[S] Change in flashrom[master]: flashrom.c: Deconflate bad cfg validation from param residue check

[Edward O'Callaghan (Code Review)]

Edward O'Callaghan has uploaded this change for review. ( https://review.coreboot.org/c/flashrom/+/67401 )

Change subject: flashrom.c: Deconflate bad cfg validation from param residue check
......................................................................

flashrom.c: Deconflate bad cfg validation from param residue check

In practice the programmer's init() entry point fails either
as a result of a bad configuration early or bad initalisation
late. While the param residue check is an othogonal issue and
therefore deconflate the two checks.

Change-Id: I0fba6bbbe4b685b210d1cba17e7b5815c5c01a45
Signed-off-by: Edward O'Callaghan 
---
M flashrom.c
1 file changed, 27 insertions(+), 21 deletions(-)

git pull ssh://review.coreboot.org:29418/flashrom refs/changes/01/67401/1

diff --git a/flashrom.c b/flashrom.c
index 6c38e62..e124e71 100644
--- a/flashrom.c
+++ b/flashrom.c
@@ -124,26 +124,6 @@
    return rc;
 }

-static int get_param_residue(const char *prog_params, int ret)
-{
-	if (prog_params && strlen(prog_params)) {
-		if (ret != 0) {
-			/* It is quite possible that any unhandled programmer parameter would have been valid,
-			 * but an error in actual programmer init happened before the parameter was evaluated.
-			 */
-			msg_pwarn("Unhandled programmer parameters (possibly due to another failure): %s\n", prog_params);
-		} else {
-			/* Actual programmer init was successful, but the user specified an invalid or unusable
-			 * (for the current programmer configuration) parameter.
-			 */
-			msg_perr("Unhandled programmer parameters: %s\n", prog_params);
-			msg_perr("Aborting.\n");
-			ret = ERROR_FATAL;
-		}
-	}
-	return ret;
-}
-
 int programmer_init(const struct programmer_entry *prog, const char *param)
 {
    if (prog == NULL) {
@@ -169,7 +149,18 @@
    msg_pdbg("Initializing %s programmer\n", prog->name);
    const struct programmer_cfg cfg = { .params = strdup(param) };
    int ret = prog->init(&cfg);
-	ret = get_param_residue(cfg.params, ret);
+	if (ret != 0) {
+		msg_pwarn("Invalid programmer configuration or initalisation.\n");
+		goto bad_init;
+	}
+	if (cfg.params && strlen(cfg.params)) {
+		msg_perr("Unhandled programmer parameters: %s\n", cfg.params);
+		msg_perr("Aborting.\n");
+		ret = ERROR_FATAL;
+		goto bad_init;
+	}
+
+bad_init:
    free(cfg.params);
    return ret;
 }