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

Pull input subsystem updates from Dmitry Torokhov:

 - updated support for Synaptics RMI4 devices, including support for
   SMBus controllers, firmware update support, sensor tuning, and PS/2
   guest support

 - ALPS driver now supports tracksticks on SS5 controllers

 - i8042 now uses chassis info to skip selftest on Asus laptops as list
   of individual models became too unwieldy

 - miscellaneous fixes to other drivers

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (67 commits)
  Input: imx6ul_tsc - generalize the averaging property
  Input: drv260x - use generic device properties
  Input: drv260x - use temporary for &client->dev
  Input: drv260x - fix input device's parent assignment
  Input: synaptics-rmi4 - add support for F34 V7 bootloader
  Input: drv260x - fix initializing overdrive voltage
  Input: ALPS - fix protcol -> protocol
  Input: i8042 - comment #else/#endif of CONFIG_PNP
  Input: lpc32xx-keys - fix invalid error handling of a requested irq
  Input: synaptics-rmi4 - fix debug for sensor clip
  Input: synaptics-rmi4 - store the attn data in the driver
  Input: synaptics-rmi4 - allow to add attention data
  Input: synaptics-rmi4 - f03 - grab data passed by transport device
  Input: synaptics-rmi4 - add support for F03
  Input: imx6ul_tsc - convert int to u32
  Input: imx6ul_tsc - add mask when set REG_ADC_CFG
  Input: synaptics-rmi4 - have only one struct platform data
  Input: synaptics-rmi4 - remove EXPORT_SYMBOL_GPL for internal functions
  Input: synaptics-rmi4 - remove mutex calls while updating the firmware
  Input: drv2667 - fix misuse of regmap_update_bits
  ...

5 files changed, 192 insertions, 151 deletions

diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c
index 29093657f2ef..582462d0af75 100644
--- a/drivers/input/keyboard/gpio_keys.c
+++ b/drivers/input/keyboard/gpio_keys.c
@@ -26,15 +26,15 @@
 #include <linux/gpio_keys.h>
 #include <linux/workqueue.h>
 #include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/of.h>
-#include <linux/of_platform.h>
-#include <linux/of_gpio.h>
 #include <linux/of_irq.h>
 #include <linux/spinlock.h>
 
 struct gpio_button_data {
 	const struct gpio_keys_button *button;
 	struct input_dev *input;
+	struct gpio_desc *gpiod;
 
 	struct timer_list release_timer;
 	unsigned int release_delay;	/* in msecs, for IRQ-only buttons */
@@ -140,7 +140,7 @@ static void gpio_keys_disable_button(struct gpio_button_data *bdata)
 		 */
 		disable_irq(bdata->irq);
 
-		if (gpio_is_valid(bdata->button->gpio))
+		if (bdata->gpiod)
 			cancel_delayed_work_sync(&bdata->work);
 		else
 			del_timer_sync(&bdata->release_timer);
@@ -358,19 +358,20 @@ static void gpio_keys_gpio_report_event(struct gpio_button_data *bdata)
 	const struct gpio_keys_button *button = bdata->button;
 	struct input_dev *input = bdata->input;
 	unsigned int type = button->type ?: EV_KEY;
-	int state = gpio_get_value_cansleep(button->gpio);
+	int state;
 
+	state = gpiod_get_value_cansleep(bdata->gpiod);
 	if (state < 0) {
-		dev_err(input->dev.parent, "failed to get gpio state\n");
+		dev_err(input->dev.parent,
+			"failed to get gpio state: %d\n", state);
 		return;
 	}
 
-	state = (state ? 1 : 0) ^ button->active_low;
 	if (type == EV_ABS) {
 		if (state)
 			input_event(input, type, button->code, button->value);
 	} else {
-		input_event(input, type, button->code, !!state);
+		input_event(input, type, button->code, state);
 	}
 	input_sync(input);
 }
@@ -456,7 +457,7 @@ static void gpio_keys_quiesce_key(void *data)
 {
 	struct gpio_button_data *bdata = data;
 
