From: Paweł Szewczyk <p.szewczyk@samsung.com>
Date: Wed, 17 May 2017 13:01:13 +0000 (+0200)
Subject: Fix blocking libusb event handling
X-Git-Tag: submit/tizen/20170605.090941^0
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=refs%2Fchanges%2F85%2F129685%2F1;p=platform%2Fcore%2Fapi%2Fusb-host.git

Fix blocking libusb event handling

This patch changes libusb_handle_events to
libusb_handle_events_timeout_completed, which is non-blocking and does
not cause applications to hang.

Change-Id: Ieebfcab3ae827b158345e09c41d6c136a7ed0e18
Signed-off-by: Paweł Szewczyk <p.szewczyk@samsung.com>
---

diff --git a/src/usb_host.c b/src/usb_host.c
index 620664d..708e0bc 100644
--- a/src/usb_host.c
+++ b/src/usb_host.c
@@ -370,12 +370,17 @@ out:
 static gboolean usb_host_poll_cb(GIOChannel *source, GIOCondition condition, gpointer data)
 {
 	usb_host_context_h ctx = data;
+	int ret;
+	struct timeval tv = {0, 0};
 	_I("usb_host_poll_cb");
 
-	if (libusb_handle_events(ctx->lusb_ctx) == 0)
-		return TRUE;
+	ret = libusb_handle_events_timeout_completed(ctx->lusb_ctx, &tv, NULL);
+	if (ret < 0) {
+		_E("Could not handle events");
+		return FALSE;
+	}
 
-	return FALSE;
+	return TRUE;
 }
 
 static int add_fd_watch(int fd, short events, void *user_data)