Hi Guys:
I'm using Lenovo K800 now, it use the same Medfield platform like Moto Razr i,
It supports USB OTG, but doesn't support usb-storage for external usb disk
Lenovo doesn't provide K800's kernel source,
so I compiled some USB related kernel modules from Moto Razr i 3.0.8 kernel source
these are what I get:
scsi_mod.ko
sd_mod.ko
usb-storage.ko
1.
I can load these modules in Lenovo K800, I connect my external usb disk (high speed)
to Lenovo K800 through a high speed USB hub (with power supply), usb disk can be recognized
if I run "dd" command to test reading usb disk, it will fail after reading for various seconds,
in these seconds data can be readed, then "I/O error" occurs, then USB disk reset
2.
If I connect external usb disk (high speed) to K800 through a full speed USB hub (also with power supply),
so usb disk will work in full speed mode, speed is quiet slow, but I can read through the whole usb disk
without any error
3.
If I connect a full speed external usb disk to K800 through a high speed USB hub,
I still get "I/O error" message like situation 1
the dmesg output like this:
---------------------------------------------------------------------------------------------------------------
<6>[ 303.190553] usb 1-1: new high speed USB device number 2 using penwell_otg
<6>[ 303.343537] hub 1-1:1.0: USB hub found
<6>[ 303.343937] hub 1-1:1.0: 4 ports detected
<4>[ 303.390899] penwell_otg 0000:00:02.3: ERR in HNP polling = -32, stop HNP polling
<6>[ 307.493811] usb_otg_suspend OTG HNP update suspend
<4>[ 317.369781] intel_scu_watchdog: Expected SW WDT warning irq received
<4>[ 317.369833] intel_scu_watchdog: interrupt tasklet body start
<3>[ 317.369979] intel_scu_watchdog: watchdog_keepalive
<6>[ 363.119997] intel_mdf_battery msic_battery: vbus_volt:5323
<6>[ 363.121088] intel_mdf_battery msic_battery: vbatt:3880000 temp:200
<7>[ 363.125085] max17042_get_property: VFSOC=61
<7>[ 363.125110] max17042_get_property: SOC= 62
<7>[ 363.126709] max17042_get_property: VFSOC=61
<7>[ 363.126726] max17042_get_property: SOC= 62
<7>[ 363.136076] max17042_get_property: VFSOC=61
<7>[ 363.136101] max17042_get_property: SOC= 62
<6>[ 423.277567] intel_mdf_battery msic_battery: vbus_volt:5323
<6>[ 423.278665] intel_mdf_battery msic_battery: vbatt:3881875 temp:200
<7>[ 423.281530] max17042_get_property: VFSOC=61
<7>[ 423.281555] max17042_get_property: SOC= 62
<7>[ 423.283265] max17042_get_property: VFSOC=61
<7>[ 423.283282] max17042_get_property: SOC= 62
<7>[ 423.291069] max17042_get_property: VFSOC=61
<7>[ 423.291095] max17042_get_property: SOC= 62
.....
<7>[ 2535.986746] usb-storage: Command READ_10 (10 bytes)
<7>[ 2535.986757] usb-storage: 28 00 00 30 a4 e0 00 00 f0 00
<7>[ 2535.986819] usb-storage: Bulk Command S 0x43425355 T 0x616c L 122880 F 128 Trg 0 LUN 0 CL 10
<7>[ 2535.986834] usb-storage: usb_stor_bulk_transfer_buf: xfer 31 bytes
<7>[ 2535.987185] usb-storage: Status code 0; transferred 31/31
<7>[ 2535.987198] usb-storage: -- transfer complete
<7>[ 2535.987209] usb-storage: Bulk command transfer result=0
<7>[ 2535.987224] usb-storage: usb_stor_bulk_transfer_sglist: xfer 122880 bytes, 29 entries
<7>[ 2536.025373] usb-storage: Status code -71; transferred 62976/122880
<7>[ 2536.025387] usb-storage: -- unknown error
<7>[ 2536.025393] usb-storage: Bulk data transfer result 0x4
<7>[ 2536.025397] usb-storage: -- transport indicates error, resetting
<7>[ 2536.025409] usb-storage: usb_stor_pre_reset
<3>[ 2536.057289] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.089281] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.126276] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.163273] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.200287] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.205573] hub 1-1:1.0: Cannot enable port 4. Maybe the USB cable is bad?