-	if (gpio_is_valid(bdata->button->gpio))
+	if (bdata->gpiod)
 		cancel_delayed_work_sync(&bdata->work);
 	else
 		del_timer_sync(&bdata->release_timer);
@@ -465,7 +466,8 @@ static void gpio_keys_quiesce_key(void *data)
 static int gpio_keys_setup_key(struct platform_device *pdev,
 				struct input_dev *input,
 				struct gpio_button_data *bdata,
-				const struct gpio_keys_button *button)
+				const struct gpio_keys_button *button,
+				struct fwnode_handle *child)
 {
 	const char *desc = button->desc ? button->desc : "gpio_keys";
 	struct device *dev = &pdev->dev;
@@ -478,18 +480,56 @@ static int gpio_keys_setup_key(struct platform_device *pdev,
 	bdata->button = button;
 	spin_lock_init(&bdata->lock);
 
-	if (gpio_is_valid(button->gpio)) {
+	if (child) {
+		bdata->gpiod = devm_get_gpiod_from_child(dev, NULL, child);
+		if (IS_ERR(bdata->gpiod)) {
+			error = PTR_ERR(bdata->gpiod);
+			if (error == -ENOENT) {
+				/*
+				 * GPIO is optional, we may be dealing with
+				 * purely interrupt-driven setup.
+				 */
+				bdata->gpiod = NULL;
+			} else {
+				if (error != -EPROBE_DEFER)
+					dev_err(dev, "failed to get gpio: %d\n",
+						error);
+				return error;
+			}
+		} else {
+			error = gpiod_direction_input(bdata->gpiod);
+			if (error) {
+				dev_err(dev, "Failed to configure GPIO %d as input: %d\n",
+					desc_to_gpio(bdata->gpiod), error);
+				return error;
+			}
+		}
+	} else if (gpio_is_valid(button->gpio)) {
+		/*
+		 * Legacy GPIO number, so request the GPIO here and
+		 * convert it to descriptor.
+		 */
+		unsigned flags = GPIOF_IN;
+
+		if (button->active_low)
+			flags |= GPIOF_ACTIVE_LOW;
 
-		error = devm_gpio_request_one(&pdev->dev, button->gpio,
-					      GPIOF_IN, desc);
+		error = devm_gpio_request_one(&pdev->dev, button->gpio, flags,
+					      desc);
 		if (error < 0) {
 			dev_err(dev, "Failed to request GPIO %d, error %d\n",
 				button->gpio, error);
 			return error;
 		}
 
+		bdata->gpiod = gpio_to_desc(button->gpio);
+		if (!bdata->gpiod)
+			return -EINVAL;
+	}
+
+	if (bdata->gpiod) {
 		if (button->debounce_interval) {
-			error = gpio_set_debounce(button->gpio,
+			error = gpiod_set_debounce(bdata->gpiod,
 					button->debounce_interval * 1000);
 			/* use timer if gpiolib doesn't provide debounce */
 			if (error < 0)
@@ -500,7 +540,7 @@ static int gpio_keys_setup_key(struct platform_device *pdev,
 		if (button->irq) {
 			bdata->irq = button->irq;
 		} else {
-			irq = gpio_to_irq(button->gpio);
+			irq = gpiod_to_irq(bdata->gpiod);
 			if (irq < 0) {
 				error = irq;
 				dev_err(dev,
@@ -518,9 +558,10 @@ static int gpio_keys_setup_key(struct platform_device *pdev,
 
 	} else {
 		if (!button->irq) {
-			dev_err(dev, "No IRQ specified\n");
+			dev_err(dev, "Found button without gpio or irq\n");
 			return -EINVAL;
 		}
+
 		bdata->irq = button->irq;
 
 		if (button->type && button->type != EV_KEY) {
@@ -575,7 +616,7 @@ static void gpio_keys_report_state(struct gpio_keys_drvdata *ddata)
 
 	for (i = 0; i < ddata->pdata->nbuttons; i++) {
 		struct gpio_button_data *bdata = &ddata->data[i];
-		if (gpio_is_valid(bdata->button->gpio))
+		if (bdata->gpiod)
 			gpio_keys_gpio_report_event(bdata);
 	}
 	input_sync(input);
@@ -612,25 +653,18 @@ static void gpio_keys_close(struct input_dev *input)
  * Handlers for alternative sources of platform_data
  */
 
