Merging upstream version 6.7.7.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

22 files changed, 367 insertions, 303 deletions

diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index 790aa908e2..4ce74af796 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -880,11 +880,7 @@ config HID_PICOLCD_FB
 	default !EXPERT
 	depends on HID_PICOLCD
 	depends on HID_PICOLCD=FB || FB=y
-	select FB_DEFERRED_IO
-	select FB_SYS_FILLRECT
-	select FB_SYS_COPYAREA
-	select FB_SYS_IMAGEBLIT
-	select FB_SYS_FOPS
+	select FB_SYSMEM_HELPERS_DEFERRED
 	help
 	  Provide access to PicoLCD's 256x64 monochrome display via a
 	  framebuffer device.
@@ -1046,7 +1042,7 @@ config HID_SONY
 	  * Guitar Hero PS3 and PC guitar dongles
 
 config SONY_FF
-	bool "Sony PS2/3/4 accessories force feedback support" 
+	bool "Sony PS2/3/4 accessories force feedback support"
 	depends on HID_SONY
 	select INPUT_FF_MEMLESS
 	help
diff --git a/drivers/hid/amd-sfh-hid/hid_descriptor/amd_sfh_hid_desc.c b/drivers/hid/amd-sfh-hid/hid_descriptor/amd_sfh_hid_desc.c
index 8716a05950..ef1f9be8b8 100644
--- a/drivers/hid/amd-sfh-hid/hid_descriptor/amd_sfh_hid_desc.c
+++ b/drivers/hid/amd-sfh-hid/hid_descriptor/amd_sfh_hid_desc.c
@@ -257,6 +257,13 @@ static u8 get_input_report(u8 current_index, int sensor_idx, int report_id,
 		else
 			als_input.illuminance_value =
 				(int)sensor_virt_addr[0] / AMD_SFH_FW_MULTIPLIER;
+
+		if (sensor_idx == ACS_IDX) {
+			als_input.light_color_temp = sensor_virt_addr[1];
+			als_input.chromaticity_x_value = sensor_virt_addr[2];
+			als_input.chromaticity_y_value = sensor_virt_addr[3];
+		}
+
 		report_size = sizeof(als_input);
 		memcpy(input_report, &als_input, sizeof(als_input));
 		break;
diff --git a/drivers/hid/amd-sfh-hid/hid_descriptor/amd_sfh_hid_desc.h b/drivers/hid/amd-sfh-hid/hid_descriptor/amd_sfh_hid_desc.h
index ebd55675eb..882434b150 100644
--- a/drivers/hid/amd-sfh-hid/hid_descriptor/amd_sfh_hid_desc.h
+++ b/drivers/hid/amd-sfh-hid/hid_descriptor/amd_sfh_hid_desc.h
@@ -99,6 +99,9 @@ struct als_input_report {
 	struct common_input_property common_property;
 	/* values specific to this sensor */
 	int illuminance_value;
+	int light_color_temp;
+	int chromaticity_x_value;
+	int chromaticity_y_value;
 } __packed;
 
 struct hpd_feature_report {
diff --git a/drivers/hid/amd-sfh-hid/hid_descriptor/amd_sfh_hid_report_desc.h b/drivers/hid/amd-sfh-hid/hid_descriptor/amd_sfh_hid_report_desc.h
index 697f2791ea..67ec2d6a41 100644
--- a/drivers/hid/amd-sfh-hid/hid_descriptor/amd_sfh_hid_report_desc.h
+++ b/drivers/hid/amd-sfh-hid/hid_descriptor/amd_sfh_hid_report_desc.h
@@ -641,6 +641,27 @@ static const u8 als_report_descriptor[] = {
 0x75, 32,		/* HID report size(32) */
 0x95, 1,		/* HID report count (1) */
 0X81, 0x02,		/* HID Input (Data_Arr_Abs) */
+0x0A, 0xD2, 0x04,	/* HID usage sensor data light temperature */
+0x17, 0x00, 0x00, 0x01, 0x80,	 /* HID logical Min_32 */
+0x27, 0xFF, 0xFF, 0xFF, 0x7F,	 /* HID logical Max_32 */
+0x55, 0x0,		/* HID unit exponent(0x0) */
+0x75, 32,		/* HID report size(32) */
+0x95, 1,		/* HID report count (1) */
+0X81, 0x02,		/* HID Input (Data_Arr_Abs) */
+0x0A, 0xD4, 0x04,       /* HID usage sensor data light chromaticity_x */
+0x17, 0x00, 0x00, 0x01, 0x80,	 /* HID logical Min_32 */
+0x27, 0xFF, 0xFF, 0xFF, 0x7F,	 /* HID logical Max_32 */
+0x55, 0x0,		/* HID unit exponent(0x0) */
+0x75, 32,		/* HID report size(32) */
+0x95, 1,		/* HID report count(1) */
+0X81, 0x02,		/* HID Input (Data_Var_Abs) */
+0x0A, 0xD5, 0x04,       /* HID usage sensor data light chromaticity_y */
+0x17, 0x00, 0x00, 0x01, 0x80,	 /* HID logical Min_32 */
+0x27, 0xFF, 0xFF, 0xFF, 0x7F,	 /* HID logical Max_32 */
+0x55, 0x0,		/* HID unit exponent(0x0) */
+0x75, 32,		/* HID report size(32) */
+0x95, 1,		/* HID report count (1) */
+0X81, 0x02,		/* HID Input (Data_Var_Abs) */
 0xC0			/* HID end collection */
 };
 
diff --git a/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_desc.c b/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_desc.c
index 06bdcf072d..8a037de08e 100644
--- a/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_desc.c
+++ b/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_desc.c
@@ -188,6 +188,7 @@ static u8 get_input_rep(u8 current_index, int sensor_idx, int report_id,
 	struct sfh_mag_data mag_data;
 	struct sfh_als_data als_data;
 	struct hpd_status hpdstatus;
+	struct sfh_base_info binfo;
 	void __iomem *sensoraddr;
 	u8 report_size = 0;
 
@@ -235,6 +236,14 @@ static u8 get_input_rep(u8 current_index, int sensor_idx, int report_id,
 		memcpy_fromio(&als_data, sensoraddr, sizeof(struct sfh_als_data));
 		get_common_inputs(&als_input.common_property, report_id);
 		als_input.illuminance_value = float_to_int(als_data.lux);
+
+		memcpy_fromio(&binfo, mp2->vsbase, sizeof(struct sfh_base_info));
+		if (binfo.sbase.s_prop[ALS_IDX].sf.feat & 0x2) {
+			als_input.light_color_temp = als_data.light_color_temp;
+			als_input.chromaticity_x_value = float_to_int(als_data.chromaticity_x);
+			als_input.chromaticity_y_value = float_to_int(als_data.chromaticity_y);
+		}
+
 		report_size = sizeof(als_input);
 		memcpy(input_report, &als_input, sizeof(als_input));
 		break;
diff --git a/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_interface.h b/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_interface.h
index 9d31d5b510..656c3e95ef 100644
--- a/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_interface.h
+++ b/drivers/hid/amd-sfh-hid/sfh1_1/amd_sfh_interface.h
@@ -88,6 +88,16 @@ struct sfh_sensor_list {
 	};
 };
 
