Fix signedness to make gcc happy.

3 files changed, 4 insertions, 4 deletions

diff --git a/sys/boot/arm/at91/libat91/eeprom.c b/sys/boot/arm/at91/libat91/eeprom.c
index 8af411b..f5fc52b 100644
--- a/sys/boot/arm/at91/libat91/eeprom.c
+++ b/sys/boot/arm/at91/libat91/eeprom.c
@@ -83,7 +83,7 @@ InitEEPROM(void)
  * .KB_C_FN_DEFINITION_END
  */
 int
-ReadEEPROM(unsigned ee_off, char *data_addr, unsigned size)
+ReadEEPROM(unsigned ee_off, unsigned char *data_addr, unsigned size)
 {
 	const AT91PS_TWI 	twiPtr = AT91C_BASE_TWI;
 	unsigned int status;
@@ -145,7 +145,7 @@ WriteEEPROM(unsigned ee_off, char *data_addr, unsigned size)
 {
 	const AT91PS_TWI 	twiPtr = AT91C_BASE_TWI;
 	unsigned		status;
-	char			test_data;
+	unsigned char		test_data;
 
 	while (size--) {
 		if (!(ee_off & 0x3f))
diff --git a/sys/boot/arm/at91/libat91/emac.c b/sys/boot/arm/at91/libat91/emac.c
index b72e5c1..2ec715f 100644
--- a/sys/boot/arm/at91/libat91/emac.c
+++ b/sys/boot/arm/at91/libat91/emac.c
@@ -199,7 +199,7 @@ TFTP_RequestFile(char *filename)
  * .KB_C_FN_DEFINITION_END
  */
 static void
-TFTP_ACK_Data(char *data, unsigned short block_num, unsigned short len)
+TFTP_ACK_Data(unsigned char *data, unsigned short block_num, unsigned short len)
 {
 	tftp_header_t	tftpHeader;
 
diff --git a/sys/boot/arm/at91/libat91/lib.h b/sys/boot/arm/at91/libat91/lib.h
index a0ef8ec..24ac49f 100644
--- a/sys/boot/arm/at91/libat91/lib.h
+++ b/sys/boot/arm/at91/libat91/lib.h
@@ -34,7 +34,7 @@ void printf(const char *fmt,...);
 
 /* The following function write eeprom at ee_addr using data 	*/
 /*  from data_add for size bytes.				*/
-int ReadEEPROM(unsigned eeoff, char *data_addr, unsigned size);
+int ReadEEPROM(unsigned eeoff, unsigned char *data_addr, unsigned size);
 void WriteEEPROM(unsigned eeoff, char *data_addr, unsigned size);
 void InitEEPROM(void);