From: Gerhard Sittig <redacted>
Date: Sun, 9 May 2021 17:27:22 +0000 (+0200)
Subject: serial_libsp: extend diag in code path which opens serial ports
X-Git-Url: https://sigrok.org/gitweb/?p=libsigrok.git;a=commitdiff_plain;h=ac1866b9236cd9271c17d2760441759f34befeb7

serial_libsp: extend diag in code path which opens serial ports

Opening a serial port involves two libserialport calls, while only the
second call's return value gets inspected. Check the lookup before the
open, too, and provide its details in a diag message.
---

diff --git a/src/serial_libsp.c b/src/serial_libsp.c
index bfdc3202..7cf5a460 100644
--- a/src/serial_libsp.c
+++ b/src/serial_libsp.c
@@ -55,7 +55,14 @@ static int sr_ser_libsp_open(struct sr_serial_dev_inst *serial, int flags)
 	char *error;
 	int sp_flags;
 
-	sp_get_port_by_name(serial->port, &serial->sp_data);
+	ret = sp_get_port_by_name(serial->port, &serial->sp_data);
+	if (ret != SP_OK) {
+		error = sp_last_error_message();
+		sr_err("Error getting port from name %s: (%d) %s.",
+			serial->port, sp_last_error_code(), error);
+		sp_free_error_message(error);
+		return SR_ERR;
+	}
 
 	sp_flags = 0;
 	if (flags & SERIAL_RDWR)