+struct sfh_sensor_prop {
+	union {
+		u32 sprop;
+		struct {
+			u32 elist	: 16;
+			u32 feat	: 16;
+		} sf;
+	};
+};
+
 struct sfh_base_info {
 	union {
 		u32 sfh_base[24];
@@ -95,6 +105,8 @@ struct sfh_base_info {
 			struct sfh_platform_info plat_info;
 			struct sfh_firmware_info  fw_info;
 			struct sfh_sensor_list s_list;
+			u32 rsvd;
+			struct sfh_sensor_prop s_prop[16];
 		} sbase;
 	};
 };
@@ -134,6 +146,9 @@ struct sfh_mag_data {
 struct sfh_als_data {
 	struct sfh_common_data commondata;
 	u32 lux;
+	u32 light_color_temp;
+	u32 chromaticity_x;
+	u32 chromaticity_y;
 };
 
 struct hpd_status {
diff --git a/drivers/hid/bpf/hid_bpf_dispatch.c b/drivers/hid/bpf/hid_bpf_dispatch.c
index d9ef45fcae..7903c8638e 100644
--- a/drivers/hid/bpf/hid_bpf_dispatch.c
+++ b/drivers/hid/bpf/hid_bpf_dispatch.c
@@ -241,6 +241,39 @@ int hid_bpf_reconnect(struct hid_device *hdev)
 	return 0;
 }
 
+static int do_hid_bpf_attach_prog(struct hid_device *hdev, int prog_fd, struct bpf_prog *prog,
+				  __u32 flags)
+{
+	int fd, err, prog_type;
+
+	prog_type = hid_bpf_get_prog_attach_type(prog);
+	if (prog_type < 0)
+		return prog_type;
+
+	if (prog_type >= HID_BPF_PROG_TYPE_MAX)
+		return -EINVAL;
+
+	if (prog_type == HID_BPF_PROG_TYPE_DEVICE_EVENT) {
+		err = hid_bpf_allocate_event_data(hdev);
+		if (err)
+			return err;
+	}
+
+	fd = __hid_bpf_attach_prog(hdev, prog_type, prog_fd, prog, flags);
+	if (fd < 0)
+		return fd;
+
+	if (prog_type == HID_BPF_PROG_TYPE_RDESC_FIXUP) {
+		err = hid_bpf_reconnect(hdev);
+		if (err) {
+			close_fd(fd);
+			return err;
+		}
+	}
+
+	return fd;
+}
+
 /**
  * hid_bpf_attach_prog - Attach the given @prog_fd to the given HID device
  *
@@ -257,18 +290,13 @@ noinline int
 hid_bpf_attach_prog(unsigned int hid_id, int prog_fd, __u32 flags)
 {
 	struct hid_device *hdev;
+	struct bpf_prog *prog;
 	struct device *dev;
-	int fd, err, prog_type = hid_bpf_get_prog_attach_type(prog_fd);
+	int err, fd;
 
 	if (!hid_bpf_ops)
 		return -EINVAL;
 
-	if (prog_type < 0)
-		return prog_type;
-
-	if (prog_type >= HID_BPF_PROG_TYPE_MAX)
-		return -EINVAL;
-
 	if ((flags & ~HID_BPF_FLAG_MASK))
 		return -EINVAL;
 
@@ -278,25 +306,29 @@ hid_bpf_attach_prog(unsigned int hid_id, int prog_fd, __u32 flags)
 
 	hdev = to_hid_device(dev);
 
-	if (prog_type == HID_BPF_PROG_TYPE_DEVICE_EVENT) {
-		err = hid_bpf_allocate_event_data(hdev);
-		if (err)
-			return err;
+	/*
+	 * take a ref on the prog itself, it will be released
+	 * on errors or when it'll be detached
+	 */
+	prog = bpf_prog_get(prog_fd);
+	if (IS_ERR(prog)) {
+		err = PTR_ERR(prog);
+		goto out_dev_put;
 	}
 
-	fd = __hid_bpf_attach_prog(hdev, prog_type, prog_fd, flags);
-	if (fd < 0)
-		return fd;
-
-	if (prog_type == HID_BPF_PROG_TYPE_RDESC_FIXUP) {
-		err = hid_bpf_reconnect(hdev);
-		if (err) {
-			close_fd(fd);
-			return err;
-		}
+	fd = do_hid_bpf_attach_prog(hdev, prog_fd, prog, flags);
+	if (fd < 0) {
+		err = fd;
+		goto out_prog_put;
 	}
 
 	return fd;
+
+ out_prog_put:
+	bpf_prog_put(prog);
+ out_dev_put:
+	put_device(dev);
+	return err;
 }
 
 /**
@@ -323,8 +355,10 @@ hid_bpf_allocate_context(unsigned int hid_id)
 	hdev = to_hid_device(dev);
 
 	ctx_kern = kzalloc(sizeof(*ctx_kern), GFP_KERNEL);
-	if (!ctx_kern)
+	if (!ctx_kern) {
+		put_device(dev);
 		return NULL;
+	}
 
 	ctx_kern->ctx.hid = hdev;
 
@@ -341,10 +375,15 @@ noinline void
 hid_bpf_release_context(struct hid_bpf_ctx *ctx)
 {
 	struct hid_bpf_ctx_kern *ctx_kern;
+	struct hid_device *hid;
 
 	ctx_kern = container_of(ctx, struct hid_bpf_ctx_kern, ctx);
+	hid = (struct hid_device *)ctx_kern->ctx.hid; /* ignore const */
 
 	kfree(ctx_kern);
+
+	/* get_device() is called by bus_find_device() */
+	put_device(&hid->dev);
 }
 
 /**
diff --git a/drivers/hid/bpf/hid_bpf_dispatch.h b/drivers/hid/bpf/hid_bpf_dispatch.h
index 63dfc8605c..fbe0639d09 100644
--- a/drivers/hid/bpf/hid_bpf_dispatch.h
+++ b/drivers/hid/bpf/hid_bpf_dispatch.h
@@ -12,9 +12,9 @@ struct hid_bpf_ctx_kern {
 
 int hid_bpf_preload_skel(void);
 void hid_bpf_free_links_and_skel(void);
-int hid_bpf_get_prog_attach_type(int prog_fd);
+int hid_bpf_get_prog_attach_type(struct bpf_prog *prog);
 int __hid_bpf_attach_prog(struct hid_device *hdev, enum hid_bpf_prog_type prog_type, int prog_fd,
-			  __u32 flags);
+			  struct bpf_prog *prog, __u32 flags);
 void __hid_bpf_destroy_device(struct hid_device *hdev);
 int hid_bpf_prog_run(struct hid_device *hdev, enum hid_bpf_prog_type type,
 		     struct hid_bpf_ctx_kern *ctx_kern);
diff --git a/drivers/hid/bpf/hid_bpf_jmp_table.c b/drivers/hid/bpf/hid_bpf_jmp_table.c
index eca34b7372..aa8e1c79cd 100644
--- a/drivers/hid/bpf/hid_bpf_jmp_table.c
+++ b/drivers/hid/bpf/hid_bpf_jmp_table.c
@@ -196,6 +196,7 @@ static void __hid_bpf_do_release_prog(int map_fd, unsigned int idx)
 static void hid_bpf_release_progs(struct work_struct *work)
 {
 	int i, j, n, map_fd = -1;
+	bool hdev_destroyed;
 
 	if (!jmp_table.map)
 		return;
@@ -220,6 +221,12 @@ static void hid_bpf_release_progs(struct work_struct *work)
 		if (entry->hdev) {
 			hdev = entry->hdev;
 			type = entry->type;
+			/*
+			 * hdev is still valid, even if we are called after hid_destroy_device():
+			 * when hid_bpf_attach() gets called, it takes a ref on the dev through
+			 * bus_find_device()
+			 */
+			hdev_destroyed = hdev->bpf.destroyed;
 
 			hid_bpf_populate_hdev(hdev, type);
 
