CVS commit: [netbsd-9] src/sys/dev/acpi

["Martin Husemann" <martin%netbsd.org@localhost>]

Module Name:    src
Committed By:   martin
Date:           Fri Aug  9 16:13:36 UTC 2019

Modified Files:
        src/sys/dev/acpi [netbsd-9]: acpi_ec.c

Log Message:
Pull up following revision(s) (requested by msaitoh in ticket #38):

        sys/dev/acpi/acpi_ec.c: revision 1.76
        sys/dev/acpi/acpi_ec.c: revision 1.77

- Fix a bug that acpiec_space_handler() doesn't access more than 64bit
  correctly. Found by kUBSan on Thinkpad X220. acpiec0 accessed 128bits from
  address 0xa0. The error message was:
        UBSan: Undefined Behavior in ../../../../dev/acpi/acpi_ec.c:672:32, shift exponent 64 is too large for 64-bit type 'long unsigned int'

- KNF.

- Make the case that width < 8 behave as the same as before. Pointed out by
  Joerg.

- Change "switch" to "if" for simplify.


To generate a diff of this commit:
cvs rdiff -u -r1.75 -r1.75.20.1 src/sys/dev/acpi/acpi_ec.c

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