[Nut-upsdev] usbhid-ups: no reconnect on error EPIPE

[Arjen de Korte]

In response to my previous message, an excerpt from the syslog showing  
what happens:

Jan  4 21:40:11 mail usbhid-ups[5145]: libusb_get_report: error  
sending control message: Broken pipe
Jan  4 21:40:15 mail kernel: usb 1-2.1: usbfs: USBDEVFS_CONTROL failed  
cmd usbhid-ups rqt 128 rq 6 len 255 ret -110
Jan  4 21:40:16 mail kernel: usb 1-2.1: usbfs: USBDEVFS_CONTROL failed  
cmd usbhid-ups rqt 128 rq 6 len 255 ret -110
Jan  4 21:40:16 mail upsd[5149]: Data for UPS [ellipse] is stale -  
check driver
Jan  4 21:40:19 mail upsd[5149]: UPS [ellipse] data is no longer stale

The above happens fairly frequently, up to several times per hour. It  
looks like the UPS is somehow too busy to handle the USB communication  
and even fails to respond to the first two requests for the report  
descriptor. After that, it is business as usual again.

Best regards, Arjen
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