kernel: remove support for kernel 4.19

We use 5.4 on all targets by default, and 4.19 has never been released
in a stable version. There is no reason to keep it.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

1 files changed, 0 insertions, 63 deletions

diff --git a/target/linux/generic/backport-4.19/740-v5.5-net-phy-avoid-matching-all-ones-clause-45-PHY-IDs.patch b/target/linux/generic/backport-4.19/740-v5.5-net-phy-avoid-matching-all-ones-clause-45-PHY-IDs.patch
deleted file mode 100644
index 56bf507720..0000000000
--- a/target/linux/generic/backport-4.19/740-v5.5-net-phy-avoid-matching-all-ones-clause-45-PHY-IDs.patch
+++ /dev/null
@@ -1,63 +0,0 @@
-From 1be8018db381200c24854e0c299206c557f76fe0 Mon Sep 17 00:00:00 2001
-From: Russell King <rmk+kernel@armlinux.org.uk>
-Date: Mon, 11 Nov 2019 11:58:09 +0000
-Subject: [PATCH 638/660] net: phy: avoid matching all-ones clause 45 PHY IDs
-
-We currently match clause 45 PHYs using any ID read from a MMD marked
-as present in the "Devices in package" registers 5 and 6.  However,
-this is incorrect.  45.2 says:
-
-  "The definition of the term package is vendor specific and could be
-   a chip, module, or other similar entity."
-
-so a package could be more or less than the whole PHY - a PHY could be
-made up of several modules instantiated onto a single chip such as the
-Marvell 88x3310, or some of the MMDs could be disabled according to
-chip configuration, such as the Broadcom 84881.
-
-In the case of Broadcom 84881, the "Devices in package" registers
-contain 0xc000009b, meaning that there is a PHYXS present in the
-package, but all registers in MMD 4 return 0xffff.  This leads to our
-matching code incorrectly binding this PHY to one of our generic PHY
-drivers.
-
-This patch changes the way we determine whether to attempt to match a
-MMD identifier, or use it to request a module - if the identifier is
-all-ones, then we skip over it. When reading the identifiers, we
-initialise phydev->c45_ids.device_ids to all-ones, only reading the
-device ID if the "Devices in package" registers indicates we should.
-
-This avoids the generic drivers incorrectly matching on a PHY ID of
-0xffffffff.
-
-Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
----
- drivers/net/phy/phy_device.c | 7 +++++--
- 1 file changed, 5 insertions(+), 2 deletions(-)
-
---- a/drivers/net/phy/phy_device.c
-+++ b/drivers/net/phy/phy_device.c
-@@ -339,7 +339,7 @@ static int phy_bus_match(struct device *
- 
- 	if (phydev->is_c45) {
- 		for (i = 1; i < num_ids; i++) {
--			if (!(phydev->c45_ids.devices_in_package & (1 << i)))
-+			if (phydev->c45_ids.device_ids[i] == 0xffffffff)
- 				continue;
- 
- 			if ((phydrv->phy_id & phydrv->phy_id_mask) ==
-@@ -629,10 +629,13 @@ static int get_phy_id(struct mii_bus *bu
-  */
- struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45)
- {
--	struct phy_c45_device_ids c45_ids = {0};
-+	struct phy_c45_device_ids c45_ids;
- 	u32 phy_id = 0;
- 	int r;
- 
-+	c45_ids.devices_in_package = 0;
-+	memset(c45_ids.device_ids, 0xff, sizeof(c45_ids.device_ids));
-+
- 	r = get_phy_id(bus, addr, &phy_id, is_c45, &c45_ids);
- 	if (r)
- 		return ERR_PTR(r);