<3>[ 2536.244297] hub 1-1:1.0: cannot disable port 4 (err = -71)
<3>[ 2536.281293] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.318302] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.355284] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.392280] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.429277] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.434557] hub 1-1:1.0: Cannot enable port 4. Maybe the USB cable is bad?
<3>[ 2536.473263] hub 1-1:1.0: cannot disable port 4 (err = -71)
<3>[ 2536.510288] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.547259] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.584280] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.621280] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.658268] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.663562] hub 1-1:1.0: Cannot enable port 4. Maybe the USB cable is bad?
<3>[ 2536.702386] hub 1-1:1.0: cannot disable port 4 (err = -71)
<3>[ 2536.739275] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.776264] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.813273] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.850261] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.887254] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.892529] hub 1-1:1.0: Cannot enable port 4. Maybe the USB cable is bad?
<3>[ 2536.931288] hub 1-1:1.0: cannot disable port 4 (err = -71)
<3>[ 2536.968258] hub 1-1:1.0: cannot disable port 4 (err = -71)
<7>[ 2536.973734] usb-storage: usb_stor_post_reset
<7>[ 2536.973746] usb-storage: usb_reset_device returns -19
<7>[ 2536.973755] usb-storage: usb_stor_Bulk_reset called
<7>[ 2536.973765] usb-storage: usb_stor_control_msg: rq=ff rqtype=21 value=0000 index=00 len=0
<7>[ 2536.973774] usb-storage: Soft reset failed: -19
<7>[ 2536.973781] usb-storage: scsi cmd done, result=0x70000
<7>[ 2536.973829] usb-storage: queuecommand_lck called
<7>[ 2536.973846] usb-storage: *** thread sleeping.
<7>[ 2536.973853] usb-storage: *** thread awakened.
<7>[ 2536.973863] usb-storage: Command READ_10 (10 bytes)
<7>[ 2536.973867] usb-storage: 28 00 00 30 a4 e0 00 00 f0 00
<7>[ 2536.973892] usb-storage: Bulk Command S 0x43425355 T 0x616d L 122880 F 128 Trg 0 LUN 0 CL 10
<7>[ 2536.973898] usb-storage: usb_stor_bulk_transfer_buf: xfer 31 bytes
<7>[ 2536.973904] usb-storage: Status code -19; transferred 31/31
<7>[ 2536.973908] usb-storage: -- unknown error
<7>[ 2536.973913] usb-storage: Bulk command transfer result=4
<7>[ 2536.973917] usb-storage: -- transport indicates error, resetting
<7>[ 2536.973923] usb-storage: unable to lock device for reset: -19
<7>[ 2536.973928] usb-storage: usb_stor_Bulk_reset called
<7>[ 2536.973935] usb-storage: usb_stor_control_msg: rq=ff rqtype=21 value=0000 index=00 len=0
<7>[ 2536.973940] usb-storage: Soft reset failed: -19
<7>[ 2536.973945] usb-storage: scsi cmd done, result=0x70000
<7>[ 2536.973974] usb-storage: queuecommand_lck called
<7>[ 2536.973985] usb-storage: *** thread sleeping.
<7>[ 2536.973989] usb-storage: *** thread awakened.
