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>

1 files changed, 0 insertions, 184 deletions

diff --git a/target/linux/generic/backport-5.4/733-v5.5-net-sfp-split-power-mode-switching-from-probe.patch b/target/linux/generic/backport-5.4/733-v5.5-net-sfp-split-power-mode-switching-from-probe.patch
deleted file mode 100644
index f645e44191..0000000000
--- a/target/linux/generic/backport-5.4/733-v5.5-net-sfp-split-power-mode-switching-from-probe.patch
+++ /dev/null
@@ -1,184 +0,0 @@
-From fdff863a4ce3677907f64396e34c45025abb6600 Mon Sep 17 00:00:00 2001
-From: Russell King <rmk+kernel@armlinux.org.uk>
-Date: Tue, 5 Nov 2019 12:59:36 +0000
-Subject: [PATCH 631/660] net: sfp: split power mode switching from probe
-
-Switch the power mode switching from the probe, so that we don't
-repeatedly re-probe the SFP device if there is a problem accessing
-the registers at I2C address 0x51.
-
-In splitting this out, we can also fix a bug where we leave the module
-in high-power mode when the upstream device is detached but the module
-is still inserted.
-
-Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
----
- drivers/net/phy/sfp.c | 101 ++++++++++++++++++++++++++----------------
- 1 file changed, 64 insertions(+), 37 deletions(-)
-
---- a/drivers/net/phy/sfp.c
-+++ b/drivers/net/phy/sfp.c
-@@ -49,6 +49,7 @@ enum {
- 	SFP_MOD_EMPTY = 0,
- 	SFP_MOD_PROBE,
- 	SFP_MOD_HPOWER,
-+	SFP_MOD_WAITPWR,
- 	SFP_MOD_PRESENT,
- 	SFP_MOD_ERROR,
- 
-@@ -71,6 +72,7 @@ static const char  * const mod_state_str
- 	[SFP_MOD_EMPTY] = "empty",
- 	[SFP_MOD_PROBE] = "probe",
- 	[SFP_MOD_HPOWER] = "hpower",
-+	[SFP_MOD_WAITPWR] = "waitpwr",
- 	[SFP_MOD_PRESENT] = "present",
- 	[SFP_MOD_ERROR] = "error",
- };
-@@ -1423,37 +1425,34 @@ static int sfp_module_parse_power(struct
- 	return 0;
- }
- 
--static int sfp_sm_mod_hpower(struct sfp *sfp)
-+static int sfp_sm_mod_hpower(struct sfp *sfp, bool enable)
- {
- 	u8 val;
- 	int err;
- 
--	if (sfp->module_power_mW <= 1000)
--		return 0;
--
- 	err = sfp_read(sfp, true, SFP_EXT_STATUS, &val, sizeof(val));
- 	if (err != sizeof(val)) {
- 		dev_err(sfp->dev, "Failed to read EEPROM: %d\n", err);
--		err = -EAGAIN;
--		goto err;
-+		return -EAGAIN;
- 	}
- 
--	val |= BIT(0);
-+	if (enable)
-+		val |= BIT(0);
-+	else
-+		val &= ~BIT(0);
- 
- 	err = sfp_write(sfp, true, SFP_EXT_STATUS, &val, sizeof(val));
- 	if (err != sizeof(val)) {
- 		dev_err(sfp->dev, "Failed to write EEPROM: %d\n", err);
--		err = -EAGAIN;
--		goto err;
-+		return -EAGAIN;
- 	}
- 
--	dev_info(sfp->dev, "Module switched to %u.%uW power level\n",
--		 sfp->module_power_mW / 1000,
--		 (sfp->module_power_mW / 100) % 10);
--	return T_HPOWER_LEVEL;
-+	if (enable)
-+		dev_info(sfp->dev, "Module switched to %u.%uW power level\n",
-+			 sfp->module_power_mW / 1000,
-+			 (sfp->module_power_mW / 100) % 10);
- 
--err:
--	return err;
-+	return 0;
- }
- 
- static int sfp_sm_mod_probe(struct sfp *sfp)
-@@ -1549,7 +1548,7 @@ static int sfp_sm_mod_probe(struct sfp *
- 	if (ret < 0)
- 		return ret;
- 
--	return sfp_sm_mod_hpower(sfp);
-+	return 0;
- }
- 
- static void sfp_sm_mod_remove(struct sfp *sfp)
-@@ -1594,13 +1593,22 @@ static void sfp_sm_device(struct sfp *sf
-  */
- static void sfp_sm_module(struct sfp *sfp, unsigned int event)
- {
--	/* Handle remove event globally, it resets this state machine.
