From: Martino Facchin <redacted>
Date: Fri, 18 Dec 2015 11:40:58 +0000 (+0100)
Subject: macosx: Fix port listing on ElCapitan.
X-Git-Tag: libserialport-0.1.1~6
X-Git-Url: https://sigrok.org/gitaction?a=commitdiff_plain;h=aacba60dca204923c2be4ffbdd9e43cb795c4cce;p=libserialport.git

macosx: Fix port listing on ElCapitan.

On OSX 10.11 (ElCapitan) the query for IOProviderClass fails to list ACM
devices as USB.
Add a fallback query using IOClass to correctly recognize these devices.
The fix has no effect on previous OSX versions (tested on Mavericks)
---

diff --git a/macosx.c b/macosx.c
index f5f1944..a0df84e 100644
--- a/macosx.c
+++ b/macosx.c
@@ -63,6 +63,17 @@ SP_PRIV enum sp_return get_port_details(struct sp_port *port)
 		DEBUG_FMT("Found port %s", path);
 
 		IORegistryEntryGetParentEntry(ioport, kIOServicePlane, &ioparent);
+		if ((cf_property=IORegistryEntrySearchCFProperty(ioparent,kIOServicePlane,
+		           CFSTR("IOClass"), kCFAllocatorDefault,
+		           kIORegistryIterateRecursively | kIORegistryIterateParents))) {
+			if (CFStringGetCString(cf_property, class, sizeof(class),
+			                       kCFStringEncodingASCII) &&
+			    strstr(class, "USB")) {
+				DEBUG("Found USB class device");
+				port->transport = SP_TRANSPORT_USB;
+			}
+			CFRelease(cf_property);
+		}
 		if ((cf_property=IORegistryEntrySearchCFProperty(ioparent,kIOServicePlane,
 		           CFSTR("IOProviderClass"), kCFAllocatorDefault,
 		           kIORegistryIterateRecursively | kIORegistryIterateParents))) {