Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

Pull input updates from Dmitry Torokhov:

 - newer systems with Elan touchpads will be switched over to SMBus

 - HP Spectre X360 will be using SMbus/RMI4

 - checks for invalid USB descriptors in kbtab and iforce

 - build fixes for applespi driver (misconfigs)

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: iforce - add sanity checks
  Input: applespi - use struct_size() helper
  Input: kbtab - sanity check for endpoint type
  Input: usbtouchscreen - initialize PM mutex before using it
  Input: applespi - add dependency on LEDS_CLASS
  Input: synaptics - enable RMI mode for HP Spectre X360
  Input: elantech - annotate fall-through case in elantech_use_host_notify()
  Input: elantech - enable SMBus on new (2018+) systems
  Input: applespi - fix trivial typo in struct description
  Input: applespi - select CRC16 module
  Input: applespi - fix warnings detected by sparse

7 files changed, 56 insertions, 44 deletions

diff --git a/drivers/input/joystick/iforce/iforce-usb.c b/drivers/input/joystick/iforce/iforce-usb.c
index 29abfeeef9a5..6c554c11a7ac 100644
--- a/drivers/input/joystick/iforce/iforce-usb.c
+++ b/drivers/input/joystick/iforce/iforce-usb.c
@@ -201,7 +201,12 @@ static int iforce_usb_probe(struct usb_interface *intf,
 		return -ENODEV;
 
 	epirq = &interface->endpoint[0].desc;
+	if (!usb_endpoint_is_int_in(epirq))
+		return -ENODEV;
+
 	epout = &interface->endpoint[1].desc;
+	if (!usb_endpoint_is_int_out(epout))
+		return -ENODEV;
 
 	iforce_usb = kzalloc(sizeof(*iforce_usb), GFP_KERNEL);
 	if (!iforce_usb)
diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
index 8e9c3ea9d5e7..90e8a7f2f07c 100644
--- a/drivers/input/keyboard/Kconfig
+++ b/drivers/input/keyboard/Kconfig
@@ -76,6 +76,8 @@ config KEYBOARD_APPLESPI
 	depends on ACPI && EFI
 	depends on SPI
 	depends on X86 || COMPILE_TEST
+	depends on LEDS_CLASS
+	select CRC16
 	help
 	  Say Y here if you are running Linux on any Apple MacBook8,1 or later,
 	  or any MacBookPro13,* or MacBookPro14,*.
diff --git a/drivers/input/keyboard/applespi.c b/drivers/input/keyboard/applespi.c
index 548737e7aeda..584289b67fb3 100644
--- a/drivers/input/keyboard/applespi.c
+++ b/drivers/input/keyboard/applespi.c
@@ -134,10 +134,10 @@ struct keyboard_protocol {
  * struct tp_finger - single trackpad finger structure, le16-aligned
  *
  * @origin:		zero when switching track finger
- * @abs_x:		absolute x coodinate
- * @abs_y:		absolute y coodinate
- * @rel_x:		relative x coodinate
- * @rel_y:		relative y coodinate
+ * @abs_x:		absolute x coordinate
+ * @abs_y:		absolute y coordinate
+ * @rel_x:		relative x coordinate
+ * @rel_y:		relative y coordinate
  * @tool_major:		tool area, major axis
  * @tool_minor:		tool area, minor axis
  * @orientation:	16384 when point, else 15 bit angle
@@ -944,10 +944,14 @@ static inline int le16_to_int(__le16 x)
 static void applespi_debug_update_dimensions(struct applespi_data *applespi,
 					     const struct tp_finger *f)
 {
-	applespi->tp_dim_min_x = min_t(int, applespi->tp_dim_min_x, f->abs_x);
-	applespi->tp_dim_max_x = max_t(int, applespi->tp_dim_max_x, f->abs_x);
-	applespi->tp_dim_min_y = min_t(int, applespi->tp_dim_min_y, f->abs_y);
-	applespi->tp_dim_max_y = max_t(int, applespi->tp_dim_max_y, f->abs_y);
+	applespi->tp_dim_min_x = min(applespi->tp_dim_min_x,
+				     le16_to_int(f->abs_x));
+	applespi->tp_dim_max_x = max(applespi->tp_dim_max_x,
+				     le16_to_int(f->abs_x));
+	applespi->tp_dim_min_y = min(applespi->tp_dim_min_y,
+				     le16_to_int(f->abs_y));
+	applespi->tp_dim_max_y = max(applespi->tp_dim_max_y,
+				     le16_to_int(f->abs_y));
 }
 
