diff --git linux-libre-6.6.85-gnu/Makefile linux-libre-6.6.86-gnu/Makefile
index 7fe4b7865308..4dddf7aed4af 100644
--- linux-libre-6.6.85-gnu/Makefile
+++ linux-libre-6.6.86-gnu/Makefile
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 VERSION = 6
 PATCHLEVEL = 6
-SUBLEVEL = 85
+SUBLEVEL = 86
 EXTRAVERSION = -gnu
 NAME = Pinguïn Aangedreven
 
diff --git linux-libre-6.6.85-gnu/arch/arm/mm/fault.c linux-libre-6.6.86-gnu/arch/arm/mm/fault.c
index fef62e4a9edd..ed1a25f457e4 100644
--- linux-libre-6.6.85-gnu/arch/arm/mm/fault.c
+++ linux-libre-6.6.86-gnu/arch/arm/mm/fault.c
@@ -27,6 +27,13 @@
 
 #ifdef CONFIG_MMU
 
+bool copy_from_kernel_nofault_allowed(const void *unsafe_src, size_t size)
+{
+	unsigned long addr = (unsigned long)unsafe_src;
+
+	return addr >= TASK_SIZE && ULONG_MAX - addr >= size;
+}
+
 /*
  * This is useful to dump out the page tables associated with
  * 'addr' in mm 'mm'.
@@ -556,6 +563,7 @@ do_PrefetchAbort(unsigned long addr, unsigned int ifsr, struct pt_regs *regs)
 	if (!inf->fn(addr, ifsr | FSR_LNX_PF, regs))
 		return;
 
+	pr_alert("8<--- cut here ---\n");
 	pr_alert("Unhandled prefetch abort: %s (0x%03x) at 0x%08lx\n",
 		inf->name, ifsr, addr);
 
diff --git linux-libre-6.6.85-gnu/drivers/counter/microchip-tcb-capture.c linux-libre-6.6.86-gnu/drivers/counter/microchip-tcb-capture.c
index b3e615cbd2ca..461f57f66631 100644
--- linux-libre-6.6.85-gnu/drivers/counter/microchip-tcb-capture.c
+++ linux-libre-6.6.86-gnu/drivers/counter/microchip-tcb-capture.c
@@ -368,6 +368,25 @@ static int mchp_tc_probe(struct platform_device *pdev)
 			channel);
 	}
 
+	/* Disable Quadrature Decoder and position measure */
+	ret = regmap_update_bits(regmap, ATMEL_TC_BMR, ATMEL_TC_QDEN | ATMEL_TC_POSEN, 0);
+	if (ret)
+		return ret;
+
+	/* Setup the period capture mode */
+	ret = regmap_update_bits(regmap, ATMEL_TC_REG(priv->channel[0], CMR),
+				 ATMEL_TC_WAVE | ATMEL_TC_ABETRG | ATMEL_TC_CMR_MASK |
+				 ATMEL_TC_TCCLKS,
+				 ATMEL_TC_CMR_MASK);
+	if (ret)
+		return ret;
+
+	/* Enable clock and trigger counter */
+	ret = regmap_write(regmap, ATMEL_TC_REG(priv->channel[0], CCR),
+			   ATMEL_TC_CLKEN | ATMEL_TC_SWTRG);
+	if (ret)
+		return ret;
+
 	priv->tc_cfg = tcb_config;
 	priv->regmap = regmap;
 	counter->name = dev_name(&pdev->dev);
diff --git linux-libre-6.6.85-gnu/drivers/counter/stm32-lptimer-cnt.c linux-libre-6.6.86-gnu/drivers/counter/stm32-lptimer-cnt.c
index 8439755559b2..537fe9b669f3 100644
--- linux-libre-6.6.85-gnu/drivers/counter/stm32-lptimer-cnt.c
+++ linux-libre-6.6.86-gnu/drivers/counter/stm32-lptimer-cnt.c
@@ -58,37 +58,43 @@ static int stm32_lptim_set_enable_state(struct stm32_lptim_cnt *priv,
 		return 0;
 	}
 
+	ret = clk_enable(priv->clk);
+	if (ret)
+		goto disable_cnt;
+
 	/* LP timer must be enabled before writing CMP & ARR */
 	ret = regmap_write(priv->regmap, STM32_LPTIM_ARR, priv->ceiling);
 	if (ret)
-		return ret;
+		goto disable_clk;
 
 	ret = regmap_write(priv->regmap, STM32_LPTIM_CMP, 0);
 	if (ret)
-		return ret;
+		goto disable_clk;
 
 	/* ensure CMP & ARR registers are properly written */
 	ret = regmap_read_poll_timeout(priv->regmap, STM32_LPTIM_ISR, val,
 				       (val & STM32_LPTIM_CMPOK_ARROK) == STM32_LPTIM_CMPOK_ARROK,
 				       100, 1000);
 	if (ret)
-		return ret;
+		goto disable_clk;
 
 	ret = regmap_write(priv->regmap, STM32_LPTIM_ICR,
 			   STM32_LPTIM_CMPOKCF_ARROKCF);
 	if (ret)
-		return ret;
+		goto disable_clk;
 
-	ret = clk_enable(priv->clk);
-	if (ret) {
-		regmap_write(priv->regmap, STM32_LPTIM_CR, 0);
-		return ret;
-	}
 	priv->enabled = true;
 
 	/* Start LP timer in continuous mode */
 	return regmap_update_bits(priv->regmap, STM32_LPTIM_CR,
 				  STM32_LPTIM_CNTSTRT, STM32_LPTIM_CNTSTRT);
+
+disable_clk:
+	clk_disable(priv->clk);
+disable_cnt:
+	regmap_write(priv->regmap, STM32_LPTIM_CR, 0);
+
+	return ret;
 }
 
 static int stm32_lptim_setup(struct stm32_lptim_cnt *priv, int enable)
diff --git linux-libre-6.6.85-gnu/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c linux-libre-6.6.86-gnu/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index afc4e3dc53ca..4ce81e590d44 100644
--- linux-libre-6.6.85-gnu/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ linux-libre-6.6.86-gnu/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -2825,8 +2825,7 @@ static int dm_resume(void *handle)
 	struct dm_atomic_state *dm_state = to_dm_atomic_state(dm->atomic_obj.state);
 	enum dc_connection_type new_connection_type = dc_connection_none;
 	struct dc_state *dc_state;
-	int i, r, j, ret;
-	bool need_hotplug = false;
+	int i, r, j;
 
 	if (amdgpu_in_reset(adev)) {
 		dc_state = dm->cached_dc_state;
@@ -3003,23 +3002,16 @@ static int dm_resume(void *handle)
 		    aconnector->mst_root)
 			continue;
 
