Hi,
On 21-12-16 13:07, George Cherian wrote:
On 12/21/2016 05:12 PM, Oliver Neukum wrote:
On Wed, 2016-12-21 at 17:09 +0530, George Cherian wrote:
Hi Oliver,
I was working with this JMicron device and using the uas driver.
I am seeing the following 2 issues.
1) On connect I see the following messages.
Thanks. Do you want to submit it to Greg?
The patch is fine.
Yes please!!!
2) On disconnect I am seeing the following issue
scsi host4: uas_post_reset: alloc streams error -19 after reset
sd 4:0:0:0: [sdb] Synchronizing SCSI cache
This is more fatal because after these messages the USB port becomes
unusable. Even an lsusb invocation hangs for ever.
Ouch. That points to a logic error. We should not reset if
a device is gone.
Could you send dmesg of such a case?
here is the dmesg!!
[ 203.475382] usb 4-1.3: new SuperSpeed USB device number 3 using xhci_hcd
[ 203.496172] usb 4-1.3: New USB device found, idVendor=152d, idProduct=9561
[ 203.503037] usb 4-1.3: New USB device strings: Mfr=1, Product=2, SerialNumber=5
[ 203.510352] usb 4-1.3: Product: JMS56x Series
[ 203.514698] usb 4-1.3: Manufacturer: JMicron
[ 203.518966] usb 4-1.3: SerialNumber: 00000000000000000000
[ 203.594383] usbcore: registered new interface driver usb-storage
[ 203.612425] scsi host4: uas
[ 203.615418] usbcore: registered new interface driver uas
[ 203.620979] scsi 4:0:0:0: Direct-Access ST4000NM 0033-9ZM170 0001 PQ: 0 ANSI: 6
[ 203.630240] sd 4:0:0:0: Attached scsi generic sg1 type 0
[ 203.630382] sd 4:0:0:0: [sdb] 7814037168 512-byte logical blocks: (4.00 TB/3.63 TiB)
[ 203.631338] sd 4:0:0:0: [sdb] Write Protect is off
[ 203.631342] sd 4:0:0:0: [sdb] Mode Sense: 67 00 10 08
[ 203.631734] sd 4:0:0:0: [sdb] Write cache: enabled, read cache: enabled, supports DPO and FUA
[ 203.631899] xhci_hcd 0000:00:11.0: ERROR Transfer event for disabled endpoint or incorrect stream ring
[ 203.631904] xhci_hcd 0000:00:11.0: @0000001f610a1c10 00000000 00000000 1b000000 03078001 state 14 ep_info 9403
[ 203.631906] xhci_hcd 0000:00:11.0: No epring
[ 203.674546] sdb: sdb1
[ 203.676639] sd 4:0:0:0: [sdb] Attached SCSI disk
[ 213.222913] scsi host4: uas_post_reset: alloc streams error -19 after reset
[ 213.230548] sd 4:0:0:0: [sdb] Synchronizing SCSI cache
Above is the dmesg without the unusual_uas patch applied.
Do you need me to enable any specific dev_dbg and then the dmesg output?
Can you get us a dmesg with the unusual_uas patch applied? Usually once things go foobar because
of issue-ing a command which the device does not understand, more things typically come down
as both the device and the host may be in an undefined state then.
Regards,
Hans
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