<7>[ 2536.973995] usb-storage: Command READ_10 (10 bytes)
<7>[ 2536.973999] usb-storage: 28 00 00 30 a4 e0 00 00 f0 00
<7>[ 2536.974022] usb-storage: Bulk Command S 0x43425355 T 0x616e L 122880 F 128 Trg 0 LUN 0 CL 10
<7>[ 2536.974028] usb-storage: usb_stor_bulk_transfer_buf: xfer 31 bytes
<7>[ 2536.974034] usb-storage: Status code -19; transferred 31/31
<7>[ 2536.974038] usb-storage: -- unknown error
<7>[ 2536.974042] usb-storage: Bulk command transfer result=4
<7>[ 2536.974047] usb-storage: -- transport indicates error, resetting
<7>[ 2536.974052] usb-storage: unable to lock device for reset: -19
<7>[ 2536.974057] usb-storage: usb_stor_Bulk_reset called
<7>[ 2536.974064] usb-storage: usb_stor_control_msg: rq=ff rqtype=21 value=0000 index=00 len=0
<7>[ 2536.974069] usb-storage: Soft reset failed: -19
<7>[ 2536.974074] usb-storage: scsi cmd done, result=0x70000
<7>[ 2536.974097] usb-storage: queuecommand_lck called
<7>[ 2536.974108] usb-storage: *** thread sleeping.
<7>[ 2536.974114] usb-storage: *** thread awakened.
<7>[ 2536.974121] usb-storage: Command READ_10 (10 bytes)
<7>[ 2536.974125] usb-storage: 28 00 00 30 a4 e0 00 00 f0 00
<7>[ 2536.974153] usb-storage: Bulk Command S 0x43425355 T 0x616f L 122880 F 128 Trg 0 LUN 0 CL 10
<7>[ 2536.974160] usb-storage: usb_stor_bulk_transfer_buf: xfer 31 bytes
<7>[ 2536.974167] usb-storage: Status code -19; transferred 31/31
<7>[ 2536.974172] usb-storage: -- unknown error
<7>[ 2536.974177] usb-storage: Bulk command transfer result=4
<7>[ 2536.974182] usb-storage: -- transport indicates error, resetting
<7>[ 2536.974188] usb-storage: unable to lock device for reset: -19
<7>[ 2536.974194] usb-storage: usb_stor_Bulk_reset called
<7>[ 2536.974201] usb-storage: usb_stor_control_msg: rq=ff rqtype=21 value=0000 index=00 len=0
<7>[ 2536.974208] usb-storage: Soft reset failed: -19
<7>[ 2536.974214] usb-storage: scsi cmd done, result=0x70000
<7>[ 2536.974241] usb-storage: queuecommand_lck called
<7>[ 2536.974256] usb-storage: *** thread sleeping.
<7>[ 2536.974261] usb-storage: *** thread awakened.
<7>[ 2536.974267] usb-storage: Command READ_10 (10 bytes)
<7>[ 2536.974271] usb-storage: 28 00 00 30 a4 e0 00 00 f0 00
<7>[ 2536.974294] usb-storage: Bulk Command S 0x43425355 T 0x6170 L 122880 F 128 Trg 0 LUN 0 CL 10
<7>[ 2536.974300] usb-storage: usb_stor_bulk_transfer_buf: xfer 31 bytes
<7>[ 2536.974306] usb-storage: Status code -19; transferred 31/31
<7>[ 2536.974310] usb-storage: -- unknown error
<7>[ 2536.974314] usb-storage: Bulk command transfer result=4
<7>[ 2536.974318] usb-storage: -- transport indicates error, resetting
<7>[ 2536.974323] usb-storage: unable to lock device for reset: -19
<7>[ 2536.974329] usb-storage: usb_stor_Bulk_reset called
<7>[ 2536.974335] usb-storage: usb_stor_control_msg: rq=ff rqtype=21 value=0000 index=00 len=0
<7>[ 2536.974340] usb-storage: Soft reset failed: -19
<7>[ 2536.974345] usb-storage: scsi cmd done, result=0x70000
<7>[ 2536.974368] usb-storage: queuecommand_lck called
<7>[ 2536.974378] usb-storage: *** thread sleeping.
<7>[ 2536.974383] usb-storage: *** thread awakened.
---------------------------------------------------------------------------------------------------------------
Is there any limitation to Medfield's penwell OTG? Does this also happens to Razr i?
Is this related to USB OTG's HNP polling?