-		ret = drm_dp_mst_topology_mgr_resume(&aconnector->mst_mgr, true);
-
-		if (ret < 0) {
-			dm_helpers_dp_mst_stop_top_mgr(aconnector->dc_link->ctx,
-					aconnector->dc_link);
-			need_hotplug = true;
-		}
+		drm_dp_mst_topology_queue_probe(&aconnector->mst_mgr);
 	}
 	drm_connector_list_iter_end(&iter);
 
-	if (need_hotplug)
-		drm_kms_helper_hotplug_event(ddev);
-
 	amdgpu_dm_irq_resume_late(adev);
 
 	amdgpu_dm_smu_write_watermarks_table(adev);
 
+	drm_kms_helper_hotplug_event(ddev);
+
 	return 0;
 }
 
diff --git linux-libre-6.6.85-gnu/drivers/gpu/drm/amd/display/dc/dcn315/dcn315_resource.c linux-libre-6.6.86-gnu/drivers/gpu/drm/amd/display/dc/dcn315/dcn315_resource.c
index 3f3b555b4523..597fa0364a3a 100644
--- linux-libre-6.6.85-gnu/drivers/gpu/drm/amd/display/dc/dcn315/dcn315_resource.c
+++ linux-libre-6.6.86-gnu/drivers/gpu/drm/amd/display/dc/dcn315/dcn315_resource.c
@@ -1753,7 +1753,7 @@ static int dcn315_populate_dml_pipes_from_context(
 				bool split_required = pipe->stream->timing.pix_clk_100hz >= dcn_get_max_non_odm_pix_rate_100hz(&dc->dml.soc)
 						|| (pipe->plane_state && pipe->plane_state->src_rect.width > 5120);
 
-				if (remaining_det_segs > MIN_RESERVED_DET_SEGS)
+				if (remaining_det_segs > MIN_RESERVED_DET_SEGS && crb_pipes != 0)
 					pipes[pipe_cnt].pipe.src.det_size_override += (remaining_det_segs - MIN_RESERVED_DET_SEGS) / crb_pipes +
 							(crb_idx < (remaining_det_segs - MIN_RESERVED_DET_SEGS) % crb_pipes ? 1 : 0);
 				if (pipes[pipe_cnt].pipe.src.det_size_override > 2 * DCN3_15_MAX_DET_SEGS) {
diff --git linux-libre-6.6.85-gnu/drivers/gpu/drm/display/drm_dp_mst_topology.c linux-libre-6.6.86-gnu/drivers/gpu/drm/display/drm_dp_mst_topology.c
index 08f8a22431fe..71a30387ca12 100644
--- linux-libre-6.6.85-gnu/drivers/gpu/drm/display/drm_dp_mst_topology.c
+++ linux-libre-6.6.86-gnu/drivers/gpu/drm/display/drm_dp_mst_topology.c
@@ -2692,6 +2692,11 @@ static void drm_dp_mst_link_probe_work(struct work_struct *work)
 		drm_kms_helper_hotplug_event(dev);
 }
 
+static void drm_dp_mst_queue_probe_work(struct drm_dp_mst_topology_mgr *mgr)
+{
+	queue_work(system_long_wq, &mgr->work);
+}
+
 static bool drm_dp_validate_guid(struct drm_dp_mst_topology_mgr *mgr,
 				 u8 *guid)
 {
@@ -3643,7 +3648,7 @@ int drm_dp_mst_topology_mgr_set_mst(struct drm_dp_mst_topology_mgr *mgr, bool ms
 		/* Write reset payload */
 		drm_dp_dpcd_write_payload(mgr, 0, 0, 0x3f);
 
-		queue_work(system_long_wq, &mgr->work);
+		drm_dp_mst_queue_probe_work(mgr);
 
 		ret = 0;
 	} else {
@@ -3680,6 +3685,33 @@ drm_dp_mst_topology_mgr_invalidate_mstb(struct drm_dp_mst_branch *mstb)
 			drm_dp_mst_topology_mgr_invalidate_mstb(port->mstb);
 }
 
+/**
+ * drm_dp_mst_topology_queue_probe - Queue a topology probe
+ * @mgr: manager to probe
+ *
+ * Queue a work to probe the MST topology. Driver's should call this only to
+ * sync the topology's HW->SW state after the MST link's parameters have
+ * changed in a way the state could've become out-of-sync. This is the case
+ * for instance when the link rate between the source and first downstream
+ * branch device has switched between UHBR and non-UHBR rates. Except of those
+ * cases - for instance when a sink gets plugged/unplugged to a port - the SW
+ * state will get updated automatically via MST UP message notifications.
+ */
+void drm_dp_mst_topology_queue_probe(struct drm_dp_mst_topology_mgr *mgr)
+{
+	mutex_lock(&mgr->lock);
+
+	if (drm_WARN_ON(mgr->dev, !mgr->mst_state || !mgr->mst_primary))
+		goto out_unlock;
+
+	drm_dp_mst_topology_mgr_invalidate_mstb(mgr->mst_primary);
+	drm_dp_mst_queue_probe_work(mgr);
+
+out_unlock:
+	mutex_unlock(&mgr->lock);
+}
+EXPORT_SYMBOL(drm_dp_mst_topology_queue_probe);
+
 /**
  * drm_dp_mst_topology_mgr_suspend() - suspend the MST manager
  * @mgr: manager to suspend
@@ -3766,7 +3798,7 @@ int drm_dp_mst_topology_mgr_resume(struct drm_dp_mst_topology_mgr *mgr,
 	 * state of our in-memory topology back into sync with reality. So,
 	 * restart the probing process as if we're probing a new hub
 	 */
-	queue_work(system_long_wq, &mgr->work);
+	drm_dp_mst_queue_probe_work(mgr);
 	mutex_unlock(&mgr->lock);
 
 	if (sync) {
diff --git linux-libre-6.6.85-gnu/drivers/hid/hid-plantronics.c linux-libre-6.6.86-gnu/drivers/hid/hid-plantronics.c
index 25cfd964dc25..acb9eb18f7cc 100644
--- linux-libre-6.6.85-gnu/drivers/hid/hid-plantronics.c
+++ linux-libre-6.6.86-gnu/drivers/hid/hid-plantronics.c
@@ -6,9 +6,6 @@
  *  Copyright (c) 2015-2018 Terry Junge <terry.junge@plantronics.com>
  */
 
