Correct (signedness) issues detected by -Wall

[libftdi] / src / ftdi.c

diff --git a/src/ftdi.c b/src/ftdi.c
index 525f9d1..30b5b55 100644 (file)
--- a/src/ftdi.c
+++ b/src/ftdi.c
@@ -2659,7 +2659,7 @@ int ftdi_read_eeprom_location (struct ftdi_context *ftdi, int eeprom_addr, unsig
     if (ftdi == NULL || ftdi->usb_dev == NULL)
         ftdi_error_return(-2, "USB device unavailable");
 
-    if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_IN_REQTYPE, SIO_READ_EEPROM_REQUEST, 0, eeprom_addr, (char *)eeprom_val, 2, ftdi->usb_read_timeout) != 2)
+    if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_IN_REQTYPE, SIO_READ_EEPROM_REQUEST, 0, eeprom_addr, (unsigned char *)eeprom_val, 2, ftdi->usb_read_timeout) != 2)
         ftdi_error_return(-1, "reading eeprom failed");
 
     return 0;