https://bugzilla.kernel.org/show_bug.cgi?id=20382
Summary: PCMCIA D-Link (O2-Micro) USB 2.0 adapter - drives not
mounting - mount freezes
Product: Drivers
Version: 2.5
Kernel Version: 2.6.32 and higher
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: high
Priority: P1
Component: PCMCIA
AssignedTo: linux-pcmcia@lists.infradead.org
ReportedBy: david.bluec...@gmail.com
Regression: No
Created an attachment (id=33662)
--> (https://bugzilla.kernel.org/attachment.cgi?id=33662)
HardInfo HTML report
I have a laptop with USB1 only ports, so I installed a D-link PCMCIA adapter
with 2xUSB2.0 ports. Everything went well until kernel 2.6.31 inclusive.
When I upgraded to 2.6.32, after the upgrade I could not mount any USB2.0 drive
via the PCMCIA adapter. Mount operation froze and I could not even kill the
mount process. The problem happens with any USB2.0 drive, from 1.5TB external
hard drive to simple USB2.0 flash drives.
Upgrading to newer versions has not helped. I tried from 2.6.32.24 to 2.6.35.7
with no success, so I tried to discover what happened.
After a lot of investigation, I found the problem in the
drivers/pcmcia/o2micro.h file. That file was modified from version 2.6.31 to
2.6.32, adding the device number 6933 to the list of "old bridges" which should
have read prefetch and write bursting disabled:
(from o2micro.h)
/*
* older bridges have problems with both read prefetch and
write
* bursting depending on the combination of the chipset, bridge
* and the cardbus card. so disable them to be on the safe
side.
*/
case PCI_DEVICE_ID_O2_6729:
case PCI_DEVICE_ID_O2_6730:
case PCI_DEVICE_ID_O2_6812:
case PCI_DEVICE_ID_O2_6832:
case PCI_DEVICE_ID_O2_6836:
This caused the problem ---> case PCI_DEVICE_ID_O2_6933:
Precisely, my device is the 6933 and it began to give me trouble when that line
was added. If I remove that line and recompile the kernel, everything goes well
in kernels 2.6.32.24 and 2.6.35.7, for example.
>From my lspci, you can see that my device is OZ6933 (6933 in the previous
list):
00:13.1 CardBus bridge: O2 Micro, Inc. OZ6933/711E1 CardBus/SmartCardBus
Controller (rev 01)
Subsystem: Acer Incorporated [ALI] Device 1010
Flags: bus master, stepping, slow devsel, latency 168, IRQ 11
Memory at 20001000 (32-bit, non-prefetchable) [size=4K]
Bus: primary=00, secondary=06, subordinate=09, sec-latency=176
Memory window 0: 18000000-1bfff000 (prefetchable)
Memory window 1: 1c000000-1ffff000
I/O window 0: 00001c00-00001cff
I/O window 1: 00002000-000020ff
16-bit legacy interface ports at 0001
Kernel driver in use: yenta_cardbus
Kernel modules: yenta_socket
I have compiled a very minimal 2.6.32.24 kernel to perform the tests with a
minumin of interference from other modules.
(extract from dmesg booting 2.6.32.24, at the beginning you can see how the
Yenta O2 has disabled read prefetch and write burst, that's what causes the
problem)
yenta_cardbus 0000:00:13.0: CardBus bridge found [1025:1010]
yenta_cardbus 0000:00:13.0: O2: res at 0x94/0xD4: ea/00
yenta_cardbus 0000:00:13.0: Yenta O2: old bridge, disabling read prefetch/write
burst
yenta_cardbus 0000:00:13.0: ISA IRQ mask 0x06b8, PCI irq 11
yenta_cardbus 0000:00:13.0: Socket status: 30000820
yenta_cardbus 0000:00:13.1: CardBus bridge found [1025:1010]
yenta_cardbus 0000:00:13.1: ISA IRQ mask 0x06b8, PCI irq 11
yenta_cardbus 0000:00:13.1: Socket status: 30000006
pcmcia_socket pcmcia_socket0: pccard: CardBus card inserted into slot 0
pci 0000:02:00.0: reg 10 32bit mmio: [0x000000-0x000fff]
pci 0000:02:00.0: supports D1 D2
pci 0000:02:00.0: PME# supported from D0 D1 D2 D3hot
pci 0000:02:00.0: PME# disabled
pci 0000:02:00.1: reg 10 32bit mmio: [0x000000-0x000fff]
pci 0000:02:00.1: supports D1 D2
pci 0000:02:00.1: PME# supported from D0 D1 D2 D3hot
pci 0000:02:00.1: PME# disabled
pci 0000:02:00.2: reg 10 32bit mmio: [0x000000-0x0000ff]
pci 0000:02:00.2: supports D1 D2
pci 0000:02:00.2: PME# supported from D0 D1 D2 D3hot
pci 0000:02:00.2: PME# disabled
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
Initializing USB Mass Storage driver...