-/*
- */
-
 #include "hid-ids.h"
 
 #include <linux/hid.h>
@@ -23,30 +20,28 @@
 
 #define PLT_VOL_UP		0x00b1
 #define PLT_VOL_DOWN		0x00b2
+#define PLT_MIC_MUTE		0x00b5
 
 #define PLT1_VOL_UP		(PLT_HID_1_0_PAGE | PLT_VOL_UP)
 #define PLT1_VOL_DOWN		(PLT_HID_1_0_PAGE | PLT_VOL_DOWN)
+#define PLT1_MIC_MUTE		(PLT_HID_1_0_PAGE | PLT_MIC_MUTE)
 #define PLT2_VOL_UP		(PLT_HID_2_0_PAGE | PLT_VOL_UP)
 #define PLT2_VOL_DOWN		(PLT_HID_2_0_PAGE | PLT_VOL_DOWN)
+#define PLT2_MIC_MUTE		(PLT_HID_2_0_PAGE | PLT_MIC_MUTE)
+#define HID_TELEPHONY_MUTE	(HID_UP_TELEPHONY | 0x2f)
+#define HID_CONSUMER_MUTE	(HID_UP_CONSUMER | 0xe2)
 
 #define PLT_DA60		0xda60
 #define PLT_BT300_MIN		0x0413
 #define PLT_BT300_MAX		0x0418
 
-
-#define PLT_ALLOW_CONSUMER (field->application == HID_CP_CONSUMERCONTROL && \
-			    (usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER)
-
-#define PLT_QUIRK_DOUBLE_VOLUME_KEYS BIT(0)
-#define PLT_QUIRK_FOLLOWED_OPPOSITE_VOLUME_KEYS BIT(1)
-
 #define PLT_DOUBLE_KEY_TIMEOUT 5 /* ms */
-#define PLT_FOLLOWED_OPPOSITE_KEY_TIMEOUT 220 /* ms */
 
 struct plt_drv_data {
 	unsigned long device_type;
-	unsigned long last_volume_key_ts;
-	u32 quirks;
+	unsigned long last_key_ts;
+	unsigned long double_key_to;
+	__u16 last_key;
 };
 
 static int plantronics_input_mapping(struct hid_device *hdev,
@@ -58,34 +53,43 @@ static int plantronics_input_mapping(struct hid_device *hdev,
 	unsigned short mapped_key;
 	struct plt_drv_data *drv_data = hid_get_drvdata(hdev);
 	unsigned long plt_type = drv_data->device_type;
+	int allow_mute = usage->hid == HID_TELEPHONY_MUTE;
+	int allow_consumer = field->application == HID_CP_CONSUMERCONTROL &&
+			(usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER &&
+			usage->hid != HID_CONSUMER_MUTE;
 
 	/* special case for PTT products */
 	if (field->application == HID_GD_JOYSTICK)
 		goto defaulted;
 
-	/* handle volume up/down mapping */
 	/* non-standard types or multi-HID interfaces - plt_type is PID */
 	if (!(plt_type & HID_USAGE_PAGE)) {
 		switch (plt_type) {
 		case PLT_DA60:
-			if (PLT_ALLOW_CONSUMER)
+			if (allow_consumer)
 				goto defaulted;
-			goto ignored;
+			if (usage->hid == HID_CONSUMER_MUTE) {
+				mapped_key = KEY_MICMUTE;
+				goto mapped;
+			}
+			break;
 		default:
-			if (PLT_ALLOW_CONSUMER)
+			if (allow_consumer || allow_mute)
 				goto defaulted;
 		}
+		goto ignored;
 	}
-	/* handle standard types - plt_type is 0xffa0uuuu or 0xffa2uuuu */
-	/* 'basic telephony compliant' - allow default consumer page map */
-	else if ((plt_type & HID_USAGE) >= PLT_BASIC_TELEPHONY &&
-		 (plt_type & HID_USAGE) != PLT_BASIC_EXCEPTION) {
-		if (PLT_ALLOW_CONSUMER)
-			goto defaulted;
-	}
-	/* not 'basic telephony' - apply legacy mapping */
-	/* only map if the field is in the device's primary vendor page */
-	else if (!((field->application ^ plt_type) & HID_USAGE_PAGE)) {
+
+	/* handle standard consumer control mapping */
+	/* and standard telephony mic mute mapping */
+	if (allow_consumer || allow_mute)
+		goto defaulted;
+
+	/* handle vendor unique types - plt_type is 0xffa0uuuu or 0xffa2uuuu */
+	/* if not 'basic telephony compliant' - map vendor unique controls */
+	if (!((plt_type & HID_USAGE) >= PLT_BASIC_TELEPHONY &&
+	      (plt_type & HID_USAGE) != PLT_BASIC_EXCEPTION) &&
+	      !((field->application ^ plt_type) & HID_USAGE_PAGE))
 		switch (usage->hid) {
 		case PLT1_VOL_UP:
 		case PLT2_VOL_UP:
@@ -95,8 +99,11 @@ static int plantronics_input_mapping(struct hid_device *hdev,
 		case PLT2_VOL_DOWN:
 			mapped_key = KEY_VOLUMEDOWN;
 			goto mapped;
+		case PLT1_MIC_MUTE:
+		case PLT2_MIC_MUTE:
+			mapped_key = KEY_MICMUTE;
+			goto mapped;
 		}
-	}
 
 /*
  * Future mapping of call control or other usages,
@@ -105,6 +112,8 @@ static int plantronics_input_mapping(struct hid_device *hdev,
  */
 
 ignored:
+	hid_dbg(hdev, "usage: %08x (appl: %08x) - ignored\n",
+		usage->hid, field->application);
 	return -1;
 
 defaulted:
@@ -123,38 +132,26 @@ static int plantronics_event(struct hid_device *hdev, struct hid_field *field,
 			     struct hid_usage *usage, __s32 value)
 {
 	struct plt_drv_data *drv_data = hid_get_drvdata(hdev);
+	unsigned long prev_tsto, cur_ts;
+	__u16 prev_key, cur_key;
 
-	if (drv_data->quirks & PLT_QUIRK_DOUBLE_VOLUME_KEYS) {
-		unsigned long prev_ts, cur_ts;
+	/* Usages are filtered in plantronics_usages. */
 
