r8169: make use of the unaligned access helpers

Instead of open-coding unaligned access let's use the predefined
unaligned access helpers.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/cfaf9176-e4f9-c32d-4d4d-e8fb52009f35@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c
index bfcc64d..dbf0c29 100644 (file)
--- a/drivers/net/ethernet/realtek/r8169_main.c
+++ b/drivers/net/ethernet/realtek/r8169_main.c
@@ -28,6 +28,7 @@
 #include <linux/bitfield.h>
 #include <linux/prefetch.h>
 #include <linux/ipv6.h>
+#include <asm/unaligned.h>
 #include <net/ip6_checksum.h>
 
 #include "r8169.h"
@@ -2104,18 +2105,12 @@ static void rtl8125b_config_eee_mac(struct rtl8169_private *tp)
        r8168_mac_ocp_modify(tp, 0xe040, 0, BIT(1) | BIT(0));
 }
 
-static void rtl_rar_exgmac_set(struct rtl8169_private *tp, u8 *addr)
+static void rtl_rar_exgmac_set(struct rtl8169_private *tp, const u8 *addr)
 {
-       const u16 w[] = {
-               addr[0] | (addr[1] << 8),
-               addr[2] | (addr[3] << 8),
-               addr[4] | (addr[5] << 8)
-       };
-
-       rtl_eri_write(tp, 0xe0, ERIAR_MASK_1111, w[0] | (w[1] << 16));
-       rtl_eri_write(tp, 0xe4, ERIAR_MASK_1111, w[2]);
-       rtl_eri_write(tp, 0xf0, ERIAR_MASK_1111, w[0] << 16);
-       rtl_eri_write(tp, 0xf4, ERIAR_MASK_1111, w[1] | (w[2] << 16));
+       rtl_eri_write(tp, 0xe0, ERIAR_MASK_1111, get_unaligned_le32(addr));
+       rtl_eri_write(tp, 0xe4, ERIAR_MASK_1111, get_unaligned_le16(addr + 4));
+       rtl_eri_write(tp, 0xf0, ERIAR_MASK_1111, get_unaligned_le16(addr) << 16);
+       rtl_eri_write(tp, 0xf4, ERIAR_MASK_1111, get_unaligned_le32(addr + 2));
 }
 
 u16 rtl8168h_2_get_adc_bias_ioffset(struct rtl8169_private *tp)
@@ -2165,14 +2160,14 @@ static void rtl8169_init_phy(struct rtl8169_private *tp)
        genphy_soft_reset(tp->phydev);
 }
 
-static void rtl_rar_set(struct rtl8169_private *tp, u8 *addr)
+static void rtl_rar_set(struct rtl8169_private *tp, const u8 *addr)
 {
        rtl_unlock_config_regs(tp);
 
-       RTL_W32(tp, MAC4, addr[4] | addr[5] << 8);
+       RTL_W32(tp, MAC4, get_unaligned_le16(addr + 4));
        rtl_pci_commit(tp);
 
-       RTL_W32(tp, MAC0, addr[0] | addr[1] << 8 | addr[2] << 16 | addr[3] << 24);
+       RTL_W32(tp, MAC0, get_unaligned_le32(addr));
        rtl_pci_commit(tp);
 
        if (tp->mac_version == RTL_GIGA_MAC_VER_34)
@@ -4977,16 +4972,12 @@ static void rtl_read_mac_address(struct rtl8169_private *tp,
 {
        /* Get MAC address */
        if (rtl_is_8168evl_up(tp) && tp->mac_version != RTL_GIGA_MAC_VER_34) {
-               u32 value = rtl_eri_read(tp, 0xe0);
-
-               mac_addr[0] = (value >>  0) & 0xff;
-               mac_addr[1] = (value >>  8) & 0xff;
-               mac_addr[2] = (value >> 16) & 0xff;
-               mac_addr[3] = (value >> 24) & 0xff;
+               u32 value;
 
+               value = rtl_eri_read(tp, 0xe0);
+               put_unaligned_le32(value, mac_addr);
                value = rtl_eri_read(tp, 0xe4);
-               mac_addr[4] = (value >>  0) & 0xff;
-               mac_addr[5] = (value >>  8) & 0xff;
+               put_unaligned_le16(value, mac_addr + 4);
        } else if (rtl_is_8125(tp)) {
                rtl_read_mac_from_reg(tp, mac_addr, MAC0_BKP);
        }