Hi , I am enabling uas support. And facing the issue as follows. I have observed that when ( Transcend StoreJet TS256GESD400K ) connected to my custom board, it detects first then uas_eh_abort_handler() get call and then reset and enumerates properly.When same device is used with 2.0 HUB their is no such issue. logs-->Super-speed [ 323.912384] usb 2-1: new SuperSpeed USB device number 3 using xhci-hcd [ 323.947103] scsi host1: uas [ 323.948153] scsi 1:0:0:0: Direct-Access StoreJet TS256GESD400K 0 PQ: 0 ANSI: 6 [ 323.949825] sd 1:0:0:0: [sda] 500118192 512-byte logical blocks: (256 GB/238 GiB) [ 354.092341] sd 1:0:0:0: tag#0 uas_eh_abort_handler 0 uas-tag 1 inflight: CMD IN [ 354.092380] sd 1:0:0:0: tag#0 CDB: opcode=0x12 12 01 00 00 40 00 [ 354.098922] scsi host1: uas_eh_device_reset_handler start [ 354.104963] xhci-hcd xhci-hcd.0.auto: ERROR Transfer event for disabled endpoint or incorrect stream ring [ 354.110095] xhci-hcd xhci-hcd.0.auto: @000000007d41f750 00000000 00000000 1b000000 01078001 [ 354.232398] usb 2-1: reset SuperSpeed USB device number 3 using xhci-hcd [ 354.253844] scsi host1: uas_eh_device_reset_handler success [ 354.263222] sd 1:0:0:0: [sda] Write Protect is off [ 354.263461] sd 1:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 354.267036] xhci-hcd xhci-hcd.0.auto: ERROR Transfer event for disabled endpoint or incorrect stream ring [ 354.275847] xhci-hcd xhci-hcd.0.auto: @000000007d41fa00 00000000 00000000 1b000000 01038001 [ 354.287566] sda: sda1 sda2 [ 354.295407] sd 1:0:0:0: [sda] Attached SCSI disk logs-->checked with 2.0 hub(same device) [ 104.292324] usb 3-1: new high-speed USB device number 2 using xhci-hcd [ 104.457236] hub 3-1:1.0: USB hub found [ 104.457305] hub 3-1:1.0: 4 ports detected [ 105.392323] usb 3-1.4: new high-speed USB device number 3 using xhci-hcd [ 105.545492] scsi host1: uas [ 105.546777] scsi 1:0:0:0: Direct-Access StoreJet TS256GESD400K 0 PQ: 0 ANSI: 6 [ 105.548876] sd 1:0:0:0: [sda] 500118192 512-byte logical blocks: (256 GB/238 GiB) [ 105.556591] sd 1:0:0:0: [sda] Write Protect is off [ 105.563321] sd 1:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA [ 105.570685] sda: sda1 sda2 [ 105.579182] sd 1:0:0:0: [sda] Attached SCSI disk Digging into issue I found that blk_rq_timed_out_timer() gets calls and which calls scsi_time_out() and further uas_eh_abort_handler(). [ blk_rq_timed_out_timer() --> blk_rq_check_expired()--> scsi_times_out()-->scsi_abort_command()--> scmd_eh_abort_handler()--> scsi_try_to_abort_cmd ()-->uas_eh_abort_handler() ] Also would like to add whenever we execute read_capacity_16() to read the capacity of the device suddenly we are receiving blk_rq_timed_out_timer() and around 30 sec device will reset and enumerate. Also there are errors from xhci driver too. Kernel : 4.4.60 and uas patches cherry-picked from kernel-4.14.13 Do we have such issue present in the upstream too? Please help in solving this issue.Any inputs will be helpful. Eager to solve this. Best Regards Tushar R. Nimkar -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