-#ifdef CONFIG_OF
 /*
- * Translate OpenFirmware node properties into platform_data
+ * Translate properties into platform_data
  */
 static struct gpio_keys_platform_data *
 gpio_keys_get_devtree_pdata(struct device *dev)
 {
-	struct device_node *node, *pp;
 	struct gpio_keys_platform_data *pdata;
 	struct gpio_keys_button *button;
-	int error;
+	struct fwnode_handle *child;
 	int nbuttons;
-	int i;
 
-	node = dev->of_node;
-	if (!node)
-		return ERR_PTR(-ENODEV);
-
-	nbuttons = of_get_available_child_count(node);
+	nbuttons = device_get_child_node_count(dev);
 	if (nbuttons == 0)
 		return ERR_PTR(-ENODEV);
 
@@ -640,64 +674,47 @@ gpio_keys_get_devtree_pdata(struct device *dev)
 	if (!pdata)
 		return ERR_PTR(-ENOMEM);
 
-	pdata->buttons = (struct gpio_keys_button *)(pdata + 1);
-	pdata->nbuttons = nbuttons;
-
-	pdata->rep = !!of_get_property(node, "autorepeat", NULL);
-
-	of_property_read_string(node, "label", &pdata->name);
-
-	i = 0;
-	for_each_available_child_of_node(node, pp) {
-		enum of_gpio_flags flags;
+	button = (struct gpio_keys_button *)(pdata + 1);
 
-		button = &pdata->buttons[i++];
+	pdata->buttons = button;
+	pdata->nbuttons = nbuttons;
 
-		button->gpio = of_get_gpio_flags(pp, 0, &flags);
-		if (button->gpio < 0) {
-			error = button->gpio;
-			if (error != -ENOENT) {
-				if (error != -EPROBE_DEFER)
-					dev_err(dev,
-						"Failed to get gpio flags, error: %d\n",
-						error);
-				return ERR_PTR(error);
-			}
-		} else {
-			button->active_low = flags & OF_GPIO_ACTIVE_LOW;
-		}
+	pdata->rep = device_property_read_bool(dev, "autorepeat");
 
-		button->irq = irq_of_parse_and_map(pp, 0);
+	device_property_read_string(dev, "label", &pdata->name);
 
-		if (!gpio_is_valid(button->gpio) && !button->irq) {
-			dev_err(dev, "Found button without gpios or irqs\n");
-			return ERR_PTR(-EINVAL);
-		}
+	device_for_each_child_node(dev, child) {
+		if (is_of_node(child))
+			button->irq =
+				irq_of_parse_and_map(to_of_node(child), 0);
 
-		if (of_property_read_u32(pp, "linux,code", &button->code)) {
-			dev_err(dev, "Button without keycode: 0x%x\n",
-				button->gpio);
+		if (fwnode_property_read_u32(child, "linux,code",
+					     &button->code)) {
+			dev_err(dev, "Button without keycode\n");
+			fwnode_handle_put(child);
 			return ERR_PTR(-EINVAL);
 		}
 
-		button->desc = of_get_property(pp, "label", NULL);
+		fwnode_property_read_string(child, "label", &button->desc);
 
-		if (of_property_read_u32(pp, "linux,input-type", &button->type))
+		if (fwnode_property_read_u32(child, "linux,input-type",
+					     &button->type))
 			button->type = EV_KEY;
 
-		button->wakeup = of_property_read_bool(pp, "wakeup-source") ||
-				 /* legacy name */
-				 of_property_read_bool(pp, "gpio-key,wakeup");
+		button->wakeup =
+			fwnode_property_read_bool(child, "wakeup-source") ||
+			/* legacy name */
+			fwnode_property_read_bool(child, "gpio-key,wakeup");
 
-		button->can_disable = !!of_get_property(pp, "linux,can-disable", NULL);
+		button->can_disable =
+			fwnode_property_read_bool(child, "linux,can-disable");
 
-		if (of_property_read_u32(pp, "debounce-interval",
+		if (fwnode_property_read_u32(child, "debounce-interval",
 					 &button->debounce_interval))
 			button->debounce_interval = 5;
-	}
 