--	 * Also deal with upstream detachment.
--	 */
--	if (event == SFP_E_REMOVE || sfp->sm_dev_state < SFP_DEV_DOWN) {
-+	int err;
-+
-+	/* Handle remove event globally, it resets this state machine */
-+	if (event == SFP_E_REMOVE) {
- 		if (sfp->sm_mod_state > SFP_MOD_PROBE)
- 			sfp_sm_mod_remove(sfp);
--		if (sfp->sm_mod_state != SFP_MOD_EMPTY)
-+		sfp_sm_mod_next(sfp, SFP_MOD_EMPTY, 0);
-+		return;
-+	}
-+
-+	/* Handle device detach globally */
-+	if (sfp->sm_dev_state < SFP_DEV_DOWN) {
-+		if (sfp->module_power_mW > 1000 &&
-+		    sfp->sm_mod_state > SFP_MOD_HPOWER)
-+			sfp_sm_mod_hpower(sfp, false);
-+		if (sfp->sm_mod_state > SFP_MOD_EMPTY)
- 			sfp_sm_mod_next(sfp, SFP_MOD_EMPTY, 0);
- 		return;
- 	}
-@@ -1612,26 +1620,45 @@ static void sfp_sm_module(struct sfp *sf
- 		break;
- 
- 	case SFP_MOD_PROBE:
--		if (event == SFP_E_TIMEOUT) {
--			int val = sfp_sm_mod_probe(sfp);
-+		if (event != SFP_E_TIMEOUT)
-+			break;
- 
--			if (val == 0)
--				sfp_sm_mod_next(sfp, SFP_MOD_PRESENT, 0);
--			else if (val > 0)
--				sfp_sm_mod_next(sfp, SFP_MOD_HPOWER, val);
--			else if (val != -EAGAIN)
--				sfp_sm_mod_next(sfp, SFP_MOD_ERROR, 0);
--			else
--				sfp_sm_set_timer(sfp, T_PROBE_RETRY);
-+		err = sfp_sm_mod_probe(sfp);
-+		if (err == -EAGAIN) {
-+			sfp_sm_set_timer(sfp, T_PROBE_RETRY);
-+			break;
- 		}
--		break;
-+		if (err < 0) {
-+			sfp_sm_mod_next(sfp, SFP_MOD_ERROR, 0);
-+			break;
-+		}
-+
-+		/* If this is a power level 1 module, we are done */
-+		if (sfp->module_power_mW <= 1000)
-+			goto insert;
- 
-+		sfp_sm_mod_next(sfp, SFP_MOD_HPOWER, 0);
-+		/* fall through */
- 	case SFP_MOD_HPOWER:
--		if (event == SFP_E_TIMEOUT) {
--			sfp_sm_mod_next(sfp, SFP_MOD_PRESENT, 0);
-+		/* Enable high power mode */
-+		err = sfp_sm_mod_hpower(sfp, true);
-+		if (err == 0)
-+			sfp_sm_mod_next(sfp, SFP_MOD_WAITPWR, T_HPOWER_LEVEL);
-+		else if (err != -EAGAIN)
-+			sfp_sm_mod_next(sfp, SFP_MOD_ERROR, 0);
-+		else
-+			sfp_sm_set_timer(sfp, T_PROBE_RETRY);
-+		break;
-+
-+	case SFP_MOD_WAITPWR:
-+		/* Wait for T_HPOWER_LEVEL to time out */
-+		if (event != SFP_E_TIMEOUT)
- 			break;
--		}
--		/* fallthrough */
-+
-+	insert:
-+		sfp_sm_mod_next(sfp, SFP_MOD_PRESENT, 0);
-+		break;
-+
- 	case SFP_MOD_PRESENT:
- 	case SFP_MOD_ERROR:
- 		break;