usb high speed device hang issue

[abdulhussain]

Hi,

We are using IMX6D based custom board. When we frequently plug and remove usb pendrive in USB host port, we are getting error message as mentioned below and thereafter usb pendrive is not detecting.

[   38.600513] usb 1-1: new high-speed USB device number 2 using ci_hdrc

[   38.632897] usb 1-1: New USB device found, idVendor=03f0, idProduct=5a07

[   38.639622] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3

[   38.646816] usb 1-1: Product: v220w

[   38.650312] usb 1-1: Manufacturer: HP

[   38.653997] usb 1-1: SerialNumber: 0410210000013931

[   39.470600] usb 1-1: USB disconnect, device number 2

[   40.340515] usb 1-1: new high-speed USB device number 3 using ci_hdrc

[   40.372894] usb 1-1: New USB device found, idVendor=03f0, idProduct=5a07

[   40.379617] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3

[   40.386807] usb 1-1: Product: v220w

[   40.390304] usb 1-1: Manufacturer: HP

[   40.393988] usb 1-1: SerialNumber: 0410210000013931

[   40.463327] usb 1-1: USB disconnect, device number 3

[   41.180524] usb 1-1: new high-speed USB device number 4 using ci_hdrc

[   41.306894] usb 1-1: device descriptor read/all, error -71

If we connect low speed device like usb keyword, it is detecting.

We are using 3.10.17 yocto bsp.

Any advice will be helpful,

Abdul Hussain

[sumankumar]

Hi Igor and Abdul,

The issue still seems to persist on kernel_imx 4.1.15 Series 4800.

The USB host controller 1 of imx6 is connected to USB hub which is connected to USB modem device.

If i perform fast plug/unplug the USB hub does not enumerated modem device.

usb 1-1: device not accepting address 5, error -110

usb usb1-port1: unable to enumerate USB device

Success case: (dmesgworking - logs attached)

/sys/kernel/debug/usb # lsusb

Bus 001 Device 002: ID 0424:2512

Bus 001 Device 001: ID 1d6b:0002

Bus 001 Device 004: ID 1519:0443

Failure case: (dmesghaveissue - logs attached)

/sys/kernel/debug/usb # lsusb

Bus 001 Device 001: ID 1d6b:0002

Success dmesg:

Ov5642_mipi probe called wrw

usb 1-1: new high-speed USB device number 2 using ci_hdrc

ov5640_mipi_camera_powerdown: powerdown=0, power_gp=0xaa

usb 1-1: udev 2, busnum 1, minor = 1

hub 1-1:1.0: USB hub found

hub 1-1:1.0: 2 ports detected

hub 1-1:1.0: enabling power on all ports

ov5640_reset(mipi): reset released

hub 1-1:1.0: SUMAN: -ENONET: synchronous unlink

hub 1-1:1.0: SUMAN: -ECONNRESET: Async unlink

hub 1-1:1.0: SUMAN: -ESHUTDOWN: hardware going away

ov5640_mipi_camera_powerdown: powerdown=0, power_gp=0xaa

ov5640_read_reg(mipi):reg=300a,val=56

ov5640_read_reg(mipi):reg=300b,val=40

ov5640_read_reg(mipi):reg=3000,val=30

ov5640_read_reg(mipi):reg=3004,val=cf

ov5640_write_reg(mipi):reg=3004,val=ef

hub 1-0:1.0: SUMAN: -ENONET: synchronous unlink

hub 1-0:1.0: SUMAN: -ECONNRESET: Async unlink

hub 1-0:1.0: SUMAN: -ESHUTDOWN: hardware going away

Failure: (dmesghaveissue)

Ov5642_mipi probe called wrw

usb 1-1: new high-speed USB device number 2 using ci_hdrc

ov5640_mipi_camera_powerdown: powerdown=0, power_gp=0xaa

ov5640_reset(mipi): reset released

usb 1-1: new high-speed USB device number 3 using ci_hdrc

ov5640_mipi_camera_powerdown: powerdown=0, power_gp=0xaa

ov5640_read_reg(mipi):reg=300a,val=56

[igorpadykov]

Hi Abdul

seems it is necessary to safely remove device

(commands may depend on distros) using unmount.

