliver@...kum.org>, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: USB Serial device disconnect causes IRQ disable after using ehci_info

Hi
Alan

> That was the full-speed device.  Does it make any
> difference if you use 
> only one of them instead of both?
> 
The problem is seen when both are used.

> 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.
Here is the output after using ehci_info

[  310.517577] usbcore: registered new interface driver usbserial
[  310.519417] usbserial: USB Serial support registered for generic
[  310.521129] usbcore: registered new interface driver usbserial_generic
[  310.521141] usbserial: USB Serial Driver core
[  310.600476] usbserial: USB Serial support registered for TI USB 3410 1 port adapter
[  310.602481] usbserial: USB Serial support registered for TI USB 5052 2 port adapter
[  310.602481] usbcore: registered new interface driver ti_usb_3410_5052
[  310.602481] ti_usb_3410_5052: TI USB 3410/5052 Serial Driver v0.9
[  416.344945] ehci_hcd 0000:00:1d.7: irq status c masked 4
[  416.344982] hub 5-0:1.0: state 7 ports 8 chg 0000 evt 0020
[  416.344994] ehci_hcd 0000:00:1d.7: GetStatus port 5 status 001803 POWER sig=j CSC CONNECT
[  416.345005] hub 5-0:1.0: port 5, status 0501, change 0001, 480 Mb/s
[  416.448335] hub 5-0:1.0: debounce: port 5: total 100ms stable 100ms status 0x501
[  416.499523] ehci_hcd 0000:00:1d.7: port 5 full speed --> companion
[  416.499533] ehci_hcd 0000:00:1d.7: GetStatus port 5 status 003801 POWER OWNER sig=j CONNECT
[  416.499547] usb usb3: wakeup_rh (auto-start)
[  416.499565] hub 5-0:1.0: port 5 not reset yet, waiting 50ms
[  416.503458] ehci_hcd 0000:00:1d.7: irq status c masked 4
[  416.550314] ehci_hcd 0000:00:1d.7: GetStatus port 5 status 003002 POWER OWNER sig=se0 CSC
[  416.550353] hub 3-0:1.0: state 7 ports 2 chg 0000 evt 0002
[  416.550366] uhci_hcd 0000:00:1d.2: port 1 portsc 0093,00
[  416.550379] hub 3-0:1.0: port 1, status 0101, change 0001, 12 Mb/s
[  416.654286] hub 3-0:1.0: debounce: port 1: total 100ms stable 100ms status 0x101
[  416.756259] usb 3-1: new full speed USB device using uhci_hcd and address 2
[  416.876237] usb 3-1: ep0 maxpacket = 8
[  416.899501] usb 3-1: default language 0x0409
[  416.914558] usb 3-1: uevent
[  416.914605] usb 3-1: usb_probe_device
[  416.914612] usb 3-1: configuration #1 chosen from 1 choice
[  416.917621] usb 3-1: adding 3-1:1.0 (config #1, interface 0)
[  416.917683] usb 3-1:1.0: uevent
[  416.917944] usbserial_generic 3-1:1.0: usb_probe_interface
[  416.917950] usbserial_generic 3-1:1.0: usb_probe_interface - got id
[  416.920536] drivers/usb/core/inode.c: creating file '002'
[  416.920736] usb 3-1: New USB device found, idVendor=0801, idProduct=000a
[  416.920742] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[  416.920749] usb 3-1: Product: IntelliStripe 65
[  416.920753] usb 3-1: Manufacturer: MagTek
[  416.920762] hub 5-0:1.0: state 7 ports 8 chg 0000 evt 0020
[  417.604928] usbserial: USB Serial support registered for Magtek 75/Excella USB card reader
[  417.606929] magtek 3-1:1.0: usb_probe_interface
[  417.606929] magtek 3-1:1.0: usb_probe_interface - got id
[  417.606929] magtek 3-1:1.0: Magtek 75/Excella USB card reader converter detected
[  417.606929] drivers/usb/serial/magtek.c: magtek_startup
[  417.606929] uhci_hcd 0000:00:1d.2: reserve dev 2 ep81-INT, period 8, phase 4, 61 us
[  417.606929] drivers/usb/serial/magtek.c: magtek_startup - usb_submit_urb(int urb)
[  417.606929] usb 3-1: Magtek 75/Excella USB card reader converter now attached to ttyUSB0
[  417.607927] usbcore: registered new interface driver magtek
[  417.607927] magtek: v1.01 Amruth Vamadev
[  417.607927] magtek: MAGTEK 75/Excella check USB Chipcard Reader Driver
[  469.065999] ehci_hcd 0000:00:1d.7: irq status c masked 4
[  469.066035] hub 5-0:1.0: state 7 ports 8 chg 0000 evt 0004
[  469.066045] ehci_hcd 0000:00:1d.7: GetStatus port 2 status 001803 POWER sig=j CSC CONNECT
[  469.066056] hub 5-0:1.0: port 2, status 0501, change 0001, 480 Mb/s
[  469.169441] hub 5-0:1.0: debounce: port 2: total 100ms stable 100ms status 0x501
[  469.220697] ehci_hcd 0000:00:1d.7: port 2 high speed
[  469.220708] ehci_hcd 0000:00:1d.7: GetStatus port 2 status 001005 POWER sig=se0 PE CONNECT
