[Accel-config] [PATCH v1 7/7] accel-config: Fix and refactor status return and printing

From: Ramesh Thomas <ramesh.thomas(a)intel.com>

Return values should be 0 = success and < 0 = error. Some places were
not return correct values. Simplify the return and status messages.

Signed-off-by: Ramesh Thomas <ramesh.thomas(a)intel.com>
---
 accfg/enable.c | 88 ++++++++++++++------------------------------------
 1 file changed, 24 insertions(+), 64 deletions(-)

diff --git a/accfg/enable.c b/accfg/enable.c
index 642e30a..9cb6794 100644
--- a/accfg/enable.c
+++ b/accfg/enable.c
@@ -100,7 +100,7 @@ static int device_action(int argc, const char **argv, const char *usage,
 		usage,
 		NULL
 	};
-	int i, rc = 0, success = 0, fail = 0, fail_reason = 0;
+	int i, rc = -EINVAL, success = 0;
 	const char *all = "all";
 	enum accfg_device_state state;
 
@@ -139,13 +139,15 @@ static int device_action(int argc, const char **argv, const char *usage,
 				 * matches with the enable/disable
 				 */
 				state = accfg_device_get_state(device);
-				if (((state == 1) && (action == DEV_ACTION_ENABLE))
-				    ||((state == 0) && (action == DEV_ACTION_DISABLE)))
-					success++;
-				else
-					fail++;
-			} else if (!fail) {
-				fail_reason = rc;
+				if (((state != ACCFG_DEVICE_ENABLED) &&
+						(action == DEV_ACTION_ENABLE)) ||
+						((state != ACCFG_DEVICE_DISABLED) &&
+						 (action == DEV_ACTION_DISABLE)))
+					rc = ENXIO;
+			}
+			if (rc == 0) {
+				success++;
+			} else {
 				fprintf(stderr, "failed in %s\n", argv[i]);
 
 				print_device_cmd_status(device);
@@ -157,34 +159,14 @@ static int device_action(int argc, const char **argv, const char *usage,
 					argv[i]);
 	}
 
-	if (success) {
-		if (action == DEV_ACTION_ENABLE)
-			fprintf(stderr, "successfully enabled %d device%s\n",
-					success, success > 1 ? "s" : "");
-		else
-			fprintf(stderr, "successfully disabled %d device%s\n",
-					success, success > 1 ? "s" : "");
-		return success;
-	}
-
-	if (fail) {
-		if (action == DEV_ACTION_ENABLE)
-			fprintf(stderr, "failed to enable %d device%s\n", fail,
-				fail > 1 ? "s" : "");
-		else
-			fprintf(stderr, "failed to disable %d device%s\n", fail,
-				fail > 1 ? "s" : "");
+	fprintf(stderr, "%s %d device(s) out of %d\n",
+			action == DEV_ACTION_ENABLE ? "enabled" : "disabled",
+				success, argc);
 
-		return fail;
-	}
+	if (success)
+		return 0;
 
-	if (fail_reason) {
-		fprintf(stderr, "failed due to reason %s\n",
-				strerror(abs(fail_reason)));
-		return fail_reason;
-	}
-
-	return -ENXIO;
+	return rc;
 }
 
 static int action_disable_wq(struct accfg_wq *wq, const char *wq_name)
@@ -245,7 +227,7 @@ static int wq_action(int argc, const char **argv, const char *usage,
 		NULL
 	};
 	unsigned long dev_id, wq_id;
-	int i, rc = 0, success = 0, fail = 0, fail_reason = 0;
+	int i, rc = -EINVAL, success = 0;
 	const char *all = "all";
 
 	argc = parse_options(argc, argv, options, u, 0);
@@ -281,7 +263,7 @@ static int wq_action(int argc, const char **argv, const char *usage,
 
 		rc = sprintf(wq_name, "wq%lu.%lu", dev_id, wq_id);
 		if (rc < 0)
-			return errno;
+			return rc;
 
 		accfg_device_foreach(ctx, device) {
 			if (!util_device_filter(device, dev_name))
@@ -294,8 +276,6 @@ static int wq_action(int argc, const char **argv, const char *usage,
 				if (rc == 0) {
 					success++;
 				} else {
-					fail++;
-					fail_reason = rc;
 					fprintf(stderr, "failed in %s\n", wq_name);
 
 					print_device_cmd_status(device);
@@ -307,34 +287,14 @@ static int wq_action(int argc, const char **argv, const char *usage,
 			fprintf(stderr, "no wq matches id: %s\n", wq_name);
 	}
 
-	if (success) {
-		if (action == WQ_ACTION_ENABLE)
-			fprintf(stderr, "successfully enabled %d wq%s\n",
-					success,
-			success > 1 ? "s" : "");
-		else
-			fprintf(stderr, "successfully disabled %d wq%s\n",
-					success,
-			success > 1 ? "s" : "");
-		return success;
-	}
+	fprintf(stderr, "%s %d wq(s) out of %d\n",
+			action == WQ_ACTION_ENABLE ? "enabled" : "disabled",
+				success, argc);
 
-	if (fail) {
-		if (action == WQ_ACTION_ENABLE)
-			fprintf(stderr, "failed to enable %d wq%s\n",
-			fail, fail > 1 ? "s" : "");
-		else
-			fprintf(stderr, "failed to disable %d wq%s\n",
-			fail, fail > 1 ? "s" : "");
-		return fail;
-	}
+	if (success)
+		return 0;
 
-	if (fail_reason) {
-		fprintf(stderr, "failed due to reason %s\n",
-			strerror(abs(fail_reason)));
-		return fail_reason;
-	}
-	return -ENXIO;
+	return rc;
 }
 
 int cmd_disable_device(int argc, const char **argv, void *ctx)
-- 
2.26.2