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
ehci_hcd: block sizes: qh 60 qtd 96 itd 160 sitd 96
ehci_hcd 0000:02:00.2: enabling device (0000 -> 0002)
ehci_hcd 0000:02:00.2: EHCI Host Controller
drivers/usb/core/inode.c: creating file 'devices'
drivers/usb/core/inode.c: creating file '001'
ehci_hcd 0000:02:00.2: new USB bus registered, assigned bus number 1
ehci_hcd 0000:02:00.2: reset hcs_params 0x2395 dbg=0 cc=2 pcc=3 ports=5
ehci_hcd 0000:02:00.2: reset portroute 1 0 1 0 0
ehci_hcd 0000:02:00.2: reset hcc_params e806 thresh 0 uframes 256/512/1024 park
ehci_hcd 0000:02:00.2: park 0
ehci_hcd 0000:02:00.2: reset command 080b02 park=3 ithresh=8 period=1024 Reset
HALT
ehci_hcd 0000:02:00.2: Enabling legacy PCI PM
ehci_hcd 0000:02:00.2: ...powerup ports...
ehci_hcd 0000:02:00.2: MWI active
ehci_hcd 0000:02:00.2: irq 11, io mem 0x14002000
ehci_hcd 0000:02:00.2: reset command 080b02 park=3 ithresh=8 period=1024 Reset
HALT
ehci_hcd 0000:02:00.2: init command 010009 (park)=0 ithresh=1 period=256 RUN
ehci_hcd 0000:02:00.2: USB 2.0 started, EHCI 1.00
usb usb1: default language 0x0409
usb usb1: udev 1, busnum 1, minor = 0
usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
usb usb1: Product: EHCI Host Controller
usb usb1: Manufacturer: Linux 2.6.32.24-PRUEBAS ehci_hcd
usb usb1: SerialNumber: 0000:02:00.2
usb usb1: usb_probe_device
usb usb1: configuration #1 chosen from 1 choice
usb usb1: adding 1-0:1.0 (config #1, interface 0)
hub 1-0:1.0: usb_probe_interface
hub 1-0:1.0: usb_probe_interface - got id
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 5 ports detected
hub 1-0:1.0: standalone hub
hub 1-0:1.0: individual port power switching
hub 1-0:1.0: individual port over-current protection
hub 1-0:1.0: power on to power good time: 20ms
hub 1-0:1.0: local power source is good
hub 1-0:1.0: enabling power on all ports
drivers/usb/core/inode.c: creating file '001'
ehci_hcd 0000:02:00.2: GetStatus port 2 status 001803 POWER sig=j CSC CONNECT
hub 1-0:1.0: port 2: status 0501 change 0001
hub 1-0:1.0: state 7 ports 5 chg 0004 evt 0000
hub 1-0:1.0: port 2, status 0501, change 0000, 480 Mb/s
ehci_hcd 0000:02:00.2: port 2 high speed
ehci_hcd 0000:02:00.2: GetStatus port 2 status 001005 POWER sig=se0 PE CONNECT
usb 1-2: new high speed USB device using ehci_hcd and address 2
ehci_hcd 0000:02:00.2: port 2 high speed
ehci_hcd 0000:02:00.2: GetStatus port 2 status 001005 POWER sig=se0 PE CONNECT
usb 1-2: default language 0x0409
usb 1-2: udev 2, busnum 1, minor = 1
usb 1-2: New USB device found, idVendor=058f, idProduct=6332
usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 1-2: Product: USB Reader
usb 1-2: Manufacturer:
usb 1-2: SerialNumber: 058F118111B
usb 1-2: usb_probe_device
usb 1-2: configuration #1 chosen from 1 choice
usb 1-2: adding 1-2:1.0 (config #1, interface 0)
usb-storage 1-2:1.0: usb_probe_interface
usb-storage 1-2:1.0: usb_probe_interface - got id
scsi0 : SCSI emulation for USB Mass Storage devices
usb-storage: device found at 2
usb-storage: waiting for device to settle before scanning
drivers/usb/core/inode.c: creating file '002'
scsi 0:0:0:0: Direct-Access Generic USB SD Reader 1.00 PQ: 0 ANSI: 0
scsi 0:0:0:1: Direct-Access Generic USB MS Reader 1.03 PQ: 0 ANSI: 0
sd 0:0:0:1: [sdb] Attached SCSI removable disk
sd 0:0:0:0: [sda] 1012480 512-byte logical blocks: (518 MB/494 MiB)
sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] Mode Sense: 03 00 00 00
sd 0:0:0:0: [sda] Assuming drive cache: write through
usb-storage: device scan complete
sd 0:0:0:0: [sda] Assuming drive cache: write through
sda: sda1
sd 0:0:0:0: [sda] Assuming drive cache: write through
sd 0:0:0:0: [sda] Attached SCSI removable disk
kjournald starting. Commit interval 5 seconds
ehci_hcd 0000:02:00.2: IAA with nothing to reclaim?