@@ -232,12 +239,19 @@ static void hid_bpf_release_progs(struct work_struct *work)
 				if (test_bit(next->idx, jmp_table.enabled))
 					continue;
 
-				if (next->hdev == hdev && next->type == type)
+				if (next->hdev == hdev && next->type == type) {
+					/*
+					 * clear the hdev reference and decrement the device ref
+					 * that was taken during bus_find_device() while calling
+					 * hid_bpf_attach()
+					 */
 					next->hdev = NULL;
+					put_device(&hdev->dev);
+				}
 			}
 
-			/* if type was rdesc fixup, reconnect device */
-			if (type == HID_BPF_PROG_TYPE_RDESC_FIXUP)
+			/* if type was rdesc fixup and the device is not gone, reconnect device */
+			if (type == HID_BPF_PROG_TYPE_RDESC_FIXUP && !hdev_destroyed)
 				hid_bpf_reconnect(hdev);
 		}
 	}
@@ -333,15 +347,10 @@ static int hid_bpf_insert_prog(int prog_fd, struct bpf_prog *prog)
 	return err;
 }
 
-int hid_bpf_get_prog_attach_type(int prog_fd)
+int hid_bpf_get_prog_attach_type(struct bpf_prog *prog)
 {
-	struct bpf_prog *prog = NULL;
-	int i;
 	int prog_type = HID_BPF_PROG_TYPE_UNDEF;
-
-	prog = bpf_prog_get(prog_fd);
-	if (IS_ERR(prog))
-		return PTR_ERR(prog);
+	int i;
 
 	for (i = 0; i < HID_BPF_PROG_TYPE_MAX; i++) {
 		if (hid_bpf_btf_ids[i] == prog->aux->attach_btf_id) {
@@ -350,8 +359,6 @@ int hid_bpf_get_prog_attach_type(int prog_fd)
 		}
 	}
 
-	bpf_prog_put(prog);
-
 	return prog_type;
 }
 
@@ -388,19 +395,13 @@ static const struct bpf_link_ops hid_bpf_link_lops = {
 /* called from syscall */
 noinline int
 __hid_bpf_attach_prog(struct hid_device *hdev, enum hid_bpf_prog_type prog_type,
-		      int prog_fd, __u32 flags)
+		      int prog_fd, struct bpf_prog *prog, __u32 flags)
 {
 	struct bpf_link_primer link_primer;
 	struct hid_bpf_link *link;
-	struct bpf_prog *prog = NULL;
 	struct hid_bpf_prog_entry *prog_entry;
 	int cnt, err = -EINVAL, prog_table_idx = -1;
 
-	/* take a ref on the prog itself */
-	prog = bpf_prog_get(prog_fd);
-	if (IS_ERR(prog))
-		return PTR_ERR(prog);
-
 	mutex_lock(&hid_bpf_attach_lock);
 
 	link = kzalloc(sizeof(*link), GFP_USER);
@@ -467,7 +468,6 @@ __hid_bpf_attach_prog(struct hid_device *hdev, enum hid_bpf_prog_type prog_type,
  err_unlock:
 	mutex_unlock(&hid_bpf_attach_lock);
 
-	bpf_prog_put(prog);
 	kfree(link);
 
 	return err;
diff --git a/drivers/hid/hid-apple.c b/drivers/hid/hid-apple.c
index d9e9829b22..b9c7c0ed7b 100644
--- a/drivers/hid/hid-apple.c
+++ b/drivers/hid/hid-apple.c
@@ -347,6 +347,8 @@ static const struct apple_non_apple_keyboard non_apple_keyboards[] = {
 	{ "Hailuck" },
 	{ "Jamesdonkey" },
 	{ "A3R" },
+	{ "hfd.cn" },
+	{ "WKB603" },
 };
 
 static bool apple_is_non_apple_keyboard(struct hid_device *hdev)
diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c
index 7bf12ca0eb..6ef0c88e3e 100644
--- a/drivers/hid/hid-logitech-hidpp.c
+++ b/drivers/hid/hid-logitech-hidpp.c
@@ -69,12 +69,11 @@ MODULE_PARM_DESC(disable_tap_to_click,
 #define HIDPP_QUIRK_WTP_PHYSICAL_BUTTONS	BIT(22)
 #define HIDPP_QUIRK_DELAYED_INIT		BIT(23)
 #define HIDPP_QUIRK_FORCE_OUTPUT_REPORTS	BIT(24)
-#define HIDPP_QUIRK_UNIFYING			BIT(25)
-#define HIDPP_QUIRK_HIDPP_WHEELS		BIT(26)
-#define HIDPP_QUIRK_HIDPP_EXTRA_MOUSE_BTNS	BIT(27)
-#define HIDPP_QUIRK_HIDPP_CONSUMER_VENDOR_KEYS	BIT(28)
-#define HIDPP_QUIRK_HI_RES_SCROLL_1P0		BIT(29)
-#define HIDPP_QUIRK_WIRELESS_STATUS		BIT(30)
+#define HIDPP_QUIRK_HIDPP_WHEELS		BIT(25)
+#define HIDPP_QUIRK_HIDPP_EXTRA_MOUSE_BTNS	BIT(26)
+#define HIDPP_QUIRK_HIDPP_CONSUMER_VENDOR_KEYS	BIT(27)
+#define HIDPP_QUIRK_HI_RES_SCROLL_1P0		BIT(28)
+#define HIDPP_QUIRK_WIRELESS_STATUS		BIT(29)
 
 /* These are just aliases for now */
 #define HIDPP_QUIRK_KBD_SCROLL_WHEEL HIDPP_QUIRK_HIDPP_WHEELS
@@ -194,7 +193,6 @@ struct hidpp_device {
 
 	struct work_struct work;
 	struct kfifo delayed_work_fifo;
-	atomic_t connected;
 	struct input_dev *delayed_input;
 
 	unsigned long quirks;
@@ -235,8 +233,6 @@ struct hidpp_device {
 #define HIDPP20_ERROR_UNSUPPORTED		0x09
 #define HIDPP20_ERROR				0xff
 
-static void hidpp_connect_event(struct hidpp_device *hidpp_dev);
-
 static int __hidpp_send_report(struct hid_device *hdev,
 				struct hidpp_report *hidpp_report)
 {
@@ -450,13 +446,6 @@ static int hidpp_send_rap_command_sync(struct hidpp_device *hidpp_dev,
 	return ret;
 }
 
-static void delayed_work_cb(struct work_struct *work)
-{
-	struct hidpp_device *hidpp = container_of(work, struct hidpp_device,
-							work);
-	hidpp_connect_event(hidpp);
-}
-
 static inline bool hidpp_match_answer(struct hidpp_report *question,
 		struct hidpp_report *answer)
 {
@@ -3141,7 +3130,7 @@ static int wtp_allocate(struct hid_device *hdev, const struct hid_device_id *id)
 	return 0;
 };
 
-static int wtp_connect(struct hid_device *hdev, bool connected)
+static int wtp_connect(struct hid_device *hdev)
 {
 	struct hidpp_device *hidpp = hid_get_drvdata(hdev);
 	struct wtp_data *wd = hidpp->private_data;
@@ -3203,7 +3192,7 @@ static const u8 m560_config_parameter[] = {0x00, 0xaf, 0x03};
 #define M560_SUB_ID			0x0a
 #define M560_BUTTON_MODE_REGISTER	0x35
 
-static int m560_send_config_command(struct hid_device *hdev, bool connected)
+static int m560_send_config_command(struct hid_device *hdev)
 {
 	struct hidpp_report response;
 	struct hidpp_device *hidpp_dev;
@@ -3398,7 +3387,7 @@ static int k400_allocate(struct hid_device *hdev)
 	return 0;
 };
 
