kinect_upload_fw: initialize 'transferred' before USB transfers

This makes sure the subsequent error messages print a sane value when
libusb fails without touching the variable.

diff --git a/kinect_upload_fw/kinect_upload_fw.c b/kinect_upload_fw/kinect_upload_fw.c
index e544df4..b2188d6 100644 (file)
--- a/kinect_upload_fw/kinect_upload_fw.c
+++ b/kinect_upload_fw/kinect_upload_fw.c
@@ -77,7 +77,7 @@ static void dump_bl_cmd(bootloader_command cmd) {
 static int get_first_reply(void) {
        unsigned char buffer[512];
        int res;
-       int transferred;
+       int transferred = 0;
        res = libusb_bulk_transfer(dev, 0x81, buffer, 512, &transferred, 0);
        if (res != 0 ) {
                LOG("Error reading first reply: %d\ttransferred: %d (expected %d)\n", res, transferred, 0x60);
@@ -101,7 +101,7 @@ static int get_reply(void) {
                unsigned char dump[512];
        } reply;
        int res;
-       int transferred;
+       int transferred = 0;
 
        res = libusb_bulk_transfer(dev, 0x81, reply.dump, 512, &transferred, 0);
        if (res != 0 || transferred != sizeof(status_code)) {
@@ -171,7 +171,7 @@ int main(int argc, char** argv) {
        LOG("About to send: ");
        dump_bl_cmd(cmd);
 
-       int transferred;
+       int transferred = 0;
 
        res = libusb_bulk_transfer(dev, 1, (unsigned char*)&cmd, sizeof(cmd), &transferred, 0);
        if (res != 0 || transferred != sizeof(cmd)) {
@@ -202,6 +202,7 @@ int main(int argc, char** argv) {
                LOG("About to send: ");
                dump_bl_cmd(cmd);
                // Send it off!
+               transferred = 0;
                res = libusb_bulk_transfer(dev, 1, (unsigned char*)&cmd, sizeof(cmd), &transferred, 0);
                if (res != 0 || transferred != sizeof(cmd)) {
                        LOG("Error: res: %d\ttransferred: %d (expected %zu)\n", res, transferred, sizeof(cmd));
@@ -210,6 +211,7 @@ int main(int argc, char** argv) {
                int bytes_sent = 0;
                while (bytes_sent < read) {
                        int to_send = (read - bytes_sent > 512 ? 512 : read - bytes_sent);
+                       transferred = 0;
                        res = libusb_bulk_transfer(dev, 1, &page[bytes_sent], to_send, &transferred, 0);
                        if (res != 0 || transferred != to_send) {
                                LOG("Error: res: %d\ttransferred: %d (expected %d)\n", res, transferred, to_send);
@@ -228,6 +230,7 @@ int main(int argc, char** argv) {
        cmd.cmd = fn_le32(0x04);
        cmd.write_addr = fn_le32(0x00080030);
        dump_bl_cmd(cmd);
+       transferred = 0;
        res = libusb_bulk_transfer(dev, 1, (unsigned char*)&cmd, sizeof(cmd), &transferred, 0);
        if (res != 0 || transferred != sizeof(cmd)) {
                LOG("Error: res: %d\ttransferred: %d (expected %zu)\n", res, transferred, sizeof(cmd));