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[1/1] UBUNTU: SAUCE: r8169: fix firmware not resetting tp->ocp_base

Message ID 20200625062722.4080384-2-aaron.ma@canonical.com
State New
Headers show
Series Fix r8117 firmware base issue | expand

Commit Message

Aaron Ma June 25, 2020, 6:27 a.m. UTC
From: Heiner Kallweit <hkallweit1@gmail.com>

BugLink: https://bugs.launchpad.net/bugs/1885072

Typically the firmware takes care that tp->ocp_base is reset to its
default value. That's not the case (at least) for RTL8117.
As a result subsequent PHY access reads/writes the wrong page and
the link is broken. Fix this be resetting tp->ocp_base explicitly.

Fixes: 229c1e0dfd3d ("r8169: load firmware for RTL8168fp/RTL8117")
Reported-by: Aaron Ma <mapengyu@gmail.com>
Tested-by: Aaron Ma <mapengyu@gmail.com>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit 89fbd26cca7ec9e82ec4787a4b6e95939b57d073
https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git)
Signed-off-by: Aaron Ma <aaron.ma@canonical.com>
---
 drivers/net/ethernet/realtek/r8169_main.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c
index aecd64fa4881..e319aeddc648 100644
--- a/drivers/net/ethernet/realtek/r8169_main.c
+++ b/drivers/net/ethernet/realtek/r8169_main.c
@@ -2192,8 +2192,11 @@  static void rtl_release_firmware(struct rtl8169_private *tp)
 void r8169_apply_firmware(struct rtl8169_private *tp)
 {
 	/* TODO: release firmware if rtl_fw_write_firmware signals failure. */
-	if (tp->rtl_fw)
+	if (tp->rtl_fw) {
 		rtl_fw_write_firmware(tp, tp->rtl_fw);
+		/* At least one firmware doesn't reset tp->ocp_base. */
+		tp->ocp_base = OCP_STD_PHY_BASE;
+	}
 }
 
 static void rtl8168_config_eee_mac(struct rtl8169_private *tp)