Ubuntu has Safely Remove option. After unmounting one can try

udisks --detach /dev/sdX

Best regards

igor

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[abdulhussain]

Hi igor,

I have not loaded any storage modules. This issue is happening during enumeration itself.

Regards,

Abdul Hussain.

[igorpadykov]

Hi Abdul

during enumeration it is not

allowed to plug and remove usb pendrive.

Best regards

igor

[abdulhussain]

Hi Igor,

But in our use case, user may accidentally remove the usb pendrive during enumeration. So usb driver should not stop enumeraing the device after this error scenario.

We observed like the same error is happening in externally powered usb hub, but driver is automatically recovering and able to detect the device after that.

One more observation is like if i build the usbcore, ehci-hcd and chipidea driver into the loadable module, during error scenario if i rmmod the chipidea driver and load the chipidea module again, high speed usb device detection is happening.

Is  there any document which will give overview of usb driver flow?

Regards,

Abdul Hussain

[igorpadykov]

Hi Abdul

one can look at Linux Manual in

L3.10.17_1.0.0_LINUX_DOCS

~igor

[abdulhussain · Accepted solution]

Hi Igor,

The below patch solves this fast plug and unplug usb issue,

linux-2.6-imx.git - Freescale i.MX Linux Tree

Regards,

Abdul Hussain

[sumankumar]

Hi Igor and Abdul,

The issue still seems to persist on kernel_imx 4.1.15 Series 4800.

The USB host controller 1 of imx6 is connected to USB hub which is connected to USB modem device.

If i perform fast plug/unplug the USB hub does not enumerated modem device.

usb 1-1: device not accepting address 5, error -110

usb usb1-port1: unable to enumerate USB device

Success case:

/sys/kernel/debug/usb # lsusb

Bus 001 Device 002: ID 0424:2512

Bus 001 Device 001: ID 1d6b:0002

Bus 001 Device 004: ID 1519:0443

Failure case:

/sys/kernel/debug/usb # lsusb

Bus 001 Device 001: ID 1d6b:0002

Success dmesg:

Ov5642_mipi probe called wrw

usb 1-1: new high-speed USB device number 2 using ci_hdrc

ov5640_mipi_camera_powerdown: powerdown=0, power_gp=0xaa

usb 1-1: udev 2, busnum 1, minor = 1

hub 1-1:1.0: USB hub found

hub 1-1:1.0: 2 ports detected

hub 1-1:1.0: enabling power on all ports

ov5640_reset(mipi): reset released

hub 1-1:1.0: SUMAN: -ENONET: synchronous unlink

hub 1-1:1.0: SUMAN: -ECONNRESET: Async unlink

hub 1-1:1.0: SUMAN: -ESHUTDOWN: hardware going away

ov5640_mipi_camera_powerdown: powerdown=0, power_gp=0xaa

ov5640_read_reg(mipi):reg=300a,val=56

ov5640_read_reg(mipi):reg=300b,val=40

ov5640_read_reg(mipi):reg=3000,val=30

ov5640_read_reg(mipi):reg=3004,val=cf

ov5640_write_reg(mipi):reg=3004,val=ef

hub 1-0:1.0: SUMAN: -ENONET: synchronous unlink

hub 1-0:1.0: SUMAN: -ECONNRESET: Async unlink

hub 1-0:1.0: SUMAN: -ESHUTDOWN: hardware going away

Failure: (dmesghaveissue)

Ov5642_mipi probe called wrw

usb 1-1: new high-speed USB device number 2 using ci_hdrc

ov5640_mipi_camera_powerdown: powerdown=0, power_gp=0xaa

ov5640_reset(mipi): reset released

usb 1-1: new high-speed USB device number 3 using ci_hdrc

ov5640_mipi_camera_powerdown: powerdown=0, power_gp=0xaa

ov5640_read_reg(mipi):reg=300a,val=56