-static int k400_connect(struct hid_device *hdev, bool connected)
+static int k400_connect(struct hid_device *hdev)
 {
 	struct hidpp_device *hidpp = hid_get_drvdata(hdev);
 
@@ -3893,8 +3882,6 @@ static int hidpp_raw_hidpp_event(struct hidpp_device *hidpp, u8 *data,
 	}
 
 	if (unlikely(hidpp_report_is_connect_event(hidpp, report))) {
-		atomic_set(&hidpp->connected,
-				!(report->rap.params[0] & (1 << 6)));
 		if (schedule_work(&hidpp->work) == 0)
 			dbg_hid("%s: connect event already queued\n", __func__);
 		return 1;
@@ -4130,24 +4117,22 @@ static int hidpp_initialize_battery(struct hidpp_device *hidpp)
 	return ret;
 }
 
-static void hidpp_overwrite_name(struct hid_device *hdev)
+/* Get name + serial for USB and Bluetooth HID++ devices */
+static void hidpp_non_unifying_init(struct hidpp_device *hidpp)
 {
-	struct hidpp_device *hidpp = hid_get_drvdata(hdev);
+	struct hid_device *hdev = hidpp->hid_dev;
 	char *name;
 
-	if (hidpp->protocol_major < 2)
-		return;
+	/* Bluetooth devices already have their serialnr set */
+	if (hid_is_usb(hdev))
+		hidpp_serial_init(hidpp);
 
 	name = hidpp_get_device_name(hidpp);
-
-	if (!name) {
-		hid_err(hdev, "unable to retrieve the name of the device");
-	} else {
+	if (name) {
 		dbg_hid("HID++: Got name: %s\n", name);
 		snprintf(hdev->name, sizeof(hdev->name), "%s", name);
+		kfree(name);
 	}
-
-	kfree(name);
 }
 
 static int hidpp_input_open(struct input_dev *dev)
@@ -4188,15 +4173,18 @@ static struct input_dev *hidpp_allocate_input(struct hid_device *hdev)
 	return input_dev;
 }
 
-static void hidpp_connect_event(struct hidpp_device *hidpp)
+static void hidpp_connect_event(struct work_struct *work)
 {
+	struct hidpp_device *hidpp = container_of(work, struct hidpp_device, work);
 	struct hid_device *hdev = hidpp->hid_dev;
-	int ret = 0;
-	bool connected = atomic_read(&hidpp->connected);
 	struct input_dev *input;
 	char *name, *devm_name;
+	int ret;
 
-	if (!connected) {
+	/* Get device version to check if it is connected */
+	ret = hidpp_root_get_protocol_version(hidpp);
+	if (ret) {
+		hid_info(hidpp->hid_dev, "Disconnected\n");
 		if (hidpp->battery.ps) {
 			hidpp->battery.online = false;
 			hidpp->battery.status = POWER_SUPPLY_STATUS_UNKNOWN;
@@ -4207,15 +4195,15 @@ static void hidpp_connect_event(struct hidpp_device *hidpp)
 	}
 
 	if (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP) {
-		ret = wtp_connect(hdev, connected);
+		ret = wtp_connect(hdev);
 		if (ret)
 			return;
 	} else if (hidpp->quirks & HIDPP_QUIRK_CLASS_M560) {
-		ret = m560_send_config_command(hdev, connected);
+		ret = m560_send_config_command(hdev);
 		if (ret)
 			return;
 	} else if (hidpp->quirks & HIDPP_QUIRK_CLASS_K400) {
-		ret = k400_connect(hdev, connected);
+		ret = k400_connect(hdev);
 		if (ret)
 			return;
 	}
@@ -4238,16 +4226,6 @@ static void hidpp_connect_event(struct hidpp_device *hidpp)
 			return;
 	}
 
-	/* the device is already connected, we can ask for its name and
-	 * protocol */
-	if (!hidpp->protocol_major) {
-		ret = hidpp_root_get_protocol_version(hidpp);
-		if (ret) {
-			hid_err(hdev, "Can not get the protocol version.\n");
-			return;
-		}
-	}
-
 	if (hidpp->protocol_major >= 2) {
 		u8 feature_index;
 
@@ -4397,9 +4375,7 @@ static int hidpp_probe(struct hid_device *hdev, const struct hid_device_id *id)
 {
 	struct hidpp_device *hidpp;
 	int ret;
-	bool connected;
 	unsigned int connect_mask = HID_CONNECT_DEFAULT;
-	struct hidpp_ff_private_data data;
 
 	/* report_fixup needs drvdata to be set before we call hid_parse */
 	hidpp = devm_kzalloc(&hdev->dev, sizeof(*hidpp), GFP_KERNEL);
@@ -4428,9 +4404,6 @@ static int hidpp_probe(struct hid_device *hdev, const struct hid_device_id *id)
 		return hid_hw_start(hdev, HID_CONNECT_DEFAULT);
 	}
 
-	if (id->group == HID_GROUP_LOGITECH_DJ_DEVICE)
-		hidpp->quirks |= HIDPP_QUIRK_UNIFYING;
-
 	if (id->group == HID_GROUP_LOGITECH_27MHZ_DEVICE &&
 	    hidpp_application_equals(hdev, HID_GD_MOUSE))
 		hidpp->quirks |= HIDPP_QUIRK_HIDPP_WHEELS |
@@ -4450,7 +4423,7 @@ static int hidpp_probe(struct hid_device *hdev, const struct hid_device_id *id)
 			return ret;
 	}
 
-	INIT_WORK(&hidpp->work, delayed_work_cb);
+	INIT_WORK(&hidpp->work, hidpp_connect_event);
 	mutex_init(&hidpp->send_mutex);
 	init_waitqueue_head(&hidpp->wait);
 
@@ -4482,48 +4455,35 @@ static int hidpp_probe(struct hid_device *hdev, const struct hid_device_id *id)
 	/* Allow incoming packets */
 	hid_device_io_start(hdev);
 
-	if (hidpp->quirks & HIDPP_QUIRK_UNIFYING)
+	/* Get name + serial, store in hdev->name + hdev->uniq */
+	if (id->group == HID_GROUP_LOGITECH_DJ_DEVICE)
 		hidpp_unifying_init(hidpp);
-	else if (hid_is_usb(hidpp->hid_dev))
-		hidpp_serial_init(hidpp);
-
-	connected = hidpp_root_get_protocol_version(hidpp) == 0;
-	atomic_set(&hidpp->connected, connected);
-	if (!(hidpp->quirks & HIDPP_QUIRK_UNIFYING)) {
-		if (!connected) {
-			ret = -ENODEV;
-			hid_err(hdev, "Device not connected");
-			goto hid_hw_init_fail;
-		}
-
-		hidpp_overwrite_name(hdev);
-	}
-
-	if (connected && (hidpp->quirks & HIDPP_QUIRK_CLASS_WTP)) {
-		ret = wtp_get_config(hidpp);
-		if (ret)
-			goto hid_hw_init_fail;
-	} else if (connected && (hidpp->quirks & HIDPP_QUIRK_CLASS_G920)) {
-		ret = g920_get_config(hidpp, &data);
-		if (ret)
-			goto hid_hw_init_fail;
-	}
-
-	schedule_work(&hidpp->work);
-	flush_work(&hidpp->work);
+	else
+		hidpp_non_unifying_init(hidpp);
 
 	if (hidpp->quirks & HIDPP_QUIRK_DELAYED_INIT)
 		connect_mask &= ~HID_CONNECT_HIDINPUT;
 
