acpi/soundwire.[ch]: Fix dpn entry array overrun

In soundwire.h, SOUNDWIRE_DPN MIN  & MAX are set to 1 and 14. When
creating the dpn array, the length was set to MAX - MIN or 13, numbered
0 to 12.

When accessing the array, the code was bailing out if a value greater
than MAX was trying to be accessed, so the array was able to be overrun
by two structure lengths.

Fix this problem by:
1) Not subtracting the MIN value when creating the array, which does
waste a little space. If anyone wants to refactor the code to fix that,
please feel free.
2) Breaking out of the loop when the port is equal to the MAX port
number instead of just when it's greater than the max port number.

Reported-by: Coverity (CID:1429766 & CID:1429771)
Signed-off-by: Martin Roth <gaumless@gmail.com>
Change-Id: I0841bb8c9869fe9f53958f05614848785a98b766
Reviewed-on: https://review.coreboot.org/c/coreboot/+/77777
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <inforichland@gmail.com>

0 files changed, 0 insertions, 0 deletions