system kernel is 3.13.6, the origin issue is mount usb storage(3.0) on usb3.0 port not smooth, i found the solve method is revert xhci.c patch, here is the link : https://lkml.org/lkml/2014/3/7/295 After i revert the patch, mount usb storage is fine. But it takes some issue, here is test case : Here is test case : usb storage 2.0 remove from usb 3.0 port => kernel trace usb storage 2.0 remove from usb 2.0 port => kernel trace usb storage 3.0 remove from usb 3.0 port => kernel trace Kernel trace message: [224189.786719] usb 2-1: USB disconnect, device number 4 [224189.820934] ------------[ cut here ]------------ [224189.820949] WARNING: CPU: 3 PID: 14554 at fs/sysfs/group.c:214 sysfs_remove_group+0x37/0x69() [224189.820953] sysfs group c1851c34 not found for kobject 'target7:0:0' [224189.820956] Modules linked in: snd_hda_intel(F) snd_hda_codec_via(F) snd_hda_codec(F) snd_hwdep(F) snd_pcm_oss(F) snd_mixer_oss(F) snd_pcm(F) snd_seq_dummy(F) snd_page_alloc(F) snd_seq_oss(F) snd_seq_midi_event(F) snd_seq(F) snd_timer(F) snd_seq_device(F) snd(F) parport_pc(F) fan(F) ppdev(F) lp(F) parport(F) [224189.820985] CPU: 3 PID: 14554 Comm: umount Tainted: GF W 3.13.6 #1 [224189.820988] Hardware name: LG CNS t180/t180, BIOS 1.11 03/21/2014 [224189.820991] 00000000 00000000 da877d98 c154fb31 c175e60a da877db0 c102e9f5 c112446b [224189.821001] 00000000 c1851c34 ea14f21c da877dc8 c102ea70 00000009 da877dc0 c175e60a [224189.821010] da877ddc da877df0 c112446b c175e5bf 000000d6 c175e60a c1851c34 ea28e0e0 [224189.821019] Call Trace: [224189.821028] [<c154fb31>] dump_stack+0x41/0x52 [224189.821036] [<c102e9f5>] warn_slowpath_common+0x61/0x78 [224189.821042] [<c112446b>] ? sysfs_remove_group+0x37/0x69 [224189.821047] [<c102ea70>] warn_slowpath_fmt+0x26/0x2a [224189.821053] [<c112446b>] sysfs_remove_group+0x37/0x69 [224189.821060] [<c133a8bd>] dpm_sysfs_remove+0x2d/0x30 [224189.821065] [<c1334b1c>] device_del+0x2c/0x130 [224189.821072] [<c134ae09>] scsi_target_reap_usercontext+0x1f/0x2a [224189.821078] [<c103f04a>] execute_in_process_context+0x16/0x45 [224189.821083] [<c134b714>] scsi_target_reap+0x81/0x87 [224189.821090] [<c134cd52>] scsi_device_dev_release_usercontext+0x116/0x13b [224189.821095] [<c103f04a>] execute_in_process_context+0x16/0x45 [224189.821101] [<c134c9ea>] scsi_device_dev_release+0x13/0x15 [224189.821107] [<c13342d5>] device_release+0x46/0x78 [224189.821114] [<c1232827>] kobject_cleanup+0x3e/0x4e [224189.821120] [<c123275c>] kobject_put+0x3c/0x3e [224189.821125] [<c1232832>] ? kobject_cleanup+0x49/0x4e [224189.821131] [<c1334173>] put_device+0xf/0x11 [224189.821137] [<c13443cc>] scsi_device_put+0x2f/0x33 [224189.821143] [<c135102e>] scsi_disk_put+0x23/0x31 [224189.821148] [<c13524f5>] sd_release+0x40/0x44 [224189.821154] [<c11042ba>] __blkdev_put+0x83/0xfa [224189.821159] [<c1104329>] __blkdev_put+0xf2/0xfa [224189.821164] [<c1104409>] blkdev_put+0xd8/0xde [224189.821170] [<c10e0d1f>] kill_block_super+0x54/0x58 [224189.821177] [<c10e0422>] deactivate_locked_super+0x24/0x41 [224189.821182] [<c10e0d7d>] deactivate_super+0x28/0x2b [224189.821188] [<c10f3016>] mntput_no_expire+0xc7/0xe3 [224189.821194] [<c10f3d0d>] SYSC_umount+0x293/0x2b0 [224189.821200] [<c10f3d38>] SyS_umount+0xe/0x10 [224189.821206] [<c155a1fa>] sysenter_do_call+0x12/0x22 [224189.821210] ---[ end trace 096ea20d8206361e ]-- Another issue : usb storage 3.0 remove from usb 2.0 port => I/O error, device node /dev/sda1 not created. kernel message : [ 494.932012] usb 1-2: new high-speed USB device number 15 using xhci_hcd [ 494.949878] usb 1-2: New USB device found, idVendor=0781, idProduct=5580 [ 494.949904] usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 [ 494.949921] usb 1-2: Product: Extreme [ 494.949936] usb 1-2: Manufacturer: SanDisk [ 494.949951] usb 1-2: SerialNumber: AA011102120418337893 [ 494.952471] usb 1-2: ep 0x81 - rounding interval to 16 microframes, ep desc says 20 microframes [ 494.952500] usb 1-2: ep 0x2 - rounding interval to 16 microframes, ep desc says 20 microframes [ 494.954849] usb-storage 1-2:1.0: USB Mass Storage device detected [ 494.955710] scsi11 : usb-storage 1-2:1.0 [ 495.958923] scsi 11:0:0:0: Direct-Access SanDisk Extreme 0001 PQ: 0 ANSI: 6 [ 495.962302] sd 11:0:0:0: [sda] 31277232 512-byte logical blocks: (16.0 GB/14.9 GiB) [ 495.962699] sd 11:0:0:0: [sda] Write Protect is off [ 495.962710] sd 11:0:0:0: [sda] Mode Sense: 53 00 00 08 [ 495.963003] sd 11:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA [ 518.939977] usb 1-2: USB disconnect, device number 15 [ 518.946177] sd 11:0:0:0: [sda] Unhandled error code [ 518.946183] sd 11:0:0:0: [sda] [ 518.946187] Result: hostbyte=0x01 driverbyte=0x00 [ 518.946191] sd 11:0:0:0: [sda] CDB: [ 518.946194] cdb[0]=0x28: 28 00 00 00 00 00 00 00 08 00 [ 518.946206] end_request: I/O error, dev sda, sector 0 [ 518.946211] quiet_error: 122 callbacks suppressed [ 518.946214] Buffer I/O error on device sda, logical block 0 [ 518.946274] ldm_validate_partition_table(): Disk read failed. [ 518.946288] sda: unable to read partition table [ 518.947187] sd 11:0:0:0: [sda] Attached SCSI removable disk Thanks -- Chris Cheng 鄭宇廷 Atrust Computer Corp. 冠信電腦股份有限公司 http://www.atrustcorp.com Tel: +886-3-3288837 ext.1074 3F., No.361, Fusing 1st Rd., Gueishan Township, Taoyuan County 333, Taiwan 333 桃園縣龜山鄉復興一路361號3F -- 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