 	/* Now export the actual inputs and hidraw nodes to the world */
+	hid_device_io_stop(hdev);
 	ret = hid_connect(hdev, connect_mask);
 	if (ret) {
 		hid_err(hdev, "%s:hid_connect returned error %d\n", __func__, ret);
 		goto hid_hw_init_fail;
 	}
 
+	/* Check for connected devices now that incoming packets will not be disabled again */
+	hid_device_io_start(hdev);
+	schedule_work(&hidpp->work);
+	flush_work(&hidpp->work);
+
 	if (hidpp->quirks & HIDPP_QUIRK_CLASS_G920) {
-		ret = hidpp_ff_init(hidpp, &data);
+		struct hidpp_ff_private_data data;
+
+		ret = g920_get_config(hidpp, &data);
+		if (!ret)
+			ret = hidpp_ff_init(hidpp, &data);
+
 		if (ret)
 			hid_warn(hidpp->hid_dev,
 		     "Unable to initialize force feedback support, errno %d\n",
@@ -4650,6 +4610,8 @@ static const struct hid_device_id hidpp_devices[] = {
 	  HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, 0xC088) },
 	{ /* Logitech G Pro X Superlight Gaming Mouse over USB */
 	  HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, 0xC094) },
+	{ /* Logitech G Pro X Superlight 2 Gaming Mouse over USB */
+	  HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, 0xC09b) },
 
 	{ /* G935 Gaming Headset */
 	  HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, 0x0a87),
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index 5ec1f17412..fd5b0637da 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -1802,7 +1802,6 @@ static int mt_probe(struct hid_device *hdev, const struct hid_device_id *id)
 	return 0;
 }
 
-#ifdef CONFIG_PM
 static int mt_suspend(struct hid_device *hdev, pm_message_t state)
 {
 	struct mt_device *td = hid_get_drvdata(hdev);
@@ -1836,7 +1835,6 @@ static int mt_resume(struct hid_device *hdev)
 
 	return 0;
 }
-#endif
 
 static void mt_remove(struct hid_device *hdev)
 {
@@ -2264,10 +2262,8 @@ static struct hid_driver mt_driver = {
 	.usage_table = mt_grabbed_usages,
 	.event = mt_event,
 	.report = mt_report,
-#ifdef CONFIG_PM
-	.suspend = mt_suspend,
-	.reset_resume = mt_reset_resume,
-	.resume = mt_resume,
-#endif
+	.suspend = pm_ptr(mt_suspend),
+	.reset_resume = pm_ptr(mt_reset_resume),
+	.resume = pm_ptr(mt_resume),
 };
 module_hid_driver(mt_driver);
diff --git a/drivers/hid/hid-nintendo.c b/drivers/hid/hid-nintendo.c
index 4850e915a5..997c3a1ada 100644
--- a/drivers/hid/hid-nintendo.c
+++ b/drivers/hid/hid-nintendo.c
@@ -410,6 +410,18 @@ static const char * const joycon_player_led_names[] = {
 	LED_FUNCTION_PLAYER4,
 };
 #define JC_NUM_LEDS		ARRAY_SIZE(joycon_player_led_names)
+#define JC_NUM_LED_PATTERNS 8
+/* Taken from https://www.nintendo.com/my/support/qa/detail/33822 */
+static const enum led_brightness joycon_player_led_patterns[JC_NUM_LED_PATTERNS][JC_NUM_LEDS] = {
+	{ 1, 0, 0, 0 },
+	{ 1, 1, 0, 0 },
+	{ 1, 1, 1, 0 },
+	{ 1, 1, 1, 1 },
+	{ 1, 0, 0, 1 },
+	{ 1, 0, 1, 0 },
+	{ 1, 0, 1, 1 },
+	{ 0, 1, 1, 0 },
+};
 
 /* Each physical controller is associated with a joycon_ctlr struct */
 struct joycon_ctlr {
@@ -699,6 +711,25 @@ static int joycon_set_player_leds(struct joycon_ctlr *ctlr, u8 flash, u8 on)
 	return joycon_send_subcmd(ctlr, req, 1, HZ/4);
 }
 
+static int joycon_set_home_led(struct joycon_ctlr *ctlr, enum led_brightness brightness)
+{
+	struct joycon_subcmd_request *req;
+	u8 buffer[sizeof(*req) + 5] = { 0 };
+	u8 *data;
+
+	req = (struct joycon_subcmd_request *)buffer;
+	req->subcmd_id = JC_SUBCMD_SET_HOME_LIGHT;
+	data = req->data;
+	data[0] = 0x01;
+	data[1] = brightness << 4;
+	data[2] = brightness | (brightness << 4);
+	data[3] = 0x11;
+	data[4] = 0x11;
+
+	hid_dbg(ctlr->hdev, "setting home led brightness\n");
+	return joycon_send_subcmd(ctlr, req, 5, HZ/4);
+}
+
 static int joycon_request_spi_flash_read(struct joycon_ctlr *ctlr,
 					 u32 start_addr, u8 size, u8 **reply)
 {
@@ -1853,6 +1884,7 @@ static int joycon_input_create(struct joycon_ctlr *ctlr)
 	return 0;
 }
 
+/* Because the subcommand sets all the leds at once, the brightness argument is ignored */
 static int joycon_player_led_brightness_set(struct led_classdev *led,
 					    enum led_brightness brightness)
 {
@@ -1862,7 +1894,6 @@ static int joycon_player_led_brightness_set(struct led_classdev *led,
 	int val = 0;
 	int i;
 	int ret;
-	int num;
 
 	ctlr = hid_get_drvdata(hdev);
 	if (!ctlr) {
@@ -1870,21 +1901,10 @@ static int joycon_player_led_brightness_set(struct led_classdev *led,
 		return -ENODEV;
 	}
 
-	/* determine which player led this is */
-	for (num = 0; num < JC_NUM_LEDS; num++) {
-		if (&ctlr->leds[num] == led)
-			break;
-	}
-	if (num >= JC_NUM_LEDS)
-		return -EINVAL;
+	for (i = 0; i < JC_NUM_LEDS; i++)
+		val |= ctlr->leds[i].brightness << i;
 
 	mutex_lock(&ctlr->output_mutex);
-	for (i = 0; i < JC_NUM_LEDS; i++) {
-		if (i == num)
-			val |= brightness << i;
-		else
-			val |= ctlr->leds[i].brightness << i;
-	}
 	ret = joycon_set_player_leds(ctlr, 0, val);
 	mutex_unlock(&ctlr->output_mutex);
 
@@ -1897,9 +1917,6 @@ static int joycon_home_led_brightness_set(struct led_classdev *led,
 	struct device *dev = led->dev->parent;
 	struct hid_device *hdev = to_hid_device(dev);
 	struct joycon_ctlr *ctlr;
-	struct joycon_subcmd_request *req;
-	u8 buffer[sizeof(*req) + 5] = { 0 };
-	u8 *data;
 	int ret;
 
 	ctlr = hid_get_drvdata(hdev);
@@ -1907,43 +1924,35 @@ static int joycon_home_led_brightness_set(struct led_classdev *led,
 		hid_err(hdev, "No controller data\n");
 		return -ENODEV;
 	}
-
-	req = (struct joycon_subcmd_request *)buffer;
-	req->subcmd_id = JC_SUBCMD_SET_HOME_LIGHT;
-	data = req->data;
-	data[0] = 0x01;
-	data[1] = brightness << 4;
-	data[2] = brightness | (brightness << 4);
-	data[3] = 0x11;
-	data[4] = 0x11;
-
-	hid_dbg(hdev, "setting home led brightness\n");
 	mutex_lock(&ctlr->output_mutex);
-	ret = joycon_send_subcmd(ctlr, req, 5, HZ/4);
+	ret = joycon_set_home_led(ctlr, brightness);
 	mutex_unlock(&ctlr->output_mutex);
-
 	return ret;
 }
 
