kernel: delete Linux 5.4 config and patches

As the upcoming release will be based on Linux 5.10 only, remove all
kernel configuration as well as patches for Linux 5.4.
There were no targets still actively using Linux 5.4.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
(cherry picked from commit 3a14580411adfb75f9a44eded9f41245b9e44606)

1 files changed, 0 insertions, 198 deletions

diff --git a/target/linux/generic/backport-5.4/736-v5.5-net-sfp-allow-modules-with-slow-diagnostics-to-probe.patch b/target/linux/generic/backport-5.4/736-v5.5-net-sfp-allow-modules-with-slow-diagnostics-to-probe.patch
deleted file mode 100644
index e6c1fd71d8..0000000000
--- a/target/linux/generic/backport-5.4/736-v5.5-net-sfp-allow-modules-with-slow-diagnostics-to-probe.patch
+++ /dev/null
@@ -1,198 +0,0 @@
-From 559391fc20fae506adcb311b904cc544c76436c0 Mon Sep 17 00:00:00 2001
-From: Russell King <rmk+kernel@armlinux.org.uk>
-Date: Thu, 7 Nov 2019 18:52:07 +0000
-Subject: [PATCH 634/660] net: sfp: allow modules with slow diagnostics to
- probe
-
-When a module is inserted, we attempt to read read the ID from address
-0x50.  Once we are able to read the ID, we immediately attempt to
-initialise the hwmon support by reading from address 0x51.  If this
-fails, then we fall into error state, and assume that the module is
-not usable.
-
-Modules such as the ALCATELLUCENT 3FE46541AA use a real EEPROM for
-I2C address 0x50, which responds immediately.  However, address 0x51
-is an emulated, which only becomes available once the on-board firmware
-has booted.  This prompts us to fall into the error state.
-
-Since the module may be usable without diagnostics, arrange for the
-hwmon probe independent of the rest of the SFP itself, retrying every
-5s for up to about 60s for the monitoring to become available, and
-print an error message if it doesn't become available.
-
-Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
----
- drivers/net/phy/sfp.c | 96 +++++++++++++++++++++++++++++++++----------
- 1 file changed, 74 insertions(+), 22 deletions(-)
-
---- a/drivers/net/phy/sfp.c
-+++ b/drivers/net/phy/sfp.c
-@@ -218,6 +218,8 @@ struct sfp {
- 
- #if IS_ENABLED(CONFIG_HWMON)
- 	struct sfp_diag diag;
-+	struct delayed_work hwmon_probe;
-+	unsigned int hwmon_tries;
- 	struct device *hwmon_dev;
- 	char *hwmon_name;
- #endif
-@@ -1159,29 +1161,27 @@ static const struct hwmon_chip_info sfp_
- 	.info = sfp_hwmon_info,
- };
- 
--static int sfp_hwmon_insert(struct sfp *sfp)
-+static void sfp_hwmon_probe(struct work_struct *work)
- {
-+	struct sfp *sfp = container_of(work, struct sfp, hwmon_probe.work);
- 	int err, i;
- 
--	if (sfp->id.ext.sff8472_compliance == SFP_SFF8472_COMPLIANCE_NONE)
--		return 0;
--
--	if (!(sfp->id.ext.diagmon & SFP_DIAGMON_DDM))
--		return 0;
--
--	if (sfp->id.ext.diagmon & SFP_DIAGMON_ADDRMODE)
--		/* This driver in general does not support address
--		 * change.
--		 */
--		return 0;
--
- 	err = sfp_read(sfp, true, 0, &sfp->diag, sizeof(sfp->diag));
--	if (err < 0)
--		return err;
-+	if (err < 0) {
-+		if (sfp->hwmon_tries--) {