-		/* Usages are filtered in plantronics_usages. */
+	/* HZ too low for ms resolution - double key detection disabled */
+	/* or it is a key release - handle key presses only. */
+	if (!drv_data->double_key_to || !value)
+		return 0;
 
-		if (!value) /* Handle key presses only. */
-			return 0;
+	prev_tsto = drv_data->last_key_ts + drv_data->double_key_to;
+	cur_ts = drv_data->last_key_ts = jiffies;
+	prev_key = drv_data->last_key;
+	cur_key = drv_data->last_key = usage->code;
 
-		prev_ts = drv_data->last_volume_key_ts;
-		cur_ts = jiffies;
-		if (jiffies_to_msecs(cur_ts - prev_ts) <= PLT_DOUBLE_KEY_TIMEOUT)
-			return 1; /* Ignore the repeated key. */
-
-		drv_data->last_volume_key_ts = cur_ts;
+	/* If the same key occurs in <= double_key_to -- ignore it */
+	if (prev_key == cur_key && time_before_eq(cur_ts, prev_tsto)) {
+		hid_dbg(hdev, "double key %d ignored\n", cur_key);
+		return 1; /* Ignore the repeated key. */
 	}
-	if (drv_data->quirks & PLT_QUIRK_FOLLOWED_OPPOSITE_VOLUME_KEYS) {
-		unsigned long prev_ts, cur_ts;
-
-		/* Usages are filtered in plantronics_usages. */
-
-		if (!value) /* Handle key presses only. */
-			return 0;
-
-		prev_ts = drv_data->last_volume_key_ts;
-		cur_ts = jiffies;
-		if (jiffies_to_msecs(cur_ts - prev_ts) <= PLT_FOLLOWED_OPPOSITE_KEY_TIMEOUT)
-			return 1; /* Ignore the followed opposite volume key. */
-
-		drv_data->last_volume_key_ts = cur_ts;
-	}
-
 	return 0;
 }
 
@@ -196,12 +193,16 @@ static int plantronics_probe(struct hid_device *hdev,
 	ret = hid_parse(hdev);
 	if (ret) {
 		hid_err(hdev, "parse failed\n");
-		goto err;
+		return ret;
 	}
 
 	drv_data->device_type = plantronics_device_type(hdev);
-	drv_data->quirks = id->driver_data;
-	drv_data->last_volume_key_ts = jiffies - msecs_to_jiffies(PLT_DOUBLE_KEY_TIMEOUT);
+	drv_data->double_key_to = msecs_to_jiffies(PLT_DOUBLE_KEY_TIMEOUT);
+	drv_data->last_key_ts = jiffies - drv_data->double_key_to;
+
+	/* if HZ does not allow ms resolution - disable double key detection */
+	if (drv_data->double_key_to < PLT_DOUBLE_KEY_TIMEOUT)
+		drv_data->double_key_to = 0;
 
 	hid_set_drvdata(hdev, drv_data);
 
@@ -210,29 +211,10 @@ static int plantronics_probe(struct hid_device *hdev,
 	if (ret)
 		hid_err(hdev, "hw start failed\n");
 
-err:
 	return ret;
 }
 
 static const struct hid_device_id plantronics_devices[] = {
-	{ HID_USB_DEVICE(USB_VENDOR_ID_PLANTRONICS,
-					 USB_DEVICE_ID_PLANTRONICS_BLACKWIRE_3210_SERIES),
-		.driver_data = PLT_QUIRK_DOUBLE_VOLUME_KEYS },
-	{ HID_USB_DEVICE(USB_VENDOR_ID_PLANTRONICS,
-					 USB_DEVICE_ID_PLANTRONICS_BLACKWIRE_3220_SERIES),
-		.driver_data = PLT_QUIRK_DOUBLE_VOLUME_KEYS },
-	{ HID_USB_DEVICE(USB_VENDOR_ID_PLANTRONICS,
-					 USB_DEVICE_ID_PLANTRONICS_BLACKWIRE_3215_SERIES),
-		.driver_data = PLT_QUIRK_DOUBLE_VOLUME_KEYS },
-	{ HID_USB_DEVICE(USB_VENDOR_ID_PLANTRONICS,
-					 USB_DEVICE_ID_PLANTRONICS_BLACKWIRE_3225_SERIES),
-		.driver_data = PLT_QUIRK_DOUBLE_VOLUME_KEYS },
-	{ HID_USB_DEVICE(USB_VENDOR_ID_PLANTRONICS,
-					 USB_DEVICE_ID_PLANTRONICS_BLACKWIRE_3325_SERIES),
-		.driver_data = PLT_QUIRK_FOLLOWED_OPPOSITE_VOLUME_KEYS },
-	{ HID_USB_DEVICE(USB_VENDOR_ID_PLANTRONICS,
-					 USB_DEVICE_ID_PLANTRONICS_ENCOREPRO_500_SERIES),
-		.driver_data = PLT_QUIRK_FOLLOWED_OPPOSITE_VOLUME_KEYS },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_PLANTRONICS, HID_ANY_ID) },
 	{ }
 };
@@ -241,6 +223,14 @@ MODULE_DEVICE_TABLE(hid, plantronics_devices);
 static const struct hid_usage_id plantronics_usages[] = {
 	{ HID_CP_VOLUMEUP, EV_KEY, HID_ANY_ID },
 	{ HID_CP_VOLUMEDOWN, EV_KEY, HID_ANY_ID },
+	{ HID_TELEPHONY_MUTE, EV_KEY, HID_ANY_ID },
+	{ HID_CONSUMER_MUTE, EV_KEY, HID_ANY_ID },
+	{ PLT2_VOL_UP, EV_KEY, HID_ANY_ID },
+	{ PLT2_VOL_DOWN, EV_KEY, HID_ANY_ID },
+	{ PLT2_MIC_MUTE, EV_KEY, HID_ANY_ID },
+	{ PLT1_VOL_UP, EV_KEY, HID_ANY_ID },
+	{ PLT1_VOL_DOWN, EV_KEY, HID_ANY_ID },
+	{ PLT1_MIC_MUTE, EV_KEY, HID_ANY_ID },
 	{ HID_TERMINATOR, HID_TERMINATOR, HID_TERMINATOR }
 };
 
diff --git linux-libre-6.6.85-gnu/drivers/memstick/host/rtsx_usb_ms.c linux-libre-6.6.86-gnu/drivers/memstick/host/rtsx_usb_ms.c
index 29271ad4728a..dec279845a75 100644
--- linux-libre-6.6.85-gnu/drivers/memstick/host/rtsx_usb_ms.c
+++ linux-libre-6.6.86-gnu/drivers/memstick/host/rtsx_usb_ms.c
@@ -813,6 +813,7 @@ static int rtsx_usb_ms_drv_remove(struct platform_device *pdev)
 
