From: Uwe Hermann <redacted>
Date: Wed, 2 Apr 2014 16:23:23 +0000 (+0200)
Subject: chronovu-la: Show errors other than "device not found".
X-Git-Tag: libsigrok-0.3.0~86
X-Git-Url: http://sigrok.org/gitweb/?p=libsigrok.git;a=commitdiff_plain;h=cfe01d0607a65bf4e17e3a8d15e4c0f2b20fb55c

chronovu-la: Show errors other than "device not found".

This can be useful for the user to see, e.g. for permission related
issues (device is there, but cannot be accessed).
---

diff --git a/hardware/chronovu-la/api.c b/hardware/chronovu-la/api.c
index d258d370..b232a10b 100644
--- a/hardware/chronovu-la/api.c
+++ b/hardware/chronovu-la/api.c
@@ -168,8 +168,12 @@ static GSList *scan(GSList *options)
 	for (i = 0; i < ARRAY_SIZE(vid_pid); i++) {
 		ret = ftdi_usb_open_desc(ftdic, vid_pid[i].vid,
 			vid_pid[i].pid, vid_pid[i].iproduct, NULL);
+		/* Show errors other than "device not found". */
+		if (ret < 0 && ret != -3)
+			sr_dbg("Error finding/opening device (%d): %s.",
+			       ret, ftdi_get_error_string(ftdic));
 		if (ret < 0)
-			continue; /* No device found. */
+			continue; /* No device found, or not usable. */
 
 		sr_dbg("Found %s device (%04x:%04x).",
 		       vid_pid[i].iproduct, vid_pid[i].vid, vid_pid[i].pid);