Really thanks
Uranus Zhou
I'm using Lenovo K800 now, it use the same Medfield platform like Moto Razr i,
It supports USB OTG, but doesn't support usb-storage for external usb disk
Lenovo doesn't provide K800's kernel source,
so I compiled some USB related kernel modules from Moto Razr i 3.0.8 kernel source
these are what I get:
scsi_mod.ko
sd_mod.ko
usb-storage.ko
1.
I can load these modules in Lenovo K800, I connect my external usb disk (high speed)
to Lenovo K800 through a high speed USB hub (with power supply), usb disk can be recognized
if I run "dd" command to test reading usb disk, it will fail after reading for various seconds,
in these seconds data can be readed, then "I/O error" occurs, then USB disk reset
2.
If I connect external usb disk (high speed) to K800 through a full speed USB hub (also with power supply),
so usb disk will work in full speed mode, speed is quiet slow, but I can read through the whole usb disk
without any error
3.
If I connect a full speed external usb disk to K800 through a high speed USB hub,
I still get "I/O error" message like situation 1
the dmesg output like this:
---------------------------------------------------------------------------------------------------------------
<6>[ 303.190553] usb 1-1: new high speed USB device number 2 using penwell_otg
<6>[ 303.343537] hub 1-1:1.0: USB hub found
<6>[ 303.343937] hub 1-1:1.0: 4 ports detected
<4>[ 303.390899] penwell_otg 0000:00:02.3: ERR in HNP polling = -32, stop HNP polling
<6>[ 307.493811] usb_otg_suspend OTG HNP update suspend
<4>[ 317.369781] intel_scu_watchdog: Expected SW WDT warning irq received
<4>[ 317.369833] intel_scu_watchdog: interrupt tasklet body start
<3>[ 317.369979] intel_scu_watchdog: watchdog_keepalive
<6>[ 363.119997] intel_mdf_battery msic_battery: vbus_volt:5323
<6>[ 363.121088] intel_mdf_battery msic_battery: vbatt:3880000 temp:200
<7>[ 363.125085] max17042_get_property: VFSOC=61
<7>[ 363.125110] max17042_get_property: SOC= 62
<7>[ 363.126709] max17042_get_property: VFSOC=61
<7>[ 363.126726] max17042_get_property: SOC= 62
<7>[ 363.136076] max17042_get_property: VFSOC=61
<7>[ 363.136101] max17042_get_property: SOC= 62
<6>[ 423.277567] intel_mdf_battery msic_battery: vbus_volt:5323
<6>[ 423.278665] intel_mdf_battery msic_battery: vbatt:3881875 temp:200
<7>[ 423.281530] max17042_get_property: VFSOC=61
<7>[ 423.281555] max17042_get_property: SOC= 62
<7>[ 423.283265] max17042_get_property: VFSOC=61
<7>[ 423.283282] max17042_get_property: SOC= 62
<7>[ 423.291069] max17042_get_property: VFSOC=61
<7>[ 423.291095] max17042_get_property: SOC= 62
.....
<7>[ 2535.986746] usb-storage: Command READ_10 (10 bytes)
<7>[ 2535.986757] usb-storage: 28 00 00 30 a4 e0 00 00 f0 00
<7>[ 2535.986819] usb-storage: Bulk Command S 0x43425355 T 0x616c L 122880 F 128 Trg 0 LUN 0 CL 10
<7>[ 2535.986834] usb-storage: usb_stor_bulk_transfer_buf: xfer 31 bytes
<7>[ 2535.987185] usb-storage: Status code 0; transferred 31/31
<7>[ 2535.987198] usb-storage: -- transfer complete
<7>[ 2535.987209] usb-storage: Bulk command transfer result=0
<7>[ 2535.987224] usb-storage: usb_stor_bulk_transfer_sglist: xfer 122880 bytes, 29 entries
<7>[ 2536.025373] usb-storage: Status code -71; transferred 62976/122880
<7>[ 2536.025387] usb-storage: -- unknown error
<7>[ 2536.025393] usb-storage: Bulk data transfer result 0x4
<7>[ 2536.025397] usb-storage: -- transport indicates error, resetting
<7>[ 2536.025409] usb-storage: usb_stor_pre_reset
<3>[ 2536.057289] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.089281] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.126276] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.163273] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.200287] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.205573] hub 1-1:1.0: Cannot enable port 4. Maybe the USB cable is bad?