 	host->eject = true;
 	cancel_work_sync(&host->handle_req);
+	cancel_delayed_work_sync(&host->poll_card);
 
 	mutex_lock(&host->host_mutex);
 	if (host->req) {
diff --git linux-libre-6.6.85-gnu/drivers/net/usb/qmi_wwan.c linux-libre-6.6.86-gnu/drivers/net/usb/qmi_wwan.c
index 8e30df676ede..dc84d9029c2c 100644
--- linux-libre-6.6.85-gnu/drivers/net/usb/qmi_wwan.c
+++ linux-libre-6.6.86-gnu/drivers/net/usb/qmi_wwan.c
@@ -1373,9 +1373,11 @@ static const struct usb_device_id products[] = {
 	{QMI_QUIRK_SET_DTR(0x1bc7, 0x10a0, 0)}, /* Telit FN920C04 */
 	{QMI_QUIRK_SET_DTR(0x1bc7, 0x10a4, 0)}, /* Telit FN920C04 */
 	{QMI_QUIRK_SET_DTR(0x1bc7, 0x10a9, 0)}, /* Telit FN920C04 */
+	{QMI_QUIRK_SET_DTR(0x1bc7, 0x10b0, 0)}, /* Telit FE990B */
 	{QMI_QUIRK_SET_DTR(0x1bc7, 0x10c0, 0)}, /* Telit FE910C04 */
 	{QMI_QUIRK_SET_DTR(0x1bc7, 0x10c4, 0)}, /* Telit FE910C04 */
 	{QMI_QUIRK_SET_DTR(0x1bc7, 0x10c8, 0)}, /* Telit FE910C04 */
+	{QMI_QUIRK_SET_DTR(0x1bc7, 0x10d0, 0)}, /* Telit FN990B */
 	{QMI_FIXED_INTF(0x1bc7, 0x1100, 3)},	/* Telit ME910 */
 	{QMI_FIXED_INTF(0x1bc7, 0x1101, 3)},	/* Telit ME910 dual modem */
 	{QMI_FIXED_INTF(0x1bc7, 0x1200, 5)},	/* Telit LE920 */
diff --git linux-libre-6.6.85-gnu/drivers/net/usb/usbnet.c linux-libre-6.6.86-gnu/drivers/net/usb/usbnet.c
index 9f66c47dc58b..08cbc8e4b361 100644
--- linux-libre-6.6.85-gnu/drivers/net/usb/usbnet.c
+++ linux-libre-6.6.86-gnu/drivers/net/usb/usbnet.c
@@ -178,6 +178,17 @@ int usbnet_get_ethernet_addr(struct usbnet *dev, int iMACAddress)
 }
 EXPORT_SYMBOL_GPL(usbnet_get_ethernet_addr);
 
+static bool usbnet_needs_usb_name_format(struct usbnet *dev, struct net_device *net)
+{
+	/* Point to point devices which don't have a real MAC address
+	 * (or report a fake local one) have historically used the usb%d
+	 * naming. Preserve this..
+	 */
+	return (dev->driver_info->flags & FLAG_POINTTOPOINT) != 0 &&
+		(is_zero_ether_addr(net->dev_addr) ||
+		 is_local_ether_addr(net->dev_addr));
+}
+
 static void intr_complete (struct urb *urb)
 {
 	struct usbnet	*dev = urb->context;
@@ -1766,13 +1777,11 @@ usbnet_probe (struct usb_interface *udev, const struct usb_device_id *prod)
 		if (status < 0)
 			goto out1;
 
-		// heuristic:  "usb%d" for links we know are two-host,
-		// else "eth%d" when there's reasonable doubt.  userspace
-		// can rename the link if it knows better.
+		/* heuristic: rename to "eth%d" if we are not sure this link
+		 * is two-host (these links keep "usb%d")
+		 */
 		if ((dev->driver_info->flags & FLAG_ETHER) != 0 &&
-		    ((dev->driver_info->flags & FLAG_POINTTOPOINT) == 0 ||
-		     /* somebody touched it*/
-		     !is_zero_ether_addr(net->dev_addr)))
+		    !usbnet_needs_usb_name_format(dev, net))
 			strscpy(net->name, "eth%d", sizeof(net->name));
 		/* WLAN devices should always be named "wlan%d" */
 		if ((dev->driver_info->flags & FLAG_WLAN) != 0)
diff --git linux-libre-6.6.85-gnu/drivers/reset/starfive/reset-starfive-jh71x0.c linux-libre-6.6.86-gnu/drivers/reset/starfive/reset-starfive-jh71x0.c
index 55bbbd2de52c..29ce3486752f 100644
--- linux-libre-6.6.85-gnu/drivers/reset/starfive/reset-starfive-jh71x0.c
+++ linux-libre-6.6.86-gnu/drivers/reset/starfive/reset-starfive-jh71x0.c
@@ -94,6 +94,9 @@ static int jh71x0_reset_status(struct reset_controller_dev *rcdev,
 	void __iomem *reg_status = data->status + offset * sizeof(u32);
 	u32 value = readl(reg_status);
 
+	if (!data->asserted)
+		return !(value & mask);
+
 	return !((value ^ data->asserted[offset]) & mask);
 }
 
diff --git linux-libre-6.6.85-gnu/drivers/tty/serial/8250/8250_dma.c linux-libre-6.6.86-gnu/drivers/tty/serial/8250/8250_dma.c
index 7f23037813bc..62492cf10bc9 100644
--- linux-libre-6.6.85-gnu/drivers/tty/serial/8250/8250_dma.c
+++ linux-libre-6.6.86-gnu/drivers/tty/serial/8250/8250_dma.c
@@ -152,7 +152,7 @@ void serial8250_tx_dma_flush(struct uart_8250_port *p)
 	 */
 	dma->tx_size = 0;
 