[  469.271415] usb 5-2: new high speed USB device using ehci_hcd and address 4
[  469.272398] ehci_hcd 0000:00:1d.7: irq status 8009 masked 1
[  469.276912] ehci_hcd 0000:00:1d.7: irq status 8028 masked 20
[  469.323607] ehci_hcd 0000:00:1d.7: port 2 high speed
[  469.323617] ehci_hcd 0000:00:1d.7: GetStatus port 2 status 001005 POWER sig=se0 PE CONNECT
[  469.374478] ehci_hcd 0000:00:1d.7: irq status 8009 masked 1
[  469.374601] ehci_hcd 0000:00:1d.7: irq status 8028 masked 20
[  469.387239] ehci_hcd 0000:00:1d.7: irq status 8009 masked 1
[  469.387365] ehci_hcd 0000:00:1d.7: irq status 8009 masked 1
[  469.387414] ehci_hcd 0000:00:1d.7: irq status 8009 masked 1
[  469.387460] ehci_hcd 0000:00:1d.7: irq status 8009 masked 1
[  469.387513] usb 5-2: default language 0x0409
[  469.387710] ehci_hcd 0000:00:1d.7: irq status 8009 masked 1
[  469.387836] ehci_hcd 0000:00:1d.7: irq status 8009 masked 1
[  469.387960] ehci_hcd 0000:00:1d.7: irq status 8009 masked 1
[  469.388033] usb 5-2: uevent
[  469.388101] usb 5-2: usb_probe_device
[  469.388108] usb 5-2: configuration #1 chosen from 1 choice
[  469.388211] ehci_hcd 0000:00:1d.7: irq status 8009 masked 1
[  469.388336] usb 5-2: adding 5-2:1.0 (config #1, interface 0)
[  469.388385] usb 5-2:1.0: uevent
[  469.388429] usbserial_generic 5-2:1.0: usb_probe_interface
[  469.388435] usbserial_generic 5-2:1.0: usb_probe_interface - got id
[  469.388454] magtek 5-2:1.0: usb_probe_interface
[  469.388458] magtek 5-2:1.0: usb_probe_interface - got id
[  469.388496] magtek 5-2:1.0: Magtek 75/Excella USB card reader converter detected
[  469.388508] drivers/usb/serial/magtek.c: magtek_startup
[  469.388663] usb 5-2: link qh0-00ff/ded71100 start 0 [1/0 us]
[  469.388719] drivers/usb/serial/magtek.c: magtek_startup - usb_submit_urb(int urb)
[  469.388835] usb 5-2: Magtek 75/Excella USB card reader converter now attached to ttyUSB1
[  469.389651] drivers/usb/core/inode.c: creating file '004'
[  469.389759] usb 5-2: New USB device found, idVendor=0801, idProduct=2231
[  469.389766] usb 5-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[  469.389772] usb 5-2: Product: STX
[  469.389777] usb 5-2: Manufacturer: MagTek
[  469.389781] usb 5-2: SerialNumber: STX001
[  469.393023] ehci_hcd 0000:00:1d.7: irq status c028 masked 20
[  507.575453] ehci_hcd 0000:00:1d.7: irq status 600b masked 3
[  507.575465] ehci_hcd 0000:00:1d.7: devpath 2 ep2in 3strikes
[  507.575470] drivers/usb/serial/magtek.c: magtek_read_int_callback - port 1
[  507.575484] usb 5-2: unlink qh0-00ff/ded71100 start 0 [1/0 us]
[  507.576084] usb 5-2: link qh0-00ff/ded71100 start 0 [1/0 us]
[  507.576548] usb 5-2: unlink qh0-00ff/ded71100 start 0 [1/0 us]
[  507.576548] ehci_hcd 0000:00:1d.7: HC died; cleaning up
[  507.579131] hub 5-0:1.0: state 0 ports 8 chg 0000 evt 0000
[  507.579137] usb 5-2: USB disconnect, address 4
[  507.579141] usb 5-2: unregistering device
[  507.579145] usb 5-2: usb_disable_device nuking all URBs
[  507.579155] usb 5-2: unregistering interface 5-2:1.0
[  507.579261] drivers/usb/serial/magtek.c: magtek_shutdown
[  507.579418] magtek ttyUSB1: Magtek 75/Excella USB card reader converter now disconnected from ttyUSB1
[  507.579450] magtek 5-2:1.0: device disconnected
[  507.579464] usb 5-2:1.0: uevent
[  507.581083] usb 5-2: uevent
[  507.877032] irq 23: nobody cared (try booting with the "irqpoll" option)
[  507.877042] Pid: 0, comm: swapper Not tainted 2.6.26patched #2
[  507.877063]  [<c044c0cc>] __report_bad_irq+0x2e/0x6f
[  507.877078]  [<c044c2e4>] note_interrupt+0x1d7/0x20b
[  507.877089]  [<c044b852>] ? handle_IRQ_event+0x21/0x48
[  507.877103]  [<c044ca0f>] handle_fasteoi_irq+0x8b/0xac
[  507.877114]  [<c044c984>] ? handle_fasteoi_irq+0x0/0xac
[  507.877123]  [<c040598c>] do_IRQ+0xa9/0xd1
[  507.877131]  [<c04025f2>] ? default_idle+0x0/0x42
[  507.877142]  [<c040429b>] common_interrupt+0x23/0x28
[  507.877148]  [<c04025f2>] ? default_idle+0x0/0x42
[  507.877167]  [<c040261f>] ? default_idle+0x2d/0x42
[  507.877178]  [<c040256d>] cpu_idle+0x8b/0x9f
[  507.877187]  [<c0610d62>] rest_init+0x4e/0x50
[  507.877204]  =======================
[  507.877207] handlers:
[  507.877209] [<c057649d>] (usb_hcd_irq+0x0/0x58)
[  507.877217] Disabling IRQ #23


