CVS commit: src/sys/dev/usb

["Jared D. McNeill" <jmcneill%netbsd.org@localhost>]

Module Name:    src
Committed By:   jmcneill
Date:           Mon Feb  5 23:07:42 UTC 2024

Modified Files:
        src/sys/dev/usb: ehcireg.h

Log Message:
Ensure proper alignment/padding of EHCI hardware descriptors.

These descriptor structs are embedded in structs that contain additional
context for software. With a non cache coherent device and non-padded
descriptors, the device may issue a read/modify/write past the end of
the descriptor, clobbering software state in the process. This was the
root cause of multiple crashes on evbppc with a non cache coherent EHCI.


To generate a diff of this commit:
cvs rdiff -u -r1.37 -r1.38 src/sys/dev/usb/ehcireg.h

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