 static int applespi_tp_dim_open(struct inode *inode, struct file *file)
@@ -1490,8 +1494,7 @@ static void applespi_got_data(struct applespi_data *applespi)
 		size_t tp_len;
 
 		tp = &message->touchpad;
-		tp_len = sizeof(*tp) +
-			 tp->number_of_fingers * sizeof(tp->fingers[0]);
+		tp_len = struct_size(tp, fingers, tp->number_of_fingers);
 
 		if (le16_to_cpu(message->length) + 2 != tp_len) {
 			dev_warn_ratelimited(&applespi->spi->dev,
@@ -1611,8 +1614,8 @@ static void applespi_save_bl_level(struct applespi_data *applespi,
 	efi_attr = EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS |
 		   EFI_VARIABLE_RUNTIME_ACCESS;
 
-	sts = efivar_entry_set_safe(EFI_BL_LEVEL_NAME, efi_guid, efi_attr, true,
-				    efi_data_len, &efi_data);
+	sts = efivar_entry_set_safe((efi_char16_t *)EFI_BL_LEVEL_NAME, efi_guid,
+				    efi_attr, true, efi_data_len, &efi_data);
 	if (sts)
 		dev_warn(&applespi->spi->dev,
 			 "Error saving backlight level to EFI vars: %d\n", sts);
@@ -1953,7 +1956,7 @@ static const struct acpi_device_id applespi_acpi_match[] = {
 };
 MODULE_DEVICE_TABLE(acpi, applespi_acpi_match);
 
-const struct dev_pm_ops applespi_pm_ops = {
+static const struct dev_pm_ops applespi_pm_ops = {
 	SET_SYSTEM_SLEEP_PM_OPS(applespi_suspend, applespi_resume)
 	.poweroff_late	= applespi_poweroff_late,
 };
diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c
index 2d8434b7b623..04fe43440a3c 100644
--- a/drivers/input/mouse/elantech.c
+++ b/drivers/input/mouse/elantech.c
@@ -1827,6 +1827,31 @@ static int elantech_create_smbus(struct psmouse *psmouse,
 				  leave_breadcrumbs);
 }
 
+static bool elantech_use_host_notify(struct psmouse *psmouse,
+				     struct elantech_device_info *info)
+{
+	if (ETP_NEW_IC_SMBUS_HOST_NOTIFY(info->fw_version))
+		return true;
+
+	switch (info->bus) {
+	case ETP_BUS_PS2_ONLY:
+		/* expected case */
+		break;
+	case ETP_BUS_SMB_HST_NTFY_ONLY:
+	case ETP_BUS_PS2_SMB_HST_NTFY:
+		/* SMbus implementation is stable since 2018 */
+		if (dmi_get_bios_year() >= 2018)
+			return true;
+		/* fall through */
+	default:
+		psmouse_dbg(psmouse,
+			    "Ignoring SMBus bus provider %d\n", info->bus);
+		break;
+	}
+
+	return false;
+}
+
 /**
  * elantech_setup_smbus - called once the PS/2 devices are enumerated
  * and decides to instantiate a SMBus InterTouch device.
@@ -1846,7 +1871,7 @@ static int elantech_setup_smbus(struct psmouse *psmouse,
 		 * i2c_blacklist_pnp_ids.
 		 * Old ICs are up to the user to decide.
 		 */
-		if (!ETP_NEW_IC_SMBUS_HOST_NOTIFY(info->fw_version) ||
+		if (!elantech_use_host_notify(psmouse, info) ||
 		    psmouse_matches_pnp_id(psmouse, i2c_blacklist_pnp_ids))
 			return -ENXIO;
 	}
@@ -1866,34 +1891,6 @@ static int elantech_setup_smbus(struct psmouse *psmouse,
 	return 0;
 }
 