<3>[ 2536.244297] hub 1-1:1.0: cannot disable port 4 (err = -71)
<3>[ 2536.281293] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.318302] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.355284] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.392280] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.429277] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.434557] hub 1-1:1.0: Cannot enable port 4. Maybe the USB cable is bad?
<3>[ 2536.473263] hub 1-1:1.0: cannot disable port 4 (err = -71)
<3>[ 2536.510288] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.547259] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.584280] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.621280] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.658268] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.663562] hub 1-1:1.0: Cannot enable port 4. Maybe the USB cable is bad?
<3>[ 2536.702386] hub 1-1:1.0: cannot disable port 4 (err = -71)
<3>[ 2536.739275] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.776264] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.813273] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.850261] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.887254] hub 1-1:1.0: cannot reset port 4 (err = -71)
<3>[ 2536.892529] hub 1-1:1.0: Cannot enable port 4. Maybe the USB cable is bad?
<3>[ 2536.931288] hub 1-1:1.0: cannot disable port 4 (err = -71)
<3>[ 2536.968258] hub 1-1:1.0: cannot disable port 4 (err = -71)
<7>[ 2536.973734] usb-storage: usb_stor_post_reset
<7>[ 2536.973746] usb-storage: usb_reset_device returns -19
<7>[ 2536.973755] usb-storage: usb_stor_Bulk_reset called
<7>[ 2536.973765] usb-storage: usb_stor_control_msg: rq=ff rqtype=21 value=0000 index=00 len=0
<7>[ 2536.973774] usb-storage: Soft reset failed: -19
<7>[ 2536.973781] usb-storage: scsi cmd done, result=0x70000
<7>[ 2536.973829] usb-storage: queuecommand_lck called
<7>[ 2536.973846] usb-storage: *** thread sleeping.
<7>[ 2536.973853] usb-storage: *** thread awakened.
<7>[ 2536.973863] usb-storage: Command READ_10 (10 bytes)
<7>[ 2536.973867] usb-storage: 28 00 00 30 a4 e0 00 00 f0 00
<7>[ 2536.973892] usb-storage: Bulk Command S 0x43425355 T 0x616d L 122880 F 128 Trg 0 LUN 0 CL 10
<7>[ 2536.973898] usb-storage: usb_stor_bulk_transfer_buf: xfer 31 bytes
<7>[ 2536.973904] usb-storage: Status code -19; transferred 31/31
<7>[ 2536.973908] usb-storage: -- unknown error
<7>[ 2536.973913] usb-storage: Bulk command transfer result=4
<7>[ 2536.973917] usb-storage: -- transport indicates error, resetting
<7>[ 2536.973923] usb-storage: unable to lock device for reset: -19
<7>[ 2536.973928] usb-storage: usb_stor_Bulk_reset called
<7>[ 2536.973935] usb-storage: usb_stor_control_msg: rq=ff rqtype=21 value=0000 index=00 len=0
<7>[ 2536.973940] usb-storage: Soft reset failed: -19
<7>[ 2536.973945] usb-storage: scsi cmd done, result=0x70000
<7>[ 2536.973974] usb-storage: queuecommand_lck called
<7>[ 2536.973985] usb-storage: *** thread sleeping.
<7>[ 2536.973989] usb-storage: *** thread awakened.
