Module Name:    src
Committed By:   maxv
Date:           Sun Sep 15 09:24:39 UTC 2019

Modified Files:
        src/sys/dev/usb: usb_subr.c

Log Message:
Reset ud_pipe0 to NULL before calling usbd_setup_pipe_flags(). If the call
fails we call usbd_remove_device(), which tries to free ud_pipe0, but it
was already freed.

While here, add two sanity checks, to prevent possible surprises.

To generate a diff of this commit:
cvs rdiff -u -r1.239 -r1.240 src/sys/dev/usb/usb_subr.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

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