Am 24.12.2014 um 11:51 schrieb Russell King - ARM Linux: > While testing an EM28xx based USB DVB stick which I've recently acquired, > I find that occasionally the driver stops responding after it returns > -EFBIG from one of its ioctls. I've no idea whether there's a previous > kernel version which works. > > Finding the EFBIG return in ehci-sched.c, I decided to make the debug > a little more verbose there, and got: > > ci_hdrc ci_hdrc.0: request e7668800 would overflow (4093+63 >= 4096) > > So, I augmented it, which revealed: > > ci_hdrc ci_hdrc.0: request ecd75000 would overflow (4090+64-1 >= 4096+0) > ci_hdrc ci_hdrc.0: hs 1 xfer_flag 0x206 empty 1 new_stream 1 now 1032 next > 4090 base 1040 > > Here, start = 4090, period = 1, span = 64, mod = 4096, wrap = 0. > > This looks fairly complex to debug - any suggestions on how to debug > this further? > > Thanks. >
See https://bugzilla.kernel.org/show_bug.cgi?id=72891 Solved by http://www.spinics.net/lists/linux-usb/msg118366.html -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