-	if (pdata->nbuttons == 0)
-		return ERR_PTR(-EINVAL);
+		button++;
+	}
 
 	return pdata;
 }
@@ -708,20 +725,11 @@ static const struct of_device_id gpio_keys_of_match[] = {
 };
 MODULE_DEVICE_TABLE(of, gpio_keys_of_match);
 
-#else
-
-static inline struct gpio_keys_platform_data *
-gpio_keys_get_devtree_pdata(struct device *dev)
-{
-	return ERR_PTR(-ENODEV);
-}
-
-#endif
-
 static int gpio_keys_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	const struct gpio_keys_platform_data *pdata = dev_get_platdata(dev);
+	struct fwnode_handle *child = NULL;
 	struct gpio_keys_drvdata *ddata;
 	struct input_dev *input;
 	size_t size;
@@ -774,14 +782,28 @@ static int gpio_keys_probe(struct platform_device *pdev)
 		const struct gpio_keys_button *button = &pdata->buttons[i];
 		struct gpio_button_data *bdata = &ddata->data[i];
 
-		error = gpio_keys_setup_key(pdev, input, bdata, button);
-		if (error)
+		if (!dev_get_platdata(dev)) {
+			child = device_get_next_child_node(&pdev->dev, child);
+			if (!child) {
+				dev_err(&pdev->dev,
+					"missing child device node for entry %d\n",
+					i);
+				return -EINVAL;
+			}
+		}
+
+		error = gpio_keys_setup_key(pdev, input, bdata, button, child);
+		if (error) {
+			fwnode_handle_put(child);
 			return error;
+		}
 
 		if (button->wakeup)
 			wakeup = 1;
 	}
 
+	fwnode_handle_put(child);
+
 	error = sysfs_create_group(&pdev->dev.kobj, &gpio_keys_attr_group);
 	if (error) {
 		dev_err(dev, "Unable to export keys/switches, error: %d\n",
@@ -814,8 +836,7 @@ static int gpio_keys_remove(struct platform_device *pdev)
 	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
-static int gpio_keys_suspend(struct device *dev)
+static int __maybe_unused gpio_keys_suspend(struct device *dev)
 {
 	struct gpio_keys_drvdata *ddata = dev_get_drvdata(dev);
 	struct input_dev *input = ddata->input;
@@ -837,7 +858,7 @@ static int gpio_keys_suspend(struct device *dev)
 	return 0;
 }
 
-static int gpio_keys_resume(struct device *dev)
+static int __maybe_unused gpio_keys_resume(struct device *dev)
 {
 	struct gpio_keys_drvdata *ddata = dev_get_drvdata(dev);
 	struct input_dev *input = ddata->input;
@@ -863,7 +884,6 @@ static int gpio_keys_resume(struct device *dev)
 	gpio_keys_report_state(ddata);
 	return 0;
 }
-#endif
 
 static SIMPLE_DEV_PM_OPS(gpio_keys_pm_ops, gpio_keys_suspend, gpio_keys_resume);
 
@@ -873,7 +893,7 @@ static struct platform_driver gpio_keys_device_driver = {
 	.driver		= {
 		.name	= "gpio-keys",
 		.pm	= &gpio_keys_pm_ops,
-		.of_match_table = of_match_ptr(gpio_keys_of_match),
+		.of_match_table = gpio_keys_of_match,
 	}
 };
 
diff --git a/drivers/input/keyboard/gpio_keys_polled.c b/drivers/input/keyboard/gpio_keys_polled.c
index 62bdb1d48c49..bed4f2086158 100644
--- a/drivers/input/keyboard/gpio_keys_polled.c
+++ b/drivers/input/keyboard/gpio_keys_polled.c
@@ -30,10 +30,10 @@
 #define DRV_NAME	"gpio-keys-polled"
 
 struct gpio_keys_button_data {
+	struct gpio_desc *gpiod;
 	int last_state;
 	int count;
 	int threshold;
-	int can_sleep;
 };
 
 struct gpio_keys_polled_dev {
@@ -46,7 +46,7 @@ struct gpio_keys_polled_dev {
 };
 