Thanks
Amruth p.v


--- On Mon, 8/25/08, Alan Stern <stern@...land.harvard.edu> wrote:

> From: Alan Stern <stern@...land.harvard.edu>
> Subject: Re: USB Serial device disconnect causes IRQ disable not working after patch
> To: "amruth" <amruth_pv@...oo.com>
> Cc: "Oliver Neukum" <oliver@...kum.org>, linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
> Date: Monday, August 25, 2008, 1:50 PM
> 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]  [<c013fe84>]
> __report_bad_irq+0x2e/0x6f
> > [  185.704529]  [<c0140098>]
> note_interrupt+0x1d3/0x207
> > [  185.704529]  [<c013f60e>] ?
> handle_IRQ_event+0x21/0x48
> > [  185.704529]  [<c01407c0>]
> handle_fasteoi_irq+0x8a/0xaa
> > [  185.704529]  [<c01056f2>] do_IRQ+0x71/0x8b
> > [  185.704529]  [<c010416b>]
> common_interrupt+0x23/0x28
> > [  185.704529]  [<c012007b>] ?
> prof_cpu_mask_write_proc+0xf/0x2f
> > [  185.704529]  [<c0103747>] ?
> sysenter_past_esp+0x38/0x91
> > [  185.704529]  =======================
> > [  185.704529] handlers:
> > [  185.704529] [<c03428d9>]
> (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
> 
> --
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