ehci_hcd 0000:02:00.2: port 2 high speed
ehci_hcd 0000:02:00.2: GetStatus port 2 status 001005 POWER sig=se0 PE CONNECT
usb 1-2: reset high speed USB device using ehci_hcd and address 2
ehci_hcd 0000:02:00.2: port 2 high speed
ehci_hcd 0000:02:00.2: GetStatus port 2 status 001005 POWER sig=se0 PE CONNECT
ehci_hcd 0000:02:00.2: port 2 high speed
ehci_hcd 0000:02:00.2: GetStatus port 2 status 001005 POWER sig=se0 PE CONNECT
usb 1-2: reset high speed USB device using ehci_hcd and address 2
ehci_hcd 0000:02:00.2: port 2 high speed
ehci_hcd 0000:02:00.2: GetStatus port 2 status 001005 POWER sig=se0 PE CONNECT
Here it keeps trying, to no avail. The only workarounds that I found initially
were mounting only in read only mode or mounting in read/write but only in
USB1.0 mode (using ohci_hcd instead of ehci_hcd module). Neither of these
workarounds were satisfactory for me.
The solution for me was I removing that "offending" line from o2micro.h, then
the USB2.0 drives are correctly mounted as in 2.6.31 and below, and the dmesg
file is like the following:
(extract from dmesg booting 2.6.32.24 with the corrected o2micro.h file, at the
beginning you can see that now the Yenta O2 has ENABLED read prefetch and write
burst, and now drives mount correctly)
yenta_cardbus 0000:00:13.0: CardBus bridge found [1025:1010]
yenta_cardbus 0000:00:13.0: O2: res at 0x94/0xD4: ea/00
yenta_cardbus 0000:00:13.0: O2: enabling read prefetch/write burst
yenta_cardbus 0000:00:13.0: ISA IRQ mask 0x06b8, PCI irq 11
yenta_cardbus 0000:00:13.0: Socket status: 30000820
yenta_cardbus 0000:00:13.1: CardBus bridge found [1025:1010]
yenta_cardbus 0000:00:13.1: ISA IRQ mask 0x06b8, PCI irq 11
yenta_cardbus 0000:00:13.1: Socket status: 30000006
pcmcia_socket pcmcia_socket0: pccard: CardBus card inserted into slot 0
pci 0000:02:00.0: reg 10 32bit mmio: [0x000000-0x000fff]
pci 0000:02:00.0: supports D1 D2
pci 0000:02:00.0: PME# supported from D0 D1 D2 D3hot
pci 0000:02:00.0: PME# disabled
pci 0000:02:00.1: reg 10 32bit mmio: [0x000000-0x000fff]
pci 0000:02:00.1: supports D1 D2
pci 0000:02:00.1: PME# supported from D0 D1 D2 D3hot
pci 0000:02:00.1: PME# disabled
pci 0000:02:00.2: reg 10 32bit mmio: [0x000000-0x0000ff]
pci 0000:02:00.2: supports D1 D2
pci 0000:02:00.2: PME# supported from D0 D1 D2 D3hot
pci 0000:02:00.2: PME# disabled
SCSI subsystem initialized
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
Initializing USB Mass Storage driver...
usbcore: registered new interface driver usb-storage
USB Mass Storage support registered.
ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
ehci_hcd: block sizes: qh 60 qtd 96 itd 160 sitd 96
ehci_hcd 0000:02:00.2: enabling device (0000 -> 0002)
ehci_hcd 0000:02:00.2: EHCI Host Controller
drivers/usb/core/inode.c: creating file 'devices'
drivers/usb/core/inode.c: creating file '001'
ehci_hcd 0000:02:00.2: new USB bus registered, assigned bus number 1
ehci_hcd 0000:02:00.2: reset hcs_params 0x2395 dbg=0 cc=2 pcc=3 ports=5
ehci_hcd 0000:02:00.2: reset portroute 1 0 1 0 0
ehci_hcd 0000:02:00.2: reset hcc_params e806 thresh 0 uframes 256/512/1024 park
ehci_hcd 0000:02:00.2: park 0
ehci_hcd 0000:02:00.2: reset command 080b02 park=3 ithresh=8 period=1024 Reset
HALT
ehci_hcd 0000:02:00.2: Enabling legacy PCI PM
ehci_hcd 0000:02:00.2: ...powerup ports...
