From 6262005e88c7c9edff4c0f962ca338ffb2a299fb Mon Sep 17 00:00:00 2001
From: Michael Gernoth <michael@gernoth.net>
Date: Sat, 13 Jul 2013 15:52:21 +0200
Subject: [PATCH 1/1] do not report errors when sending of the wakeup-frame
 fails

---
 hmcfgusb.c | 8 ++++----
 hmcfgusb.h | 2 +-
 hmland.c   | 4 ++--
 hmsniff.c  | 4 ++--
 4 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/hmcfgusb.c b/hmcfgusb.c
index 05f16be..825b313 100644
--- a/hmcfgusb.c
+++ b/hmcfgusb.c
@@ -142,14 +142,14 @@ static libusb_device_handle *hmcfgusb_find() {
 	return NULL;
 }
 
-int hmcfgusb_send_null_frame(struct hmcfgusb_dev *usbdev)
+int hmcfgusb_send_null_frame(struct hmcfgusb_dev *usbdev, int silent)
 {
 	int err;
 	int cnt;
 
 	err = libusb_interrupt_transfer(usbdev->usb_devh, EP_OUT, NULL, 0, &cnt, USB_TIMEOUT);
-	if (err) {
-		fprintf(stderr, "Can't send data: %s\n", usb_strerror(err));
+	if (err && (!silent)) {
+		fprintf(stderr, "Can't send null frame: %s\n", usb_strerror(err));
 		return 0;
 	}
 
@@ -176,7 +176,7 @@ int hmcfgusb_send(struct hmcfgusb_dev *usbdev, unsigned char* send_data, int len
 	}
 
 	if (done) {
-		if (!hmcfgusb_send_null_frame(usbdev)) {
+		if (!hmcfgusb_send_null_frame(usbdev, 0)) {
 			return 0;
 		}
 	}
diff --git a/hmcfgusb.h b/hmcfgusb.h
index e50f831..df6d1c1 100644
--- a/hmcfgusb.h
+++ b/hmcfgusb.h
@@ -32,7 +32,7 @@ struct hmcfgusb_dev {
 };
 
 int hmcfgusb_send(struct hmcfgusb_dev *usbdev, unsigned char* send_data, int len, int done);
-int hmcfgusb_send_null_frame(struct hmcfgusb_dev *usbdev);
+int hmcfgusb_send_null_frame(struct hmcfgusb_dev *usbdev, int silent);
 struct hmcfgusb_dev *hmcfgusb_init(hmcfgusb_cb_fn cb, void *data);
 int hmcfgusb_add_pfd(struct hmcfgusb_dev *dev, int fd, short events);
 int hmcfgusb_poll(struct hmcfgusb_dev *dev, int timeout);
diff --git a/hmland.c b/hmland.c
index a9d9670..c50022c 100644
--- a/hmland.c
+++ b/hmland.c
@@ -455,7 +455,7 @@ static int comm(int fd_in, int fd_out, int master_socket, int flags)
 	memset(out, 0, sizeof(out));
 	out[0] = 'K';
 	wait_for_h = 1;
-	hmcfgusb_send_null_frame(dev);
+	hmcfgusb_send_null_frame(dev, 1);
 	hmcfgusb_send(dev, out, sizeof(out), 1);
 
 	while(!quit) {
@@ -482,7 +482,7 @@ static int comm(int fd_in, int fd_out, int master_socket, int flags)
 				quit = 1;
 			} else {
 				/* periodically wakeup the device */
-				hmcfgusb_send_null_frame(dev);
+				hmcfgusb_send_null_frame(dev, 1);
 			}
 		}
 	}
diff --git a/hmsniff.c b/hmsniff.c
index 837f4e0..1936d5b 100644
--- a/hmsniff.c
+++ b/hmsniff.c
@@ -188,7 +188,7 @@ int main(int argc, char **argv)
 		}
 		printf("HM-CFG-USB opened!\n");
 
-		hmcfgusb_send_null_frame(dev);
+		hmcfgusb_send_null_frame(dev, 1);
 		hmcfgusb_send(dev, (unsigned char*)"K", 1, 1);
 
 		while(!quit) {
@@ -210,7 +210,7 @@ int main(int argc, char **argv)
 					break;
 				} else {
 					/* periodically wakeup the device */
-					hmcfgusb_send_null_frame(dev);
+					hmcfgusb_send_null_frame(dev, 1);
 				}
 			}
 		}
-- 
2.39.2