-static DEFINE_MUTEX(joycon_input_num_mutex);
+static DEFINE_SPINLOCK(joycon_input_num_spinlock);
 static int joycon_leds_create(struct joycon_ctlr *ctlr)
 {
 	struct hid_device *hdev = ctlr->hdev;
 	struct device *dev = &hdev->dev;
 	const char *d_name = dev_name(dev);
 	struct led_classdev *led;
+	int led_val = 0;
 	char *name;
-	int ret = 0;
+	int ret;
 	int i;
-	static int input_num = 1;
+	unsigned long flags;
+	int player_led_pattern;
+	static int input_num;
 
-	/* Set the default controller player leds based on controller number */
-	mutex_lock(&joycon_input_num_mutex);
-	mutex_lock(&ctlr->output_mutex);
-	ret = joycon_set_player_leds(ctlr, 0, 0xF >> (4 - input_num));
-	if (ret)
-		hid_warn(ctlr->hdev, "Failed to set leds; ret=%d\n", ret);
-	mutex_unlock(&ctlr->output_mutex);
+	/*
+	 * Set the player leds based on controller number
+	 * Because there is no standard concept of "player number", the pattern
+	 * number will simply increase by 1 every time a controller is connected.
+	 */
+	spin_lock_irqsave(&joycon_input_num_spinlock, flags);
+	player_led_pattern = input_num++ % JC_NUM_LED_PATTERNS;
+	spin_unlock_irqrestore(&joycon_input_num_spinlock, flags);
 
 	/* configure the player LEDs */
 	for (i = 0; i < JC_NUM_LEDS; i++) {
@@ -1951,31 +1960,37 @@ static int joycon_leds_create(struct joycon_ctlr *ctlr)
 				      d_name,
 				      "green",
 				      joycon_player_led_names[i]);
-		if (!name) {
-			mutex_unlock(&joycon_input_num_mutex);
+		if (!name)
 			return -ENOMEM;
-		}
 
 		led = &ctlr->leds[i];
 		led->name = name;
-		led->brightness = ((i + 1) <= input_num) ? 1 : 0;
+		led->brightness = joycon_player_led_patterns[player_led_pattern][i];
 		led->max_brightness = 1;
 		led->brightness_set_blocking =
 					joycon_player_led_brightness_set;
 		led->flags = LED_CORE_SUSPENDRESUME | LED_HW_PLUGGABLE;
 
+		led_val |= joycon_player_led_patterns[player_led_pattern][i] << i;
+	}
+	mutex_lock(&ctlr->output_mutex);
+	ret = joycon_set_player_leds(ctlr, 0, led_val);
+	mutex_unlock(&ctlr->output_mutex);
+	if (ret) {
+		hid_warn(hdev, "Failed to set players LEDs, skipping registration; ret=%d\n", ret);
+		goto home_led;
+	}
+
+	for (i = 0; i < JC_NUM_LEDS; i++) {
+		led = &ctlr->leds[i];
 		ret = devm_led_classdev_register(&hdev->dev, led);
 		if (ret) {
-			hid_err(hdev, "Failed registering %s LED\n", led->name);
-			mutex_unlock(&joycon_input_num_mutex);
+			hid_err(hdev, "Failed to register player %d LED; ret=%d\n", i + 1, ret);
 			return ret;
 		}
 	}
 
-	if (++input_num > 4)
-		input_num = 1;
-	mutex_unlock(&joycon_input_num_mutex);
-
+home_led:
 	/* configure the home LED */
 	if (jc_type_has_right(ctlr)) {
 		name = devm_kasprintf(dev, GFP_KERNEL, "%s:%s:%s",
@@ -1991,16 +2006,20 @@ static int joycon_leds_create(struct joycon_ctlr *ctlr)
 		led->max_brightness = 0xF;
 		led->brightness_set_blocking = joycon_home_led_brightness_set;
 		led->flags = LED_CORE_SUSPENDRESUME | LED_HW_PLUGGABLE;
-		ret = devm_led_classdev_register(&hdev->dev, led);
+
+		/* Set the home LED to 0 as default state */
+		mutex_lock(&ctlr->output_mutex);
+		ret = joycon_set_home_led(ctlr, 0);
+		mutex_unlock(&ctlr->output_mutex);
 		if (ret) {
-			hid_err(hdev, "Failed registering home led\n");
-			return ret;
+			hid_warn(hdev, "Failed to set home LED, skipping registration; ret=%d\n", ret);
+			return 0;
 		}
-		/* Set the home LED to 0 as default state */
-		ret = joycon_home_led_brightness_set(led, 0);
+
+		ret = devm_led_classdev_register(&hdev->dev, led);
 		if (ret) {
-			hid_warn(hdev, "Failed to set home LED default, unregistering home LED");
-			devm_led_classdev_unregister(&hdev->dev, led);
+			hid_err(hdev, "Failed to register home LED; ret=%d\n", ret);
+			return ret;
 		}
 	}
 
diff --git a/drivers/hid/hid-nvidia-shield.c b/drivers/hid/hid-nvidia-shield.c
index c463e54dec..58b15750db 100644
--- a/drivers/hid/hid-nvidia-shield.c
+++ b/drivers/hid/hid-nvidia-shield.c
@@ -800,6 +800,8 @@ static inline int thunderstrike_led_create(struct thunderstrike *ts)
 
 	led->name = devm_kasprintf(&ts->base.hdev->dev, GFP_KERNEL,
 				   "thunderstrike%d:blue:led", ts->id);
+	if (!led->name)
+		return -ENOMEM;
 	led->max_brightness = 1;
 	led->flags = LED_CORE_SUSPENDRESUME | LED_RETAIN_AT_SHUTDOWN;
 	led->brightness_get = &thunderstrike_led_get_brightness;
@@ -831,6 +833,8 @@ static inline int thunderstrike_psy_create(struct shield_device *shield_dev)
 	shield_dev->battery_dev.desc.name =
 		devm_kasprintf(&ts->base.hdev->dev, GFP_KERNEL,
 			       "thunderstrike_%d", ts->id);
+	if (!shield_dev->battery_dev.desc.name)
+		return -ENOMEM;
 
 	shield_dev->battery_dev.psy = power_supply_register(
 		&hdev->dev, &shield_dev->battery_dev.desc, &psy_cfg);
@@ -915,6 +919,15 @@ err_id:
 	return ERR_PTR(ret);
 }
 
+static void thunderstrike_destroy(struct thunderstrike *ts)
+{
+	led_classdev_unregister(&ts->led_dev);
+	power_supply_unregister(ts->base.battery_dev.psy);
+	if (ts->haptics_dev)
+		input_unregister_device(ts->haptics_dev);
+	ida_free(&thunderstrike_ida, ts->id);
+}
+
 static int android_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 				 struct hid_field *field,
 				 struct hid_usage *usage, unsigned long **bit,
@@ -1074,11 +1087,7 @@ static int shield_probe(struct hid_device *hdev, const struct hid_device_id *id)
 err_stop:
 	hid_hw_stop(hdev);
 err_ts_create:
-	power_supply_unregister(ts->base.battery_dev.psy);
-	if (ts->haptics_dev)
-		input_unregister_device(ts->haptics_dev);
-	led_classdev_unregister(&ts->led_dev);
-	ida_free(&thunderstrike_ida, ts->id);
+	thunderstrike_destroy(ts);
 	return ret;
 }
 
