From: Michael R Sweet <msweet@msweet.org>
Date: Thu, 13 Nov 2025 17:45:10 +0000 (-0500)
Subject: Report a debug message if we are unable to get the device descriptor when making... 
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=70b51629acaef91e5cb0e34e9fa812827bb2a00f;p=thirdparty%2Fcups.git

Report a debug message if we are unable to get the device descriptor when making the URI.
---

diff --git a/backend/usb-libusb.c b/backend/usb-libusb.c
index 31ab258aea..21a4ac89cc 100644
--- a/backend/usb-libusb.c
+++ b/backend/usb-libusb.c
@@ -1362,6 +1362,7 @@ make_device_uri(
     char          *uri,			/* I - Device URI buffer */
     size_t        uri_size)		/* I - Size of device URI buffer */
 {
+  int		errcode;		/* Error code from libusb */
   struct libusb_device_descriptor devdesc;
                                         /* Current device descriptor */
   int		num_values;		/* Number of 1284 parameters */
@@ -1384,7 +1385,10 @@ make_device_uri(
 
   memset(&devdesc, 0, sizeof(devdesc));
 
-  libusb_get_device_descriptor(printer->device, &devdesc);
+  if ((errcode = libusb_get_device_descriptor(printer->device, &devdesc)) < 0)
+  {
+    fprintf(stderr, "DEBUG: Unable to get device descriptor for device URI: %d\n", errcode);
+  }
   get_serial_number(printer, devdesc.iSerialNumber, sern, sizeof(sern));
 
   if ((mfg = cupsGetOption("MANUFACTURER", num_values, values)) == NULL)