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author | Matt DeVillier <matt.devillier@gmail.com> | 2018-12-25 04:43:21 -0600 |
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committer | Patrick Georgi <pgeorgi@google.com> | 2018-12-28 12:24:52 +0000 |
commit | 680ed1f632897b3ec493156863b05115f28102ef (patch) | |
tree | a85ae587141e44914078500343e1f40ed2bd263c /src/arch | |
parent | 337afb05676e4079263d289b21ff822570e90d3d (diff) |
ec/chromeec: fix LPC read/write for MEC devices
Commit 8cf8aa2 [ec/google/chromeec: Use common MEC interface]
changed the return mechanism for the checksum on reads/writes
for MEC devices, but incorrectly handled the passed-in csum
parameter by not dereferencing. This led to the returned csum
value always being zero, which causes all EC commands with non-
NULL data_in to fail with a checksum error.
Fix this by storing the returned checksum in a temp variable,
and only assigning to csum when the pointer isn't NULL;
Test: build/boot google/chell, verify EC hello command succeeds,
keyboard backlight turned on at boot.
Change-Id: I7122c3fdc5a19f87f12975ee448728cf29948436
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/30444
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Diffstat (limited to 'src/arch')
0 files changed, 0 insertions, 0 deletions