 static void gpio_keys_button_event(struct input_polled_dev *dev,
-				   struct gpio_keys_button *button,
+				   const struct gpio_keys_button *button,
 				   int state)
 {
 	struct gpio_keys_polled_dev *bdev = dev->private;
@@ -70,21 +70,22 @@ static void gpio_keys_button_event(struct input_polled_dev *dev,
 }
 
 static void gpio_keys_polled_check_state(struct input_polled_dev *dev,
-					 struct gpio_keys_button *button,
+					 const struct gpio_keys_button *button,
 					 struct gpio_keys_button_data *bdata)
 {
 	int state;
 
-	if (bdata->can_sleep)
-		state = !!gpiod_get_value_cansleep(button->gpiod);
-	else
-		state = !!gpiod_get_value(button->gpiod);
-
-	gpio_keys_button_event(dev, button, state);
+	state = gpiod_get_value_cansleep(bdata->gpiod);
+	if (state < 0) {
+		dev_err(dev->input->dev.parent,
+			"failed to get gpio state: %d\n", state);
+	} else {
+		gpio_keys_button_event(dev, button, state);
 
-	if (state != bdata->last_state) {
-		bdata->count = 0;
-		bdata->last_state = state;
+		if (state != bdata->last_state) {
+			bdata->count = 0;
+			bdata->last_state = state;
+		}
 	}
 }
 
@@ -142,48 +143,35 @@ static void gpio_keys_polled_close(struct input_polled_dev *dev)
 		pdata->disable(bdev->dev);
 }
 
-static struct gpio_keys_platform_data *gpio_keys_polled_get_devtree_pdata(struct device *dev)
+static struct gpio_keys_platform_data *
+gpio_keys_polled_get_devtree_pdata(struct device *dev)
 {
 	struct gpio_keys_platform_data *pdata;
 	struct gpio_keys_button *button;
 	struct fwnode_handle *child;
-	int error;
 	int nbuttons;
 
 	nbuttons = device_get_child_node_count(dev);
 	if (nbuttons == 0)
-		return NULL;
+		return ERR_PTR(-EINVAL);
 
 	pdata = devm_kzalloc(dev, sizeof(*pdata) + nbuttons * sizeof(*button),
 			     GFP_KERNEL);
 	if (!pdata)
 		return ERR_PTR(-ENOMEM);
 
-	pdata->buttons = (struct gpio_keys_button *)(pdata + 1);
+	button = (struct gpio_keys_button *)(pdata + 1);
+
+	pdata->buttons = button;
+	pdata->nbuttons = nbuttons;
 
 	pdata->rep = device_property_present(dev, "autorepeat");
 	device_property_read_u32(dev, "poll-interval", &pdata->poll_interval);
 
 	device_for_each_child_node(dev, child) {
-		struct gpio_desc *desc;
-
-		desc = devm_get_gpiod_from_child(dev, NULL, child);
-		if (IS_ERR(desc)) {
-			error = PTR_ERR(desc);
-			if (error != -EPROBE_DEFER)
-				dev_err(dev,
-					"Failed to get gpio flags, error: %d\n",
-					error);
-			fwnode_handle_put(child);
-			return ERR_PTR(error);
-		}
-
-		button = &pdata->buttons[pdata->nbuttons++];
-		button->gpiod = desc;
-
-		if (fwnode_property_read_u32(child, "linux,code", &button->code)) {
-			dev_err(dev, "Button without keycode: %d\n",
-				pdata->nbuttons - 1);
+		if (fwnode_property_read_u32(child, "linux,code",
+					     &button->code)) {
+			dev_err(dev, "button without keycode\n");
 			fwnode_handle_put(child);
 			return ERR_PTR(-EINVAL);
 		}
@@ -206,10 +194,9 @@ static struct gpio_keys_platform_data *gpio_keys_polled_get_devtree_pdata(struct
 		if (fwnode_property_read_u32(child, "debounce-interval",
 					     &button->debounce_interval))
 			button->debounce_interval = 5;
-	}
 
