Regression in USB on Raspberry Pi 4

[John Klos <john%ziaspace.com@localhost>]

I've been running an 8 gig Raspberry Pi 4 with two USB-3 attached spinning 
rust disks as a raidframe mirror since last summer. So far, things have 
been running well.

The kernel I've been running this year is 9.99.77 from 3-January-2021, 
which gives this for the USB devices:

[     2.952959] umass0 at uhub0 port 1 configuration 1 interface 0
[     2.952959] umass0: Renesas Electronics (0x045b) uPD720231A (0x0229), rev 3.00/0.00, addr 1
[     2.969039] umass0: using SCSI over Bulk-Only
[     2.969039] scsibus0 at umass0: 2 targets, 1 lun per target
[     2.974592] uhub2 at uhub1 port 1: vendor 2109 (0x2109) USB2.0 Hub (0x3431), class 9/0, rev 2.10/4.21, addr 2
[     2.974592] uhub2: single transaction translator
[     2.984592] uhub2: 4 ports with 4 removable, self powered
[     2.984592] sd0 at scsibus0 target 0 lun 0: <HGST HUH, 728080ALE604, A4AZ> disk fixed
[     3.004592] sd0: fabricating a geometry
[     3.004592] sd0: 7452 GB, 7630885 cyl, 64 head, 32 sec, 512 bytes/sect x 15628053168 sectors
...
[     3.884605] umass1 at uhub0 port 2 configuration 1 interface 0
[     3.884605] umass1: Renesas Electronics (0x045b) uPD720231A (0x0229), rev 3.00/0.00, addr 3
[     3.900529] umass1: using SCSI over Bulk-Only
[     3.900529] scsibus1 at umass1: 2 targets, 1 lun per target
[     3.906082] sd1 at scsibus1 target 0 lun 0: <HGST HUH, 728080ALE604, A4AZ> disk fixed
[     3.916082] sd1: fabricating a geometry
[     3.926082] sd1: 7452 GB, 7630885 cyl, 64 head, 32 sec, 512 bytes/sect x 15628053168 sectors


I just tried a GENERIC64 kernel compiled today (with HAVE_GCC=10), and it 
wasn't happy with USB:

[   2.9529159] umass0 at uhub0 port 1 configuration 1 interface 0
[   2.9529159] umass0: Renesas Electronics (0x045b) uPD720231A (0x0229), rev 3.00/0.00, addr 1
[   2.9689657] uhub2 at uhub1 port 1: vendor 2109 (0x2109) USB2.0 Hub (0x3431), class 9/0, rev 2.10/4.21, addr 2
[   2.9729167] uhub2: single transaction translator
[   8.0029905] umass0: could not open 130-in pipe (bulk)
[  13.9130779] uhub0: device problem, disabling port 2

Any ideas about what needs to be fixed here?

Thanks,
John Klos