[Nut-upsuser] blazer_usb and USBDEVFS_CONTROL failed

[Fabio Cecamore]

Hi all,
after a change of UPS (to Atlantis Host Power 851) I began to use the 
new driver blazer_usb and compared to old one (blazer used with serial 
connection) I noted more CPU use and errors in dmesg:

[...]
[256712.584370] usb 4-5: usbfs: USBDEVFS_CONTROL failed cmd blazer_usb 
rqt 33 rq 9 len 8 ret -110
[256789.640795] usb 4-5: usbfs: USBDEVFS_CONTROL failed cmd blazer_usb 
rqt 33 rq 9 len 8 ret -110
[257771.412836] usb 4-5: usbfs: USBDEVFS_CONTROL failed cmd blazer_usb 
rqt 33 rq 9 len 8 ret -110
[258932.684998] usb 4-5: usbfs: USBDEVFS_CONTROL failed cmd blazer_usb 
rqt 33 rq 9 len 8 ret -110
[258981.720738] usb 4-5: usbfs: USBDEVFS_CONTROL failed cmd blazer_usb 
rqt 33 rq 9 len 8 ret -110
[259180.876451] usb 4-5: usbfs: USBDEVFS_CONTROL failed cmd blazer_usb 
rqt 33 rq 9 len 8 ret -110
[259211.897105] usb 4-5: usbfs: USBDEVFS_CONTROL failed cmd blazer_usb 
rqt 33 rq 9 len 8 ret -110
[259232.909134] usb 4-5: usbfs: USBDEVFS_CONTROL failed cmd blazer_usb 
rqt 33 rq 9 len 8 ret -110
[394342.020322] usb 4-5: usbfs: USBDEVFS_CONTROL failed cmd blazer_usb 
rqt 33 rq 9 len 8 ret -110
[...]

This is the configuration of the driver in ups.conf:
[ups]
driver = blazer_usb
subdriver = cypress
vendorid = 0665
productid = 5161
port = auto
desc = "AtlantisLand Host Power 851+"

Obviously the usb ports work good, I think is a bug in the driver or 
something like..
Bye at all

Fabio C.