logging: Fix lost printk output when no newline

Log_output module was always postfixing printk strings
with '\r'. If printk message did not ended with '\n'
it lead to last printk message being overwritten.

Fixed by adding '\r' only when string was ended by '\n'.

Signed-off-by: Krzysztof Chruscinski <[email protected]>

Author: nordic-krch

subsys/logging/log_output.c

@@ -359,17 +359,25 @@ static void raw_string_print(struct log_msg *msg,
 
 	size_t offset = 0;
 	size_t length;
+	bool eol = false;
 
 	do {
 		length = log_output->size;
 		/* Sting is stored in a hexdump message. */
 		log_msg_hexdump_data_get(msg, log_output->buf, &length, offset);
 		log_output->control_block->offset = length;
+
+		if (length) {
+			eol = (log_output->buf[length - 1] == '\n');
+		}
+
 		log_output_flush(log_output);
 		offset += length;
 	} while (length > 0);
 
-	print_formatted(log_output, "\r");
+	if (eol) {
+		print_formatted(log_output, "\r");
+	}
 }
 
 static int prefix_print(struct log_msg *msg,