@@ -1090,11 +1099,7 @@ static void shield_remove(struct hid_device *hdev)
 	ts = container_of(dev, struct thunderstrike, base);
 
 	hid_hw_close(hdev);
-	power_supply_unregister(dev->battery_dev.psy);
-	if (ts->haptics_dev)
-		input_unregister_device(ts->haptics_dev);
-	led_classdev_unregister(&ts->led_dev);
-	ida_free(&thunderstrike_ida, ts->id);
+	thunderstrike_destroy(ts);
 	del_timer_sync(&ts->psy_stats_timer);
 	cancel_work_sync(&ts->hostcmd_req_work);
 	hid_hw_stop(hdev);
diff --git a/drivers/hid/hid-picolcd_fb.c b/drivers/hid/hid-picolcd_fb.c
index d726aaafb1..a4dccdcda2 100644
--- a/drivers/hid/hid-picolcd_fb.c
+++ b/drivers/hid/hid-picolcd_fb.c
@@ -283,54 +283,6 @@ out:
 	mutex_unlock(&info->lock);
 }
 
-/* Stub to call the system default and update the image on the picoLCD */
-static void picolcd_fb_fillrect(struct fb_info *info,
-		const struct fb_fillrect *rect)
-{
-	if (!info->par)
-		return;
-	sys_fillrect(info, rect);
-
-	schedule_delayed_work(&info->deferred_work, 0);
-}
-
-/* Stub to call the system default and update the image on the picoLCD */
-static void picolcd_fb_copyarea(struct fb_info *info,
-		const struct fb_copyarea *area)
-{
-	if (!info->par)
-		return;
-	sys_copyarea(info, area);
-
-	schedule_delayed_work(&info->deferred_work, 0);
-}
-
-/* Stub to call the system default and update the image on the picoLCD */
-static void picolcd_fb_imageblit(struct fb_info *info, const struct fb_image *image)
-{
-	if (!info->par)
-		return;
-	sys_imageblit(info, image);
-
-	schedule_delayed_work(&info->deferred_work, 0);
-}
-
-/*
- * this is the slow path from userspace. they can seek and write to
- * the fb. it's inefficient to do anything less than a full screen draw
- */
-static ssize_t picolcd_fb_write(struct fb_info *info, const char __user *buf,
-		size_t count, loff_t *ppos)
-{
-	ssize_t ret;
-	if (!info->par)
-		return -ENODEV;
-	ret = fb_sys_write(info, buf, count, ppos);
-	if (ret >= 0)
-		schedule_delayed_work(&info->deferred_work, 0);
-	return ret;
-}
-
 static int picolcd_fb_blank(int blank, struct fb_info *info)
 {
 	/* We let fb notification do this for us via lcd/backlight device */
@@ -417,18 +369,31 @@ static int picolcd_set_par(struct fb_info *info)
 	return 0;
 }
 
+static void picolcdfb_ops_damage_range(struct fb_info *info, off_t off, size_t len)
+{
+	if (!info->par)
+		return;
+	schedule_delayed_work(&info->deferred_work, 0);
+}
+
+static void picolcdfb_ops_damage_area(struct fb_info *info, u32 x, u32 y, u32 width, u32 height)
+{
+	if (!info->par)
+		return;
+	schedule_delayed_work(&info->deferred_work, 0);
+}
+
+FB_GEN_DEFAULT_DEFERRED_SYSMEM_OPS(picolcdfb_ops,
+				   picolcdfb_ops_damage_range,
+				   picolcdfb_ops_damage_area)
+
 static const struct fb_ops picolcdfb_ops = {
 	.owner        = THIS_MODULE,
+	FB_DEFAULT_DEFERRED_OPS(picolcdfb_ops),
 	.fb_destroy   = picolcd_fb_destroy,
-	.fb_read      = fb_sys_read,
-	.fb_write     = picolcd_fb_write,
 	.fb_blank     = picolcd_fb_blank,
-	.fb_fillrect  = picolcd_fb_fillrect,
-	.fb_copyarea  = picolcd_fb_copyarea,
-	.fb_imageblit = picolcd_fb_imageblit,
 	.fb_check_var = picolcd_fb_check_var,
 	.fb_set_par   = picolcd_set_par,
-	.fb_mmap      = fb_deferred_io_mmap,
 };
 
 
diff --git a/drivers/hid/hid-prodikeys.c b/drivers/hid/hid-prodikeys.c
index e4e9471d0f..c16d2ba6ea 100644
--- a/drivers/hid/hid-prodikeys.c
+++ b/drivers/hid/hid-prodikeys.c
@@ -639,9 +639,9 @@ static int pcmidi_snd_initialise(struct pcmidi_snd *pm)
 		goto fail;
 	}
 
-	strncpy(card->driver, shortname, sizeof(card->driver));
-	strncpy(card->shortname, shortname, sizeof(card->shortname));
-	strncpy(card->longname, longname, sizeof(card->longname));
+	strscpy(card->driver, shortname, sizeof(card->driver));
+	strscpy(card->shortname, shortname, sizeof(card->shortname));
+	strscpy(card->longname, longname, sizeof(card->longname));
 
 	/* Set up rawmidi */
 	err = snd_rawmidi_new(card, card->shortname, 0,
@@ -652,7 +652,7 @@ static int pcmidi_snd_initialise(struct pcmidi_snd *pm)
 		goto fail;
 	}
 	pm->rwmidi = rwmidi;
-	strncpy(rwmidi->name, card->shortname, sizeof(rwmidi->name));
+	strscpy(rwmidi->name, card->shortname, sizeof(rwmidi->name));
 	rwmidi->info_flags = SNDRV_RAWMIDI_INFO_INPUT;
 	rwmidi->private_data = pm;
 
diff --git a/drivers/hid/hid-rmi.c b/drivers/hid/hid-rmi.c
index 84e7ba5314..d4af17fdba 100644
--- a/drivers/hid/hid-rmi.c
+++ b/drivers/hid/hid-rmi.c
@@ -436,7 +436,6 @@ static void rmi_report(struct hid_device *hid, struct hid_report *report)
 		input_sync(field->hidinput->input);
 }
 
-#ifdef CONFIG_PM
 static int rmi_suspend(struct hid_device *hdev, pm_message_t message)
 {
 	struct rmi_data *data = hid_get_drvdata(hdev);
@@ -483,7 +482,6 @@ out:
 	hid_hw_close(hdev);
 	return ret;
 }
-#endif /* CONFIG_PM */
 
 static int rmi_hid_reset(struct rmi_transport_dev *xport, u16 reset_addr)
 {
@@ -774,11 +772,9 @@ static struct hid_driver rmi_driver = {
 	.report			= rmi_report,
 	.input_mapping		= rmi_input_mapping,
 	.input_configured	= rmi_input_configured,
-#ifdef CONFIG_PM
-	.suspend		= rmi_suspend,
-	.resume			= rmi_post_resume,
-	.reset_resume		= rmi_post_resume,
-#endif
+	.suspend		= pm_ptr(rmi_suspend),
+	.resume			= pm_ptr(rmi_post_resume),
+	.reset_resume		= pm_ptr(rmi_post_resume),
 };
 
 module_hid_driver(rmi_driver);
diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
index 13c8dd8cd3..2bc762d31a 100644
--- a/drivers/hid/hidraw.c
+++ b/drivers/hid/hidraw.c
@@ -357,8 +357,11 @@ static int hidraw_release(struct inode * inode, struct file * file)
 	down_write(&minors_rwsem);
 
 	spin_lock_irqsave(&hidraw_table[minor]->list_lock, flags);
-	for (int i = list->tail; i < list->head; i++)
-		kfree(list->buffer[i].value);
+	while (list->tail != list->head) {
+		kfree(list->buffer[list->tail].value);
+		list->buffer[list->tail].value = NULL;
+		list->tail = (list->tail + 1) & (HIDRAW_BUFFER_SIZE - 1);
+	}
 	list_del(&list->node);
 	spin_unlock_irqrestore(&hidraw_table[minor]->list_lock, flags);
 	kfree(list);
diff --git a/drivers/hid/i2c-hid/i2c-hid-of.c b/drivers/hid/i2c-hid/i2c-hid-of.c
index c4e1fa0273..8be4d576da 100644
--- a/drivers/hid/i2c-hid/i2c-hid-of.c
+++ b/drivers/hid/i2c-hid/i2c-hid-of.c
@@ -87,6 +87,7 @@ static int i2c_hid_of_probe(struct i2c_client *client)
 	if (!ihid_of)
 		return -ENOMEM;
 