-	if (pdata->nbuttons == 0)
-		return ERR_PTR(-EINVAL);
+		button++;
+	}
 
 	return pdata;
 }
@@ -220,7 +207,7 @@ static void gpio_keys_polled_set_abs_params(struct input_dev *input,
 	int i, min = 0, max = 0;
 
 	for (i = 0; i < pdata->nbuttons; i++) {
-		struct gpio_keys_button *button = &pdata->buttons[i];
+		const struct gpio_keys_button *button = &pdata->buttons[i];
 
 		if (button->type != EV_ABS || button->code != code)
 			continue;
@@ -230,6 +217,7 @@ static void gpio_keys_polled_set_abs_params(struct input_dev *input,
 		if (button->value > max)
 			max = button->value;
 	}
+
 	input_set_abs_params(input, code, min, max, 0, 0);
 }
 
@@ -242,6 +230,7 @@ MODULE_DEVICE_TABLE(of, gpio_keys_polled_of_match);
 static int gpio_keys_polled_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
+	struct fwnode_handle *child = NULL;
 	const struct gpio_keys_platform_data *pdata = dev_get_platdata(dev);
 	struct gpio_keys_polled_dev *bdev;
 	struct input_polled_dev *poll_dev;
@@ -254,10 +243,6 @@ static int gpio_keys_polled_probe(struct platform_device *pdev)
 		pdata = gpio_keys_polled_get_devtree_pdata(dev);
 		if (IS_ERR(pdata))
 			return PTR_ERR(pdata);
-		if (!pdata) {
-			dev_err(dev, "missing platform data\n");
-			return -EINVAL;
-		}
 	}
 
 	if (!pdata->poll_interval) {
@@ -300,20 +285,48 @@ static int gpio_keys_polled_probe(struct platform_device *pdev)
 		__set_bit(EV_REP, input->evbit);
 
 	for (i = 0; i < pdata->nbuttons; i++) {
-		struct gpio_keys_button *button = &pdata->buttons[i];
+		const struct gpio_keys_button *button = &pdata->buttons[i];
 		struct gpio_keys_button_data *bdata = &bdev->data[i];
 		unsigned int type = button->type ?: EV_KEY;
 
 		if (button->wakeup) {
 			dev_err(dev, DRV_NAME " does not support wakeup\n");
+			fwnode_handle_put(child);
 			return -EINVAL;
 		}
 
-		/*
-		 * Legacy GPIO number so request the GPIO here and
-		 * convert it to descriptor.
-		 */
-		if (!button->gpiod && gpio_is_valid(button->gpio)) {
+		if (!dev_get_platdata(dev)) {
+			/* No legacy static platform data */
+			child = device_get_next_child_node(dev, child);
+			if (!child) {
+				dev_err(dev, "missing child device node\n");
+				return -EINVAL;
+			}
+
+			bdata->gpiod = devm_get_gpiod_from_child(dev, NULL,
+								 child);
+			if (IS_ERR(bdata->gpiod)) {
+				error = PTR_ERR(bdata->gpiod);
+				if (error != -EPROBE_DEFER)
+					dev_err(dev,
+						"failed to get gpio: %d\n",
+						error);
+				fwnode_handle_put(child);
+				return error;
+			}
+
+			error = gpiod_direction_input(bdata->gpiod);
+			if (error) {
+				dev_err(dev, "Failed to configure GPIO %d as input: %d\n",
+					desc_to_gpio(bdata->gpiod), error);
+				fwnode_handle_put(child);
+				return error;
+			}
+		} else if (gpio_is_valid(button->gpio)) {
+			/*
+			 * Legacy GPIO number so request the GPIO here and
+			 * convert it to descriptor.
+			 */
 			unsigned flags = GPIOF_IN;
 
 			if (button->active_low)
@@ -322,18 +335,21 @@ static int gpio_keys_polled_probe(struct platform_device *pdev)
 			error = devm_gpio_request_one(&pdev->dev, button->gpio,
 					flags, button->desc ? : DRV_NAME);
 			if (error) {
-				dev_err(dev, "unable to claim gpio %u, err=%d\n",
+				dev_err(dev,
+					"unable to claim gpio %u, err=%d\n",
 					button->gpio, error);
 				return error;
 			}
 
