libftdi_write_data: argument #2 should be const

[libftdi] / src / ftdi.c

diff --git a/src/ftdi.c b/src/ftdi.c
index 3c86456..8124985 100644 (file)
--- a/src/ftdi.c
+++ b/src/ftdi.c
@@ -1369,7 +1369,7 @@ int ftdi_set_line_property2(struct ftdi_context *ftdi, enum ftdi_bits_type bits,
     \retval <0: error code from usb_bulk_write()
     \retval >0: number of bytes written
 */
-int ftdi_write_data(struct ftdi_context *ftdi, unsigned char *buf, int size)
+int ftdi_write_data(struct ftdi_context *ftdi, const unsigned char *buf, int size)
 {
     int offset = 0;
     int actual_length;
@@ -1384,7 +1384,7 @@ int ftdi_write_data(struct ftdi_context *ftdi, unsigned char *buf, int size)
         if (offset+write_size > size)
             write_size = size-offset;
 
-        if (libusb_bulk_transfer(ftdi->usb_dev, ftdi->in_ep, buf+offset, write_size, &actual_length, ftdi->usb_write_timeout) < 0)
+        if (libusb_bulk_transfer(ftdi->usb_dev, ftdi->in_ep, (unsigned char *)buf+offset, write_size, &actual_length, ftdi->usb_write_timeout) < 0)
             ftdi_error_return(-1, "usb bulk write failed");
 
         offset += actual_length;
@@ -4126,7 +4126,7 @@ int ftdi_write_eeprom_location(struct ftdi_context *ftdi, int eeprom_addr,
     }
 
     if (ftdi_read_eeprom_location( ftdi, chip_type_location>>1, &chip_type))
-        ftdi_error_return(-5, "Reading failed failed");
+        ftdi_error_return(-5, "Reading failed");
     fprintf(stderr," loc 0x%04x val 0x%04x\n", chip_type_location,chip_type);
     if ((chip_type & 0xff) != 0x66)
     {
@@ -4232,7 +4232,7 @@ int ftdi_erase_eeprom(struct ftdi_context *ftdi)
                                 NULL, 0, ftdi->usb_write_timeout) != 0)
         ftdi_error_return(-3, "Writing magic failed");
     if (ftdi_read_eeprom_location( ftdi, 0x00, &eeprom_value))
-        ftdi_error_return(-4, "Reading failed failed");
+        ftdi_error_return(-4, "Reading failed");
     if (eeprom_value == MAGIC)
     {
         ftdi->eeprom->chip = 0x46;
@@ -4240,13 +4240,13 @@ int ftdi_erase_eeprom(struct ftdi_context *ftdi)
     else
     {
         if (ftdi_read_eeprom_location( ftdi, 0x40, &eeprom_value))
-            ftdi_error_return(-4, "Reading failed failed");
+            ftdi_error_return(-4, "Reading failed");
         if (eeprom_value == MAGIC)
             ftdi->eeprom->chip = 0x56;
         else
         {
             if (ftdi_read_eeprom_location( ftdi, 0xc0, &eeprom_value))
-                ftdi_error_return(-4, "Reading failed failed");
+                ftdi_error_return(-4, "Reading failed");
             if (eeprom_value == MAGIC)
                 ftdi->eeprom->chip = 0x66;
             else