Okay, I realize that this is tricky and a bit of a unique issue, so I understand if there aren't solutions out there.
More basically, then: how can I find the drivers/usb/musb/musb_host.c source file? Maybe I'm thinking about this wrong, but if that's throwing a warning, why can' tI find it anywhere in the file system to troubleshoot? On Wednesday, November 13, 2013 10:51:39 AM UTC-8, Danny Darko wrote: > > I've been trying to troubleshoot an issue, but lacking experience working > in the kernel, and not being able to find this same issue discussed > elsewhere, I could use some help. > > Basically, I have a USB communication class device interface with my BBB > that only works once between booting. I'll power up, send a character > command to the device, and get the expected response back ... but if I send > the same command again, fgets never returns a non-null string. If I reboot > the BBB, I can send the command and get the expected response back, but, > again, only once. > > Other USB issues I've seen discuss power, and my device is bus-powered, > but I don't think it's a power issue, as I found the following in dmesg, > which doesn't seem to relate to power (this message appears after the first > time sending a command to the device, and every time thereafter): > > WARNING: at drivers/usb/musb/musb_host.c:125 > musb_h_tx_flush_fifo+0x35/0x5c() > > Any ideas on how to troubleshoot this? Again, I have no experience working > in the kernel, so I'm at a loss. My only idea was to examine the code > throwing the warning, but, mysteriously, I searched the entire file system > (find / musb_host.c) and couldn't locate musb_host.c ... how could that > file be throwing the warning if it seemingly doesn't exist on my file > system? > > This is a company project and we're willing to pay for a solution at this > point. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
