[PATCH net-next] net: phy: realtek: get rid of magic numbers in rtl8201_config_intr()

[Aleksander Jan Bajkowski <olek2@wp.pl>]

Replace the magic numbers with defines. Register names were obtained from
publicly available documentation[1]. This should make it clear what's going
on in the code.

1. RTL8201F/RTL8201FL/RTL8201FN Rev. 1.4 Datasheet
Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl>
---
 drivers/net/phy/realtek/realtek_main.c | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/drivers/net/phy/realtek/realtek_main.c b/drivers/net/phy/realtek/realtek_main.c
index 75565fbdbf6d..e78f3b9e89db 100644
--- a/drivers/net/phy/realtek/realtek_main.c
+++ b/drivers/net/phy/realtek/realtek_main.c
@@ -22,7 +22,14 @@
 #include "../phylib.h"
 #include "realtek.h"
 
+#define RTL8201F_IER_PAGE			0x07
 #define RTL8201F_IER				0x13
+#define RTL8201F_IER_LINK			BIT(13)
+#define RTL8201F_IER_DUPLEX			BIT(12)
+#define RTL8201F_IER_ANERR			BIT(11)
+#define RTL8201F_IER_MASK			(RTL8201F_IER_ANERR | \
+						 RTL8201F_IER_DUPLEX | \
+						 RTL8201F_IER_LINK)
 
 #define RTL8201F_ISR				0x1e
 #define RTL8201F_ISR_ANERR			BIT(15)
@@ -346,11 +353,13 @@ static int rtl8201_config_intr(struct phy_device *phydev)
 		if (err)
 			return err;
 
-		val = BIT(13) | BIT(12) | BIT(11);
-		err = phy_write_paged(phydev, 0x7, RTL8201F_IER, val);
+		val = RTL8201F_IER_MASK;
+		err = phy_write_paged(phydev, RTL8201F_IER_PAGE,
+				      RTL8201F_IER, val);
 	} else {
 		val = 0;
-		err = phy_write_paged(phydev, 0x7, RTL8201F_IER, val);
+		err = phy_write_paged(phydev, RTL8201F_IER_PAGE,
+				      RTL8201F_IER, val);
 		if (err)
 			return err;
 
-- 
2.51.0