-	dmaengine_terminate_async(dma->rxchan);
+	dmaengine_terminate_async(dma->txchan);
 }
 
 int serial8250_rx_dma(struct uart_8250_port *p)
diff --git linux-libre-6.6.85-gnu/drivers/tty/serial/8250/8250_pci.c linux-libre-6.6.86-gnu/drivers/tty/serial/8250/8250_pci.c
index bbd7914ddc9a..0b38fada4144 100644
--- linux-libre-6.6.85-gnu/drivers/tty/serial/8250/8250_pci.c
+++ linux-libre-6.6.86-gnu/drivers/tty/serial/8250/8250_pci.c
@@ -2576,6 +2576,22 @@ static struct pci_serial_quirk pci_serial_quirks[] = {
 		.init		= pci_oxsemi_tornado_init,
 		.setup		= pci_oxsemi_tornado_setup,
 	},
+	{
+		.vendor		= PCI_VENDOR_ID_INTASHIELD,
+		.device		= 0x4026,
+		.subvendor	= PCI_ANY_ID,
+		.subdevice	= PCI_ANY_ID,
+		.init		= pci_oxsemi_tornado_init,
+		.setup		= pci_oxsemi_tornado_setup,
+	},
+	{
+		.vendor		= PCI_VENDOR_ID_INTASHIELD,
+		.device		= 0x4021,
+		.subvendor	= PCI_ANY_ID,
+		.subdevice	= PCI_ANY_ID,
+		.init		= pci_oxsemi_tornado_init,
+		.setup		= pci_oxsemi_tornado_setup,
+	},
 	{
 		.vendor         = PCI_VENDOR_ID_INTEL,
 		.device         = 0x8811,
@@ -5107,6 +5123,14 @@ static const struct pci_device_id serial_pci_tbl[] = {
 		PCI_ANY_ID, PCI_ANY_ID,
 		0, 0,
 		pbn_b2_2_115200 },
+	{       PCI_VENDOR_ID_INTASHIELD, 0x0BA2,
+		PCI_ANY_ID, PCI_ANY_ID,
+		0, 0,
+		pbn_b2_2_115200 },
+	{       PCI_VENDOR_ID_INTASHIELD, 0x0BA3,
+		PCI_ANY_ID, PCI_ANY_ID,
+		0, 0,
+		pbn_b2_2_115200 },
 	/*
 	 * Brainboxes UC-235/246
 	 */
@@ -5227,6 +5251,14 @@ static const struct pci_device_id serial_pci_tbl[] = {
 		PCI_ANY_ID, PCI_ANY_ID,
 		0, 0,
 		pbn_b2_4_115200 },
+	{	PCI_VENDOR_ID_INTASHIELD, 0x0C42,
+		PCI_ANY_ID, PCI_ANY_ID,
+		0, 0,
+		pbn_b2_4_115200 },
+	{	PCI_VENDOR_ID_INTASHIELD, 0x0C43,
+		PCI_ANY_ID, PCI_ANY_ID,
+		0, 0,
+		pbn_b2_4_115200 },
 	/*
 	 * Brainboxes UC-420
 	 */
@@ -5453,6 +5485,20 @@ static const struct pci_device_id serial_pci_tbl[] = {
 		PCI_ANY_ID, PCI_ANY_ID,
 		0, 0,
 		pbn_oxsemi_1_15625000 },
+	/*
+	 * Brainboxes XC-235
+	 */
+	{	PCI_VENDOR_ID_INTASHIELD, 0x4026,
+		PCI_ANY_ID, PCI_ANY_ID,
+		0, 0,
+		pbn_oxsemi_1_15625000 },
+	/*
+	 * Brainboxes XC-475
+	 */
+	{	PCI_VENDOR_ID_INTASHIELD, 0x4021,
+		PCI_ANY_ID, PCI_ANY_ID,
+		0, 0,
+		pbn_oxsemi_1_15625000 },
 
 	/*
 	 * Perle PCI-RAS cards
diff --git linux-libre-6.6.85-gnu/drivers/tty/serial/fsl_lpuart.c linux-libre-6.6.86-gnu/drivers/tty/serial/fsl_lpuart.c
index 8bd0f8e45b14..70fa1e6aebe1 100644
--- linux-libre-6.6.85-gnu/drivers/tty/serial/fsl_lpuart.c
+++ linux-libre-6.6.86-gnu/drivers/tty/serial/fsl_lpuart.c
@@ -1488,6 +1488,19 @@ static int lpuart32_config_rs485(struct uart_port *port, struct ktermios *termio
 
 	unsigned long modem = lpuart32_read(&sport->port, UARTMODIR)
 				& ~(UARTMODIR_TXRTSPOL | UARTMODIR_TXRTSE);
+	u32 ctrl;
+
+	/* TXRTSE and TXRTSPOL only can be changed when transmitter is disabled. */
+	ctrl = lpuart32_read(&sport->port, UARTCTRL);
+	if (ctrl & UARTCTRL_TE) {
+		/* wait for the transmit engine to complete */
+		lpuart32_wait_bit_set(&sport->port, UARTSTAT, UARTSTAT_TC);
+		lpuart32_write(&sport->port, ctrl & ~UARTCTRL_TE, UARTCTRL);
+
+		while (lpuart32_read(&sport->port, UARTCTRL) & UARTCTRL_TE)
+			cpu_relax();
+	}
+
 	lpuart32_write(&sport->port, modem, UARTMODIR);
 
 	if (rs485->flags & SER_RS485_ENABLED) {
@@ -1507,6 +1520,10 @@ static int lpuart32_config_rs485(struct uart_port *port, struct ktermios *termio
 	}
 
 	lpuart32_write(&sport->port, modem, UARTMODIR);
+
+	if (ctrl & UARTCTRL_TE)
+		lpuart32_write(&sport->port, ctrl, UARTCTRL);
+
 	return 0;
 }
 
diff --git linux-libre-6.6.85-gnu/drivers/ufs/host/ufs-qcom.c linux-libre-6.6.86-gnu/drivers/ufs/host/ufs-qcom.c
index c5a6b133d364..51ed40529f9a 100644
--- linux-libre-6.6.85-gnu/drivers/ufs/host/ufs-qcom.c
+++ linux-libre-6.6.86-gnu/drivers/ufs/host/ufs-qcom.c
@@ -1918,10 +1918,12 @@ static int ufs_qcom_probe(struct platform_device *pdev)
 static int ufs_qcom_remove(struct platform_device *pdev)
 {
 	struct ufs_hba *hba =  platform_get_drvdata(pdev);
+	struct ufs_qcom_host *host = ufshcd_get_variant(hba);
 
 	pm_runtime_get_sync(&(pdev)->dev);
 	ufshcd_remove(hba);
-	platform_msi_domain_free_irqs(hba->dev);
+	if (host->esi_enabled)
+		platform_msi_domain_free_irqs(hba->dev);
 	return 0;
 }
 
diff --git linux-libre-6.6.85-gnu/drivers/usb/gadget/function/uvc_v4l2.c linux-libre-6.6.86-gnu/drivers/usb/gadget/function/uvc_v4l2.c
index 3f0a9795c0d4..0195625bef53 100644
--- linux-libre-6.6.85-gnu/drivers/usb/gadget/function/uvc_v4l2.c
+++ linux-libre-6.6.86-gnu/drivers/usb/gadget/function/uvc_v4l2.c
@@ -121,6 +121,9 @@ static struct uvcg_format *find_format_by_pix(struct uvc_device *uvc,
 	list_for_each_entry(format, &uvc->header->formats, entry) {
 		const struct uvc_format_desc *fmtdesc = to_uvc_format(format->fmt);
 
