Change in coreboot[master]: drivers/intel/i210: Define MAC_ADDR_LEN

[Patrick Georgi (Code Review)]

Patrick Georgi has submitted this change. ( https://review.coreboot.org/c/coreboot/+/47404 )

Change subject: drivers/intel/i210: Define MAC_ADDR_LEN
......................................................................

drivers/intel/i210: Define MAC_ADDR_LEN

Define and use the MAC_ADDR_LEN macro in place of the `6` magic value.

Change-Id: Icfa2ad9bca6668bea3d84b10f613d01e437ac6a2
Signed-off-by: Angel Pons 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/47404
Tested-by: siemens-bot
Tested-by: build bot (Jenkins) 
Reviewed-by: Werner Zeh 
---
M src/drivers/intel/i210/i210.h
M src/mainboard/siemens/mc_apl1/mainboard.c
2 files changed, 7 insertions(+), 6 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  siemens-bot: Verified
  Werner Zeh: Looks good to me, approved

diff --git a/src/drivers/intel/i210/i210.h b/src/drivers/intel/i210/i210.h
index 718992e..1cc6a28 100644
--- a/src/drivers/intel/i210/i210.h
+++ b/src/drivers/intel/i210/i210.h
@@ -27,9 +27,10 @@
 #define I210_CHECKSUM_ERROR	0x00000010
 #define I210_FLASH_UPDATE_ERROR	0x00000020

+#define MAC_ADDR_LEN		6
+
 /* We need one function we can call to get a MAC address to use */
 /* This function can be coded somewhere else but must exist. */
-extern enum cb_err mainboard_get_mac_address(struct device *dev,
-						uint8_t mac[6]);
+extern enum cb_err mainboard_get_mac_address(struct device *dev, uint8_t mac[MAC_ADDR_LEN]);

#endif /* _INTEL_I210_H_ */
diff --git a/src/mainboard/siemens/mc_apl1/mainboard.c b/src/mainboard/siemens/mc_apl1/mainboard.c
index 5b8f70f..ff0cc59 100644
--- a/src/mainboard/siemens/mc_apl1/mainboard.c
+++ b/src/mainboard/siemens/mc_apl1/mainboard.c
@@ -33,9 +33,9 @@
  * @param  mac  Buffer to the MAC address to check
  * @return 0    if address is not valid, otherwise 1
  */
-static uint8_t is_mac_adr_valid(uint8_t mac[6])
+static uint8_t is_mac_adr_valid(uint8_t mac[MAC_ADDR_LEN])
 {
-	uint8_t buf[6];
+	uint8_t buf[MAC_ADDR_LEN];

memset(buf, 0, sizeof(buf));
    if (!memcmp(buf, mac, sizeof(buf)))
@@ -52,7 +52,7 @@
  * @param  mac     buffer where to store the MAC address
  * @return cb_err  CB_ERR or CB_SUCCESS
  */
-enum cb_err mainboard_get_mac_address(struct device *dev, uint8_t mac[6])
+enum cb_err mainboard_get_mac_address(struct device *dev, uint8_t mac[MAC_ADDR_LEN])
 {
    struct bus *parent = dev->bus;
    uint8_t buf[16], mapping[16], i = 0, chain_len = 0;
@@ -92,7 +92,7 @@
    	if (memcmp(buf, mapping, chain_len + 4))
    		continue;
    	/* There is a matching mapping available, get MAC address. */
-		if (hwilib_get_field(XMac1 + i, mac, 6) == 6) {
+		if (hwilib_get_field(XMac1 + i, mac, MAC_ADDR_LEN) == MAC_ADDR_LEN) {
    		if (is_mac_adr_valid(mac))
    			return CB_SUCCESS;
    	}