bcm27xx: remove linux 5.10 compatibility

[openwrt/staging/chunkeey.git] / target / linux / bcm27xx / patches-5.10 / 950-0153-net-bcmgenet-Workaround-2-for-Pi4-Ethernet-fail.patch

diff --git a/target/linux/bcm27xx/patches-5.10/950-0153-net-bcmgenet-Workaround-2-for-Pi4-Ethernet-fail.patch b/target/linux/bcm27xx/patches-5.10/950-0153-net-bcmgenet-Workaround-2-for-Pi4-Ethernet-fail.patch
deleted file mode 100644 (file)
index ba0c063..0000000
--- a/target/linux/bcm27xx/patches-5.10/950-0153-net-bcmgenet-Workaround-2-for-Pi4-Ethernet-fail.patch
+++ /dev/null
@@ -1,51 +0,0 @@
-From 5d5a886b8ae7d18e6aeb44acd37fc4bd23ca1952 Mon Sep 17 00:00:00 2001
-From: Phil Elwell <phil@raspberrypi.org>
-Date: Fri, 9 Aug 2019 08:51:43 +0100
-Subject: [PATCH] net: bcmgenet: Workaround #2 for Pi4 Ethernet fail
-
-Some combinations of Pi 4Bs and Ethernet switches don't reliably get a
-DCHP-assigned IP address, leaving the unit with a self=assigned 169.254
-address. In the failure case, the Pi is left able to receive packets
-but not send them, suggesting that the MAC<->PHY link is getting into
-a bad state.
-
-It has been found empirically that skipping a reset step by the genet
-driver prevents the failures. No downsides have been discovered yet,
-and unlike the forced renegotiation it doesn't increase the time to
-get an IP address, so the workaround is enabled by default; add
-
-  genet.skip_umac_reset=n
-
-to the command line to disable it.
-
-See: https://github.com/raspberrypi/linux/issues/3108
-
-Signed-off-by: Phil Elwell <phil@raspberrypi.org>
----
- drivers/net/ethernet/broadcom/genet/bcmgenet.c | 8 ++++++++
- 1 file changed, 8 insertions(+)
-
---- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
-+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
-@@ -67,6 +67,9 @@
- 
- /* Forward declarations */
- static void bcmgenet_set_rx_mode(struct net_device *dev);
-+static bool skip_umac_reset = true;
-+module_param(skip_umac_reset, bool, 0444);
-+MODULE_PARM_DESC(skip_umac_reset, "Skip UMAC reset step");
- 
- static inline void bcmgenet_writel(u32 value, void __iomem *offset)
- {
-@@ -2435,6 +2438,11 @@ static void reset_umac(struct bcmgenet_p
-       bcmgenet_rbuf_ctrl_set(priv, 0);
-       udelay(10);
- 
-+      if (skip_umac_reset) {
-+              pr_warn("Skipping UMAC reset\n");
-+              return;
-+      }
-+
-       /* issue soft reset and disable MAC while updating its registers */
-       bcmgenet_umac_writel(priv, CMD_SW_RESET, UMAC_CMD);
-       udelay(2);