-+			mod_delayed_work(system_wq, &sfp->hwmon_probe,
-+					 T_PROBE_RETRY_SLOW);
-+		} else {
-+			dev_warn(sfp->dev, "hwmon probe failed: %d\n", err);
-+		}
-+		return;
-+	}
- 
- 	sfp->hwmon_name = kstrdup(dev_name(sfp->dev), GFP_KERNEL);
--	if (!sfp->hwmon_name)
--		return -ENODEV;
-+	if (!sfp->hwmon_name) {
-+		dev_err(sfp->dev, "out of memory for hwmon name\n");
-+		return;
-+	}
- 
- 	for (i = 0; sfp->hwmon_name[i]; i++)
- 		if (hwmon_is_bad_char(sfp->hwmon_name[i]))
-@@ -1191,18 +1191,52 @@ static int sfp_hwmon_insert(struct sfp *
- 							 sfp->hwmon_name, sfp,
- 							 &sfp_hwmon_chip_info,
- 							 NULL);
-+	if (IS_ERR(sfp->hwmon_dev))
-+		dev_err(sfp->dev, "failed to register hwmon device: %ld\n",
-+			PTR_ERR(sfp->hwmon_dev));
-+}
-+
-+static int sfp_hwmon_insert(struct sfp *sfp)
-+{
-+	if (sfp->id.ext.sff8472_compliance == SFP_SFF8472_COMPLIANCE_NONE)
-+		return 0;
-+
-+	if (!(sfp->id.ext.diagmon & SFP_DIAGMON_DDM))
-+		return 0;
-+
-+	if (sfp->id.ext.diagmon & SFP_DIAGMON_ADDRMODE)
-+		/* This driver in general does not support address
-+		 * change.
-+		 */
-+		return 0;
-+
-+	mod_delayed_work(system_wq, &sfp->hwmon_probe, 1);
-+	sfp->hwmon_tries = R_PROBE_RETRY_SLOW;
- 
--	return PTR_ERR_OR_ZERO(sfp->hwmon_dev);
-+	return 0;
- }
- 
- static void sfp_hwmon_remove(struct sfp *sfp)
- {
-+	cancel_delayed_work_sync(&sfp->hwmon_probe);
- 	if (!IS_ERR_OR_NULL(sfp->hwmon_dev)) {
- 		hwmon_device_unregister(sfp->hwmon_dev);
- 		sfp->hwmon_dev = NULL;
- 		kfree(sfp->hwmon_name);
- 	}
- }
-+
-+static int sfp_hwmon_init(struct sfp *sfp)
-+{
-+	INIT_DELAYED_WORK(&sfp->hwmon_probe, sfp_hwmon_probe);
-+
-+	return 0;
-+}
-+
-+static void sfp_hwmon_exit(struct sfp *sfp)
-+{
-+	cancel_delayed_work_sync(&sfp->hwmon_probe);
-+}
- #else
- static int sfp_hwmon_insert(struct sfp *sfp)
- {
-@@ -1212,6 +1246,15 @@ static int sfp_hwmon_insert(struct sfp *
- static void sfp_hwmon_remove(struct sfp *sfp)
- {
- }
-+
-+static int sfp_hwmon_init(struct sfp *sfp)
-+{
-+	return 0;
-+}
-+
-+static void sfp_hwmon_exit(struct sfp *sfp)
-+{
-+}
- #endif
- 
- /* Helpers */
-@@ -1548,10 +1591,6 @@ static int sfp_sm_mod_probe(struct sfp *
- 	if (ret < 0)
- 		return ret;
- 
--	ret = sfp_hwmon_insert(sfp);
--	if (ret < 0)
--		return ret;
--
- 	return 0;
- }
- 
-@@ -1700,6 +1739,15 @@ static void sfp_sm_module(struct sfp *sf
- 	case SFP_MOD_ERROR:
- 		break;
- 	}
-+
-+#if IS_ENABLED(CONFIG_HWMON)
-+	if (sfp->sm_mod_state >= SFP_MOD_WAITDEV &&
-+	    IS_ERR_OR_NULL(sfp->hwmon_dev)) {
-+		err = sfp_hwmon_insert(sfp);
-+		if (err)
-+			dev_warn(sfp->dev, "hwmon probe failed: %d\n", err);
-+	}
-+#endif
- }
- 
- static void sfp_sm_main(struct sfp *sfp, unsigned int event)
-@@ -2001,6 +2049,8 @@ static struct sfp *sfp_alloc(struct devi
- 	INIT_DELAYED_WORK(&sfp->poll, sfp_poll);
- 	INIT_DELAYED_WORK(&sfp->timeout, sfp_timeout);
- 
-+	sfp_hwmon_init(sfp);
-+
- 	return sfp;
- }
- 
-@@ -2008,6 +2058,8 @@ static void sfp_cleanup(void *data)
- {
- 	struct sfp *sfp = data;
- 
-+	sfp_hwmon_exit(sfp);
-+
- 	cancel_delayed_work_sync(&sfp->poll);
- 	cancel_delayed_work_sync(&sfp->timeout);
- 	if (sfp->i2c_mii) {