command_ret_t enum contains 3 return values but only two are handled now. Extend cmd_process_error() and handle CMD_RET_USAGE separately.
These commands are affected by this change. cmd/demo.c cmd/efi.c cmd/gpio.c cmd/qfw.c cmd/x86/fsp.c test/dm/cmd_dm.c
And scripts shouldn't be affected because return value is not 0. But every command implementation can choose what it is correct to pass. I would expect that RET_USAGE is called when parameters are not correctly passed (have incorrect value, missing parameters) and RET_FAILURE when correct parameters are passed but command fails.
Signed-off-by: Michal Simek michal.simek@xilinx.com ---
Changes in v2: - Separated patch from 1/2 - Extend description in command.h
common/command.c | 3 +++ include/command.h | 4 +++- 2 files changed, 6 insertions(+), 1 deletion(-)
diff --git a/common/command.c b/common/command.c index a4a8dc601acb..2433a89e0a8e 100644 --- a/common/command.c +++ b/common/command.c @@ -547,6 +547,9 @@ enum command_ret_t cmd_process(int flag, int argc, char * const argv[],
int cmd_process_error(cmd_tbl_t *cmdtp, int err) { + if (err == CMD_RET_USAGE) + return CMD_RET_USAGE; + if (err) { printf("Command '%s' failed: Error %d\n", cmdtp->name, err); return CMD_RET_FAILURE; diff --git a/include/command.h b/include/command.h index 04cd1e745cbf..5b1577f3b477 100644 --- a/include/command.h +++ b/include/command.h @@ -67,7 +67,9 @@ extern int cmd_auto_complete(const char *const prompt, char *buf, int *np, int * * * @cmdtp: Command which caused the error * @err: Error code (0 if none, -ve for error, like -EIO) - * @return 0 if there is not error, 1 (CMD_RET_FAILURE) if an error is found + * @return 0 (CMD_RET_SUCCESX) if there is not error, + * 1 (CMD_RET_FAILURE) if an error is found + * -1 (CMD_RET_USAGE) if 'usage' error is found */ int cmd_process_error(cmd_tbl_t *cmdtp, int err);