4 files changed, 7 insertions, 20 deletions

diff --git a/drivers/gpio/gpio-mcp23s08.c b/drivers/gpio/gpio-mcp23s08.c
index fe7c0e211f9..57adbc90fda 100644
--- a/drivers/gpio/gpio-mcp23s08.c
+++ b/drivers/gpio/gpio-mcp23s08.c
@@ -900,8 +900,6 @@ static int mcp23s08_probe(struct spi_device *spi)
 			if (spi_present_mask & (1 << addr))
 				chips++;
 		}
-		if (!chips)
-			return -ENODEV;
 	} else {
 		type = spi_get_device_id(spi)->driver_data;
 		pdata = dev_get_platdata(&spi->dev);
@@ -940,10 +938,6 @@ static int mcp23s08_probe(struct spi_device *spi)
 		if (!(spi_present_mask & (1 << addr)))
 			continue;
 		chips--;
-		if (chips < 0) {
-			dev_err(&spi->dev, "FATAL: invalid negative chip id\n");
-			goto fail;
-		}
 		data->mcp[addr] = &data->chip[chips];
 		status = mcp23s08_probe_one(data->mcp[addr], &spi->dev, spi,
 					    0x40 | (addr << 1), type, base,
diff --git a/drivers/gpio/gpio-rcar.c b/drivers/gpio/gpio-rcar.c
index 0c9f803fc1a..b6ae89ea881 100644
--- a/drivers/gpio/gpio-rcar.c
+++ b/drivers/gpio/gpio-rcar.c
@@ -284,6 +284,7 @@ static int gpio_rcar_irq_domain_map(struct irq_domain *h, unsigned int irq,
 
 static struct irq_domain_ops gpio_rcar_irq_domain_ops = {
 	.map	= gpio_rcar_irq_domain_map,
+	.xlate	= irq_domain_xlate_twocell,
 };
 
 struct gpio_rcar_info {
diff --git a/drivers/gpio/gpio-stmpe.c b/drivers/gpio/gpio-stmpe.c
index 2776a09bee5..628b5849429 100644
--- a/drivers/gpio/gpio-stmpe.c
+++ b/drivers/gpio/gpio-stmpe.c
@@ -23,7 +23,8 @@
 enum { REG_RE, REG_FE, REG_IE };
 
 #define CACHE_NR_REGS	3
-#define CACHE_NR_BANKS	(STMPE_NR_GPIOS / 8)
+/* No variant has more than 24 GPIOs */
+#define CACHE_NR_BANKS	(24 / 8)
 
 struct stmpe_gpio {
 	struct gpio_chip chip;
@@ -31,8 +32,6 @@ struct stmpe_gpio {
 	struct device *dev;
 	struct mutex irq_lock;
 	struct irq_domain *domain;
-
-	int irq_base;
 	unsigned norequest_mask;
 
 	/* Caches of interrupt control registers for bus_lock */
@@ -311,13 +310,8 @@ static const struct irq_domain_ops stmpe_gpio_irq_simple_ops = {
 static int stmpe_gpio_irq_init(struct stmpe_gpio *stmpe_gpio,
 		struct device_node *np)
 {
-	int base = 0;
-
-	if (!np)
-		base = stmpe_gpio->irq_base;
-
 	stmpe_gpio->domain = irq_domain_add_simple(np,
-				stmpe_gpio->chip.ngpio, base,
+				stmpe_gpio->chip.ngpio, 0,
 				&stmpe_gpio_irq_simple_ops, stmpe_gpio);
 	if (!stmpe_gpio->domain) {
 		dev_err(stmpe_gpio->dev, "failed to create irqdomain\n");
@@ -354,7 +348,7 @@ static int stmpe_gpio_probe(struct platform_device *pdev)
 #ifdef CONFIG_OF
 	stmpe_gpio->chip.of_node = np;
 #endif
-	stmpe_gpio->chip.base = pdata ? pdata->gpio_base : -1;
+	stmpe_gpio->chip.base = -1;
 
 	if (pdata)
 		stmpe_gpio->norequest_mask = pdata->norequest_mask;
@@ -362,9 +356,7 @@ static int stmpe_gpio_probe(struct platform_device *pdev)
 		of_property_read_u32(np, "st,norequest-mask",
 				&stmpe_gpio->norequest_mask);
 
-	if (irq >= 0)
-		stmpe_gpio->irq_base = stmpe->irq_base + STMPE_INT_GPIO(0);
-	else
+	if (irq < 0)
 		dev_info(&pdev->dev,
 			"device configured in no-irq mode; "
 			"irqs are not available\n");
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index d9c9cb4665d..2ebc9071e35 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -2614,7 +2614,7 @@ static struct gpio_desc *of_find_gpio(struct device *dev, const char *con_id,
 
 		desc = of_get_named_gpiod_flags(dev->of_node, prop_name, idx,
 						&of_flags);
-		if (!IS_ERR(desc))
+		if (!IS_ERR(desc) || (PTR_ERR(desc) == -EPROBE_DEFER))
 			break;
 	}