-static bool elantech_use_host_notify(struct psmouse *psmouse,
-				     struct elantech_device_info *info)
-{
-	if (ETP_NEW_IC_SMBUS_HOST_NOTIFY(info->fw_version))
-		return true;
-
-	switch (info->bus) {
-	case ETP_BUS_PS2_ONLY:
-		/* expected case */
-		break;
-	case ETP_BUS_SMB_ALERT_ONLY:
-		/* fall-through  */
-	case ETP_BUS_PS2_SMB_ALERT:
-		psmouse_dbg(psmouse, "Ignoring SMBus provider through alert protocol.\n");
-		break;
-	case ETP_BUS_SMB_HST_NTFY_ONLY:
-		/* fall-through  */
-	case ETP_BUS_PS2_SMB_HST_NTFY:
-		return true;
-	default:
-		psmouse_dbg(psmouse,
-			    "Ignoring SMBus bus provider %d.\n",
-			    info->bus);
-	}
-
-	return false;
-}
-
 int elantech_init_smbus(struct psmouse *psmouse)
 {
 	struct elantech_device_info info;
diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index b1956ed4c0dd..46bbe99d6511 100644
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -182,6 +182,7 @@ static const char * const smbus_pnp_ids[] = {
 	"LEN2055", /* E580 */
 	"SYN3052", /* HP EliteBook 840 G4 */
 	"SYN3221", /* HP 15-ay000 */
+	"SYN323d", /* HP Spectre X360 13-w013dx */
 	NULL
 };
 
diff --git a/drivers/input/tablet/kbtab.c b/drivers/input/tablet/kbtab.c
index 04b85571f41e..aa577898e952 100644
--- a/drivers/input/tablet/kbtab.c
+++ b/drivers/input/tablet/kbtab.c
@@ -117,6 +117,10 @@ static int kbtab_probe(struct usb_interface *intf, const struct usb_device_id *i
 	if (intf->cur_altsetting->desc.bNumEndpoints < 1)
 		return -ENODEV;
 
+	endpoint = &intf->cur_altsetting->endpoint[0].desc;
+	if (!usb_endpoint_is_int_in(endpoint))
+		return -ENODEV;
+
 	kbtab = kzalloc(sizeof(struct kbtab), GFP_KERNEL);
 	input_dev = input_allocate_device();
 	if (!kbtab || !input_dev)
@@ -155,8 +159,6 @@ static int kbtab_probe(struct usb_interface *intf, const struct usb_device_id *i
 	input_set_abs_params(input_dev, ABS_Y, 0, 0x1750, 4, 0);
 	input_set_abs_params(input_dev, ABS_PRESSURE, 0, 0xff, 0, 0);
 
-	endpoint = &intf->cur_altsetting->endpoint[0].desc;
-
 	usb_fill_int_urb(kbtab->irq, dev,
 			 usb_rcvintpipe(dev, endpoint->bEndpointAddress),
 			 kbtab->data, 8,
diff --git a/drivers/input/touchscreen/usbtouchscreen.c b/drivers/input/touchscreen/usbtouchscreen.c
index a2cec6cacf57..16d70201de4a 100644
--- a/drivers/input/touchscreen/usbtouchscreen.c
+++ b/drivers/input/touchscreen/usbtouchscreen.c
@@ -1659,6 +1659,8 @@ static int usbtouch_probe(struct usb_interface *intf,
 	if (!usbtouch || !input_dev)
 		goto out_free;
 
+	mutex_init(&usbtouch->pm_mutex);
+
 	type = &usbtouch_dev_info[id->driver_info];
 	usbtouch->type = type;
 	if (!type->process_pkt)