+		if (IS_ERR(fmtdesc))
+			continue;
+
 		if (fmtdesc->fcc == pixelformat) {
 			uformat = format->fmt;
 			break;
@@ -240,6 +243,7 @@ uvc_v4l2_try_format(struct file *file, void *fh, struct v4l2_format *fmt)
 	struct uvc_video *video = &uvc->video;
 	struct uvcg_format *uformat;
 	struct uvcg_frame *uframe;
+	const struct uvc_format_desc *fmtdesc;
 	u8 *fcc;
 
 	if (fmt->type != video->queue.queue.type)
@@ -265,7 +269,10 @@ uvc_v4l2_try_format(struct file *file, void *fh, struct v4l2_format *fmt)
 	fmt->fmt.pix.field = V4L2_FIELD_NONE;
 	fmt->fmt.pix.bytesperline = uvc_v4l2_get_bytesperline(uformat, uframe);
 	fmt->fmt.pix.sizeimage = uvc_get_frame_size(uformat, uframe);
-	fmt->fmt.pix.pixelformat = to_uvc_format(uformat)->fcc;
+	fmtdesc = to_uvc_format(uformat);
+	if (IS_ERR(fmtdesc))
+		return PTR_ERR(fmtdesc);
+	fmt->fmt.pix.pixelformat = fmtdesc->fcc;
 	fmt->fmt.pix.colorspace = V4L2_COLORSPACE_SRGB;
 	fmt->fmt.pix.priv = 0;
 
@@ -375,6 +382,9 @@ uvc_v4l2_enum_format(struct file *file, void *fh, struct v4l2_fmtdesc *f)
 		return -EINVAL;
 
 	fmtdesc = to_uvc_format(uformat);
+	if (IS_ERR(fmtdesc))
+		return PTR_ERR(fmtdesc);
+
 	f->pixelformat = fmtdesc->fcc;
 
 	return 0;
diff --git linux-libre-6.6.85-gnu/include/drm/display/drm_dp_mst_helper.h linux-libre-6.6.86-gnu/include/drm/display/drm_dp_mst_helper.h
index ab1d73f93408..46705dacdd08 100644
--- linux-libre-6.6.85-gnu/include/drm/display/drm_dp_mst_helper.h
+++ linux-libre-6.6.86-gnu/include/drm/display/drm_dp_mst_helper.h
@@ -859,6 +859,8 @@ int drm_dp_check_act_status(struct drm_dp_mst_topology_mgr *mgr);
 void drm_dp_mst_dump_topology(struct seq_file *m,
 			      struct drm_dp_mst_topology_mgr *mgr);
 
+void drm_dp_mst_topology_queue_probe(struct drm_dp_mst_topology_mgr *mgr);
+
 void drm_dp_mst_topology_mgr_suspend(struct drm_dp_mst_topology_mgr *mgr);
 int __must_check
 drm_dp_mst_topology_mgr_resume(struct drm_dp_mst_topology_mgr *mgr,
diff --git linux-libre-6.6.85-gnu/mm/page_alloc.c linux-libre-6.6.86-gnu/mm/page_alloc.c
index 191f0f95d3ed..bc62bb2a3b13 100644
--- linux-libre-6.6.85-gnu/mm/page_alloc.c
+++ linux-libre-6.6.86-gnu/mm/page_alloc.c
@@ -6653,7 +6653,7 @@ static bool try_to_accept_memory_one(struct zone *zone)
 
 static bool cond_accept_memory(struct zone *zone, unsigned int order)
 {
-	long to_accept;
+	long to_accept, wmark;
 	bool ret = false;
 
 	if (!has_unaccepted_memory())
@@ -6662,8 +6662,18 @@ static bool cond_accept_memory(struct zone *zone, unsigned int order)
 	if (list_empty(&zone->unaccepted_pages))
 		return false;
 
+	wmark = high_wmark_pages(zone);
+
+	/*
+	 * Watermarks have not been initialized yet.
+	 *
+	 * Accepting one MAX_ORDER page to ensure progress.
+	 */
+	if (!wmark)
+		return try_to_accept_memory_one(zone);
+
 	/* How much to accept to get to high watermark? */
-	to_accept = high_wmark_pages(zone) -
+	to_accept = wmark -
 		    (zone_page_state(zone, NR_FREE_PAGES) -
 		    __zone_watermark_unusable_free(zone, order, 0) -
 		    zone_page_state(zone, NR_UNACCEPTED));
diff --git linux-libre-6.6.85-gnu/net/atm/mpc.c linux-libre-6.6.86-gnu/net/atm/mpc.c
index 033871e718a3..583c27131b7d 100644
--- linux-libre-6.6.85-gnu/net/atm/mpc.c
+++ linux-libre-6.6.86-gnu/net/atm/mpc.c
@@ -1314,6 +1314,8 @@ static void MPOA_cache_impos_rcvd(struct k_message *msg,
 	holding_time = msg->content.eg_info.holding_time;
 	dprintk("(%s) entry = %p, holding_time = %u\n",
 		mpc->dev->name, entry, holding_time);
+	if (entry == NULL && !holding_time)
+		return;
 	if (entry == NULL && holding_time) {
 		entry = mpc->eg_ops->add_entry(msg, mpc);
 		mpc->eg_ops->put(entry);
diff --git linux-libre-6.6.85-gnu/net/ipv6/netfilter/nf_socket_ipv6.c linux-libre-6.6.86-gnu/net/ipv6/netfilter/nf_socket_ipv6.c
index a7690ec62325..9ea5ef56cb27 100644
--- linux-libre-6.6.85-gnu/net/ipv6/netfilter/nf_socket_ipv6.c
+++ linux-libre-6.6.86-gnu/net/ipv6/netfilter/nf_socket_ipv6.c
@@ -103,6 +103,10 @@ struct sock *nf_sk_lookup_slow_v6(struct net *net, const struct sk_buff *skb,
 	struct sk_buff *data_skb = NULL;
 	int doff = 0;
 	int thoff = 0, tproto;
+#if IS_ENABLED(CONFIG_NF_CONNTRACK)
+	enum ip_conntrack_info ctinfo;
+	struct nf_conn const *ct;
+#endif
 
 	tproto = ipv6_find_hdr(skb, &thoff, -1, NULL, NULL);
 	if (tproto < 0) {
@@ -136,6 +140,25 @@ struct sock *nf_sk_lookup_slow_v6(struct net *net, const struct sk_buff *skb,
 		return NULL;
 	}
 