ehci_hcd 0000:02:00.2: MWI active
ehci_hcd 0000:02:00.2: irq 11, io mem 0x14002000
ehci_hcd 0000:02:00.2: reset command 080b02 park=3 ithresh=8 period=1024 Reset
HALT
ehci_hcd 0000:02:00.2: init command 010009 (park)=0 ithresh=1 period=256 RUN
ehci_hcd 0000:02:00.2: USB 2.0 started, EHCI 1.00
usb usb1: default language 0x0409
usb usb1: udev 1, busnum 1, minor = 0
usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
usb usb1: Product: EHCI Host Controller
usb usb1: Manufacturer: Linux 2.6.32.24-PRUEBAS ehci_hcd
usb usb1: SerialNumber: 0000:02:00.2
usb usb1: usb_probe_device
usb usb1: configuration #1 chosen from 1 choice
usb usb1: adding 1-0:1.0 (config #1, interface 0)
hub 1-0:1.0: usb_probe_interface
hub 1-0:1.0: usb_probe_interface - got id
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 5 ports detected
hub 1-0:1.0: standalone hub
hub 1-0:1.0: individual port power switching
hub 1-0:1.0: individual port over-current protection
hub 1-0:1.0: power on to power good time: 20ms
hub 1-0:1.0: local power source is good
hub 1-0:1.0: enabling power on all ports
drivers/usb/core/inode.c: creating file '001'
ehci_hcd 0000:02:00.2: GetStatus port 2 status 001803 POWER sig=j CSC CONNECT
hub 1-0:1.0: port 2: status 0501 change 0001
hub 1-0:1.0: state 7 ports 5 chg 0004 evt 0000
hub 1-0:1.0: port 2, status 0501, change 0000, 480 Mb/s
ehci_hcd 0000:02:00.2: port 2 high speed
ehci_hcd 0000:02:00.2: GetStatus port 2 status 001005 POWER sig=se0 PE CONNECT
usb 1-2: new high speed USB device using ehci_hcd and address 2
ehci_hcd 0000:02:00.2: port 2 high speed
ehci_hcd 0000:02:00.2: GetStatus port 2 status 001005 POWER sig=se0 PE CONNECT
usb 1-2: default language 0x0409
usb 1-2: udev 2, busnum 1, minor = 1
usb 1-2: New USB device found, idVendor=058f, idProduct=6332
usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 1-2: Product: USB Reader
usb 1-2: Manufacturer:
usb 1-2: SerialNumber: 058F118111B
usb 1-2: usb_probe_device
usb 1-2: configuration #1 chosen from 1 choice
usb 1-2: adding 1-2:1.0 (config #1, interface 0)
usb-storage 1-2:1.0: usb_probe_interface
usb-storage 1-2:1.0: usb_probe_interface - got id
scsi0 : SCSI emulation for USB Mass Storage devices
usb-storage: device found at 2
usb-storage: waiting for device to settle before scanning
drivers/usb/core/inode.c: creating file '002'
scsi 0:0:0:0: Direct-Access Generic USB SD Reader 1.00 PQ: 0 ANSI: 0
scsi 0:0:0:1: Direct-Access Generic USB MS Reader 1.03 PQ: 0 ANSI: 0
sd 0:0:0:0: [sda] 1012480 512-byte logical blocks: (518 MB/494 MiB)
sd 0:0:0:1: [sdb] Attached SCSI removable disk
sd 0:0:0:0: [sda] Write Protect is off
sd 0:0:0:0: [sda] Mode Sense: 03 00 00 00
sd 0:0:0:0: [sda] Assuming drive cache: write through
usb-storage: device scan complete
sd 0:0:0:0: [sda] Assuming drive cache: write through
sda: sda1
sd 0:0:0:0: [sda] Assuming drive cache: write through
sd 0:0:0:0: [sda] Attached SCSI removable disk
kjournald starting. Commit interval 5 seconds
EXT3 FS on sda1, internal journal
EXT3-fs: recovery complete.
EXT3-fs: mounted filesystem with writeback data mode.
I have attached my hardinfo HTML report, got from my currently working 2.6.31
kernel, so you can have more information about the hardware in my laptop. It's
an Acer Travelmate 524TE.
I hope that all this information can help the developers to find a proper and
permanent fix in future kernel versions.
Thank you in advance and best regards.
David Bluecame.
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