am7xxx: initialize the 'transferred' variable before USB transfers

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

diff --git a/src/am7xxx.c b/src/am7xxx.c
index 7ef981e..c02b539 100644 (file)
--- a/src/am7xxx.c
+++ b/src/am7xxx.c
@@ -181,7 +181,7 @@ static void dump_buffer(uint8_t *buffer, unsigned int len)
 static int read_data(am7xxx_device dev, uint8_t *buffer, unsigned int len)
 {
        int ret;
-       int transferred;
+       int transferred = 0;
 
        ret = libusb_bulk_transfer(dev, 0x81, buffer, len, &transferred, 0);
        if (ret != 0 || (unsigned int)transferred != len) {
@@ -202,7 +202,7 @@ static int read_data(am7xxx_device dev, uint8_t *buffer, unsigned int len)
 static int send_data(am7xxx_device dev, uint8_t *buffer, unsigned int len)
 {
        int ret;
-       int transferred;
+       int transferred = 0;
 
 #if DEBUG
        printf("\nsending -->\n");