-			button->gpiod = gpio_to_desc(button->gpio);
+			bdata->gpiod = gpio_to_desc(button->gpio);
+			if (!bdata->gpiod) {
+				dev_err(dev,
+					"unable to convert gpio %u to descriptor\n",
+					button->gpio);
+				return -EINVAL;
+			}
 		}
 
-		if (IS_ERR(button->gpiod))
-			return PTR_ERR(button->gpiod);
-
-		bdata->can_sleep = gpiod_cansleep(button->gpiod);
 		bdata->last_state = -1;
 		bdata->threshold = DIV_ROUND_UP(button->debounce_interval,
 						pdata->poll_interval);
@@ -344,6 +360,8 @@ static int gpio_keys_polled_probe(struct platform_device *pdev)
 							button->code);
 	}
 
+	fwnode_handle_put(child);
+
 	bdev->poll_dev = poll_dev;
 	bdev->dev = dev;
 	bdev->pdata = pdata;
diff --git a/drivers/input/keyboard/lpc32xx-keys.c b/drivers/input/keyboard/lpc32xx-keys.c
index 265d641c40e2..632523d4f5dc 100644
--- a/drivers/input/keyboard/lpc32xx-keys.c
+++ b/drivers/input/keyboard/lpc32xx-keys.c
@@ -182,7 +182,7 @@ static int lpc32xx_kscan_probe(struct platform_device *pdev)
 	}
 
 	irq = platform_get_irq(pdev, 0);
-	if (irq < 0 || irq >= NR_IRQS) {
+	if (irq < 0) {
 		dev_err(&pdev->dev, "failed to get platform irq\n");
 		return -EINVAL;
 	}
diff --git a/drivers/input/keyboard/pxa27x_keypad.c b/drivers/input/keyboard/pxa27x_keypad.c
index fcef5d1365e2..e24443376e75 100644
--- a/drivers/input/keyboard/pxa27x_keypad.c
+++ b/drivers/input/keyboard/pxa27x_keypad.c
@@ -316,7 +316,7 @@ static int pxa27x_keypad_build_keycode_from_dt(struct pxa27x_keypad *keypad)
 	error = of_property_read_u32(np, "marvell,debounce-interval",
 				     &pdata->debounce_interval);
 	if (error) {
-		dev_err(dev, "failed to parse debpunce-interval\n");
+		dev_err(dev, "failed to parse debounce-interval\n");
 		return error;
 	}
 
diff --git a/drivers/input/keyboard/tca8418_keypad.c b/drivers/input/keyboard/tca8418_keypad.c
index 9002298698fc..3048ef3e3e16 100644
--- a/drivers/input/keyboard/tca8418_keypad.c
+++ b/drivers/input/keyboard/tca8418_keypad.c
@@ -164,11 +164,18 @@ static void tca8418_read_keypad(struct tca8418_keypad *keypad_data)
 	int error, col, row;
 	u8 reg, state, code;
 
-	/* Initial read of the key event FIFO */
-	error = tca8418_read_byte(keypad_data, REG_KEY_EVENT_A, &reg);
+	do {
+		error = tca8418_read_byte(keypad_data, REG_KEY_EVENT_A, &reg);
+		if (error < 0) {
+			dev_err(&keypad_data->client->dev,
+				"unable to read REG_KEY_EVENT_A\n");
+			break;
+		}
+
+		/* Assume that key code 0 signifies empty FIFO */
+		if (reg <= 0)
+			break;
 
-	/* Assume that key code 0 signifies empty FIFO */
-	while (error >= 0 && reg > 0) {
 		state = reg & KEY_EVENT_VALUE;
 		code  = reg & KEY_EVENT_CODE;
 
@@ -184,11 +191,7 @@ static void tca8418_read_keypad(struct tca8418_keypad *keypad_data)
 
 		/* Read for next loop */
 		error = tca8418_read_byte(keypad_data, REG_KEY_EVENT_A, &reg);
-	}
-
-	if (error < 0)
-		dev_err(&keypad_data->client->dev,
-			"unable to read REG_KEY_EVENT_A\n");
+	} while (1);
 
 	input_sync(input);
 }