+#if IS_ENABLED(CONFIG_NF_CONNTRACK)
+	/* Do the lookup with the original socket address in
+	 * case this is a reply packet of an established
+	 * SNAT-ted connection.
+	 */
+	ct = nf_ct_get(skb, &ctinfo);
+	if (ct &&
+	    ((tproto != IPPROTO_ICMPV6 &&
+	      ctinfo == IP_CT_ESTABLISHED_REPLY) ||
+	     (tproto == IPPROTO_ICMPV6 &&
+	      ctinfo == IP_CT_RELATED_REPLY)) &&
+	    (ct->status & IPS_SRC_NAT_DONE)) {
+		daddr = &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u3.in6;
+		dport = (tproto == IPPROTO_TCP) ?
+			ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u.tcp.port :
+			ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u.udp.port;
+	}
+#endif
+
 	return nf_socket_get_sock_v6(net, data_skb, doff, tproto, saddr, daddr,
 				     sport, dport, indev);
 }
diff --git linux-libre-6.6.85-gnu/sound/pci/hda/patch_realtek.c linux-libre-6.6.86-gnu/sound/pci/hda/patch_realtek.c
index 1fd6e84b0e37..b3cd6090f46a 100644
--- linux-libre-6.6.85-gnu/sound/pci/hda/patch_realtek.c
+++ linux-libre-6.6.86-gnu/sound/pci/hda/patch_realtek.c
@@ -10023,6 +10023,7 @@ static const struct hda_quirk alc269_fixup_tbl[] = {
 	SND_PCI_QUIRK(0x103c, 0x8811, "HP Spectre x360 15-eb1xxx", ALC285_FIXUP_HP_SPECTRE_X360_EB1),
 	SND_PCI_QUIRK(0x103c, 0x8812, "HP Spectre x360 15-eb1xxx", ALC285_FIXUP_HP_SPECTRE_X360_EB1),
 	SND_PCI_QUIRK(0x103c, 0x881d, "HP 250 G8 Notebook PC", ALC236_FIXUP_HP_MUTE_LED_COEFBIT2),
+	SND_PCI_QUIRK(0x103c, 0x881e, "HP Laptop 15s-du3xxx", ALC236_FIXUP_HP_MUTE_LED_COEFBIT2),
 	SND_PCI_QUIRK(0x103c, 0x8846, "HP EliteBook 850 G8 Notebook PC", ALC285_FIXUP_HP_GPIO_LED),
 	SND_PCI_QUIRK(0x103c, 0x8847, "HP EliteBook x360 830 G8 Notebook PC", ALC285_FIXUP_HP_GPIO_LED),
 	SND_PCI_QUIRK(0x103c, 0x884b, "HP EliteBook 840 Aero G8 Notebook PC", ALC285_FIXUP_HP_GPIO_LED),
diff --git linux-libre-6.6.85-gnu/sound/usb/mixer_quirks.c linux-libre-6.6.86-gnu/sound/usb/mixer_quirks.c
index 06965da51dd0..be0b3c8ac705 100644
--- linux-libre-6.6.85-gnu/sound/usb/mixer_quirks.c
+++ linux-libre-6.6.86-gnu/sound/usb/mixer_quirks.c
@@ -3575,6 +3575,52 @@ static void snd_dragonfly_quirk_db_scale(struct usb_mixer_interface *mixer,
 	}
 }
 
+/*
+ * Some Plantronics headsets have control names that don't meet ALSA naming
+ * standards. This function fixes nonstandard source names. By the time
+ * this function is called the control name should look like one of these:
+ * "source names Playback Volume"
+ * "source names Playback Switch"
+ * "source names Capture Volume"
+ * "source names Capture Switch"
+ * If any of the trigger words are found in the name then the name will
+ * be changed to:
+ * "Headset Playback Volume"
+ * "Headset Playback Switch"
+ * "Headset Capture Volume"
+ * "Headset Capture Switch"
+ * depending on the current suffix.
+ */
+static void snd_fix_plt_name(struct snd_usb_audio *chip,
+			     struct snd_ctl_elem_id *id)
+{
+	/* no variant of "Sidetone" should be added to this list */
+	static const char * const trigger[] = {
+		"Earphone", "Microphone", "Receive", "Transmit"
+	};
+	static const char * const suffix[] = {
+		" Playback Volume", " Playback Switch",
+		" Capture Volume", " Capture Switch"
+	};
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(trigger); i++)
+		if (strstr(id->name, trigger[i]))
+			goto triggered;
+	usb_audio_dbg(chip, "no change in %s\n", id->name);
+	return;
+
+triggered:
+	for (i = 0; i < ARRAY_SIZE(suffix); i++)
+		if (strstr(id->name, suffix[i])) {
+			usb_audio_dbg(chip, "fixing kctl name %s\n", id->name);
+			snprintf(id->name, sizeof(id->name), "Headset%s",
+				 suffix[i]);
+			return;
+		}
+	usb_audio_dbg(chip, "something wrong in kctl name %s\n", id->name);
+}
+
 void snd_usb_mixer_fu_apply_quirk(struct usb_mixer_interface *mixer,
 				  struct usb_mixer_elem_info *cval, int unitid,
 				  struct snd_kcontrol *kctl)
@@ -3592,5 +3638,10 @@ void snd_usb_mixer_fu_apply_quirk(struct usb_mixer_interface *mixer,
 			cval->min_mute = 1;
 		break;
 	}
+
+	/* ALSA-ify some Plantronics headset control names */
+	if (USB_ID_VENDOR(mixer->chip->usb_id) == 0x047f &&
+	    (cval->control == UAC_FU_MUTE || cval->control == UAC_FU_VOLUME))
+		snd_fix_plt_name(mixer->chip, &kctl->id);
 }
 
