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ec/google/chromeec: Clarify return value of google_chromeec_command 

This patch clarifies the definition of google_chromeec_command.

Currently absence of the definition isn't causing any problem because
wrapper APIs check 'ret != 0' or wrapper APIs check 'ret < 0' for an
interface which returns only negative error codes.

However, there is a chance that a new wrapper API will be addedl which
check 'ret < 0' to catch errors, assuming other interfaces behave the same.
Or existing wrapper APIs will be broken as soon as they're compiled for
another interface.

BUG=chromium:935038
TEST=none

Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Change-Id: I2ce7109b5f2a1d5294f167719730bc1f039ba03f
Reviewed-on: https://review.coreboot.org/c/31613
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
This commit is contained in:
Daisuke Nojiri 2019-02-25 13:56:43 -08:00 committed by Patrick Georgi
parent 967edec254
commit 7bbed26ca9
1 changed files with 6 additions and 0 deletions
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6
src/ec/google/chromeec/ec.h
View File

@ -155,6 +155,12 @@ typedef int (*crosec_io_t)(size_t req_size, size_t resp_size, void *context);
int crosec_command_proto(struct chromeec_command *cec_command,
crosec_io_t crosec_io, void *context);
/**
* Send a command to a CrOS EC
*
* @param cec_command: CrOS EC command to send
* @return 0 for success. Non-zero for error.
*/
int google_chromeec_command(struct chromeec_command *cec_command);
struct google_chromeec_event_info {