<7>[ 2536.973995] usb-storage: Command READ_10 (10 bytes)
<7>[ 2536.973999] usb-storage: 28 00 00 30 a4 e0 00 00 f0 00
<7>[ 2536.974022] usb-storage: Bulk Command S 0x43425355 T 0x616e L 122880 F 128 Trg 0 LUN 0 CL 10
<7>[ 2536.974028] usb-storage: usb_stor_bulk_transfer_buf: xfer 31 bytes
<7>[ 2536.974034] usb-storage: Status code -19; transferred 31/31
<7>[ 2536.974038] usb-storage: -- unknown error
<7>[ 2536.974042] usb-storage: Bulk command transfer result=4
<7>[ 2536.974047] usb-storage: -- transport indicates error, resetting
<7>[ 2536.974052] usb-storage: unable to lock device for reset: -19
<7>[ 2536.974057] usb-storage: usb_stor_Bulk_reset called
<7>[ 2536.974064] usb-storage: usb_stor_control_msg: rq=ff rqtype=21 value=0000 index=00 len=0
<7>[ 2536.974069] usb-storage: Soft reset failed: -19
<7>[ 2536.974074] usb-storage: scsi cmd done, result=0x70000
<7>[ 2536.974097] usb-storage: queuecommand_lck called
<7>[ 2536.974108] usb-storage: *** thread sleeping.
<7>[ 2536.974114] usb-storage: *** thread awakened.
<7>[ 2536.974121] usb-storage: Command READ_10 (10 bytes)
<7>[ 2536.974125] usb-storage: 28 00 00 30 a4 e0 00 00 f0 00
<7>[ 2536.974153] usb-storage: Bulk Command S 0x43425355 T 0x616f L 122880 F 128 Trg 0 LUN 0 CL 10
<7>[ 2536.974160] usb-storage: usb_stor_bulk_transfer_buf: xfer 31 bytes
<7>[ 2536.974167] usb-storage: Status code -19; transferred 31/31
<7>[ 2536.974172] usb-storage: -- unknown error
<7>[ 2536.974177] usb-storage: Bulk command transfer result=4
<7>[ 2536.974182] usb-storage: -- transport indicates error, resetting
<7>[ 2536.974188] usb-storage: unable to lock device for reset: -19
<7>[ 2536.974194] usb-storage: usb_stor_Bulk_reset called
<7>[ 2536.974201] usb-storage: usb_stor_control_msg: rq=ff rqtype=21 value=0000 index=00 len=0
<7>[ 2536.974208] usb-storage: Soft reset failed: -19
<7>[ 2536.974214] usb-storage: scsi cmd done, result=0x70000
<7>[ 2536.974241] usb-storage: queuecommand_lck called
<7>[ 2536.974256] usb-storage: *** thread sleeping.
<7>[ 2536.974261] usb-storage: *** thread awakened.
<7>[ 2536.974267] usb-storage: Command READ_10 (10 bytes)
<7>[ 2536.974271] usb-storage: 28 00 00 30 a4 e0 00 00 f0 00
<7>[ 2536.974294] usb-storage: Bulk Command S 0x43425355 T 0x6170 L 122880 F 128 Trg 0 LUN 0 CL 10
<7>[ 2536.974300] usb-storage: usb_stor_bulk_transfer_buf: xfer 31 bytes
<7>[ 2536.974306] usb-storage: Status code -19; transferred 31/31
<7>[ 2536.974310] usb-storage: -- unknown error
<7>[ 2536.974314] usb-storage: Bulk command transfer result=4
<7>[ 2536.974318] usb-storage: -- transport indicates error, resetting
<7>[ 2536.974323] usb-storage: unable to lock device for reset: -19
<7>[ 2536.974329] usb-storage: usb_stor_Bulk_reset called
<7>[ 2536.974335] usb-storage: usb_stor_control_msg: rq=ff rqtype=21 value=0000 index=00 len=0
<7>[ 2536.974340] usb-storage: Soft reset failed: -19
<7>[ 2536.974345] usb-storage: scsi cmd done, result=0x70000
<7>[ 2536.974368] usb-storage: queuecommand_lck called
<7>[ 2536.974378] usb-storage: *** thread sleeping.
<7>[ 2536.974383] usb-storage: *** thread awakened.
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Is there any limitation to Medfield's penwell OTG? Does this also happens to Razr i?
Is this related to USB OTG's HNP polling?
Really thanks
Uranus Zhou