+	ihid_of->client = client;
 	ihid_of->ops.power_up = i2c_hid_of_power_up;
 	ihid_of->ops.power_down = i2c_hid_of_power_down;
 
diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c
index 257dd73e37..a90ed2ceae 100644
--- a/drivers/hid/usbhid/hid-core.c
+++ b/drivers/hid/usbhid/hid-core.c
@@ -1562,7 +1562,6 @@ static int hid_post_reset(struct usb_interface *intf)
 	return 0;
 }
 
-#ifdef CONFIG_PM
 static int hid_resume_common(struct hid_device *hid, bool driver_suspended)
 {
 	int status = 0;
@@ -1654,8 +1653,6 @@ static int hid_reset_resume(struct usb_interface *intf)
 	return status;
 }
 
-#endif /* CONFIG_PM */
-
 static const struct usb_device_id hid_usb_ids[] = {
 	{ .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS,
 		.bInterfaceClass = USB_INTERFACE_CLASS_HID },
@@ -1668,11 +1665,9 @@ static struct usb_driver hid_driver = {
 	.name =		"usbhid",
 	.probe =	usbhid_probe,
 	.disconnect =	usbhid_disconnect,
-#ifdef CONFIG_PM
-	.suspend =	hid_suspend,
-	.resume =	hid_resume,
-	.reset_resume =	hid_reset_resume,
-#endif
+	.suspend =	pm_ptr(hid_suspend),
+	.resume =	pm_ptr(hid_resume),
+	.reset_resume =	pm_ptr(hid_reset_resume),
 	.pre_reset =	hid_pre_reset,
 	.post_reset =	hid_post_reset,
 	.id_table =	hid_usb_ids,
diff --git a/drivers/hid/wacom_sys.c b/drivers/hid/wacom_sys.c
index 3f704b8072..7659c98d94 100644
--- a/drivers/hid/wacom_sys.c
+++ b/drivers/hid/wacom_sys.c
@@ -2080,7 +2080,7 @@ static int wacom_allocate_inputs(struct wacom *wacom)
 	return 0;
 }
 
-static int wacom_register_inputs(struct wacom *wacom)
+static int wacom_setup_inputs(struct wacom *wacom)
 {
 	struct input_dev *pen_input_dev, *touch_input_dev, *pad_input_dev;
 	struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
@@ -2099,10 +2099,6 @@ static int wacom_register_inputs(struct wacom *wacom)
 		input_free_device(pen_input_dev);
 		wacom_wac->pen_input = NULL;
 		pen_input_dev = NULL;
-	} else {
-		error = input_register_device(pen_input_dev);
-		if (error)
-			goto fail;
 	}
 
 	error = wacom_setup_touch_input_capabilities(touch_input_dev, wacom_wac);
@@ -2111,10 +2107,6 @@ static int wacom_register_inputs(struct wacom *wacom)
 		input_free_device(touch_input_dev);
 		wacom_wac->touch_input = NULL;
 		touch_input_dev = NULL;
-	} else {
-		error = input_register_device(touch_input_dev);
-		if (error)
-			goto fail;
 	}
 
 	error = wacom_setup_pad_input_capabilities(pad_input_dev, wacom_wac);
@@ -2123,7 +2115,34 @@ static int wacom_register_inputs(struct wacom *wacom)
 		input_free_device(pad_input_dev);
 		wacom_wac->pad_input = NULL;
 		pad_input_dev = NULL;
-	} else {
+	}
+
+	return 0;
+}
+
+static int wacom_register_inputs(struct wacom *wacom)
+{
+	struct input_dev *pen_input_dev, *touch_input_dev, *pad_input_dev;
+	struct wacom_wac *wacom_wac = &(wacom->wacom_wac);
+	int error = 0;
+
+	pen_input_dev = wacom_wac->pen_input;
+	touch_input_dev = wacom_wac->touch_input;
+	pad_input_dev = wacom_wac->pad_input;
+
+	if (pen_input_dev) {
+		error = input_register_device(pen_input_dev);
+		if (error)
+			goto fail;
+	}
+
+	if (touch_input_dev) {
+		error = input_register_device(touch_input_dev);
+		if (error)
+			goto fail;
+	}
+
+	if (pad_input_dev) {
 		error = input_register_device(pad_input_dev);
 		if (error)
 			goto fail;
@@ -2376,6 +2395,20 @@ static int wacom_parse_and_register(struct wacom *wacom, bool wireless)
 	if (error)
 		goto fail;
 
+	error = wacom_setup_inputs(wacom);
+	if (error)
+		goto fail;
+
+	if (features->type == HID_GENERIC)
+		connect_mask |= HID_CONNECT_DRIVER;
+
+	/* Regular HID work starts now */
+	error = hid_hw_start(hdev, connect_mask);
+	if (error) {
+		hid_err(hdev, "hw start failed\n");
+		goto fail;
+	}
+
 	error = wacom_register_inputs(wacom);
 	if (error)
 		goto fail;
@@ -2390,16 +2423,6 @@ static int wacom_parse_and_register(struct wacom *wacom, bool wireless)
 			goto fail;
 	}
 
-	if (features->type == HID_GENERIC)
-		connect_mask |= HID_CONNECT_DRIVER;
-
-	/* Regular HID work starts now */
-	error = hid_hw_start(hdev, connect_mask);
-	if (error) {
-		hid_err(hdev, "hw start failed\n");
-		goto fail;
-	}
-
 	if (!wireless) {
 		/* Note that if query fails it is not a hard failure */
 		wacom_query_tablet_data(wacom);
diff --git a/drivers/hid/wacom_wac.c b/drivers/hid/wacom_wac.c
index 8289ce7637..002cbaa16b 100644
--- a/drivers/hid/wacom_wac.c
+++ b/drivers/hid/wacom_wac.c
@@ -2574,7 +2574,14 @@ static void wacom_wac_pen_report(struct hid_device *hdev,
 				wacom_wac->hid_data.tipswitch);
 		input_report_key(input, wacom_wac->tool[0], sense);
 		if (wacom_wac->serial[0]) {
-			input_event(input, EV_MSC, MSC_SERIAL, wacom_wac->serial[0]);
+			/*
+			 * xf86-input-wacom does not accept a serial number
+			 * of '0'. Report the low 32 bits if possible, but
+			 * if they are zero, report the upper ones instead.
+			 */
+			__u32 serial_lo = wacom_wac->serial[0] & 0xFFFFFFFFu;
+			__u32 serial_hi = wacom_wac->serial[0] >> 32;
+			input_event(input, EV_MSC, MSC_SERIAL, (int)(serial_lo ? serial_lo : serial_hi));
 			input_report_abs(input, ABS_MISC, sense ? id : 0);
 		}