gpio: brcmstb: remove custom 'brcmstb_gpio_set_names'

Gpiolib core code has been updated to support setting friendly names
through properly 'gpio-line-names'. Instead of redefine behaviour here
to skip the core to be executed, just properly assign the desired offset
per bank to get in the core the expected behaviour.

Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Gregory Fong <gregory.0xf0@gmail.com>
Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>

drivers/gpio/gpio-brcmstb.c

@@ -603,49 +603,6 @@ static const struct dev_pm_ops brcmstb_gpio_pm_ops = {
 	.resume_noirq = brcmstb_gpio_resume,
 };
 
-static void brcmstb_gpio_set_names(struct device *dev,
-				   struct brcmstb_gpio_bank *bank)
-{
-	struct device_node *np = dev->of_node;
-	const char **names;
-	int nstrings, base;
-	unsigned int i;
-
-	base = bank->id * MAX_GPIO_PER_BANK;
-
-	nstrings = of_property_count_strings(np, "gpio-line-names");
-	if (nstrings <= base)
-		/* Line names not present */
-		return;
-
-	names = devm_kcalloc(dev, MAX_GPIO_PER_BANK, sizeof(*names),
-			     GFP_KERNEL);
-	if (!names)
-		return;
-
-	/*
-	 * Make sure to not index beyond the end of the number of descriptors
-	 * of the GPIO device.
-	 */
-	for (i = 0; i < bank->width; i++) {
-		const char *name;
-		int ret;
-
-		ret = of_property_read_string_index(np, "gpio-line-names",
-						    base + i, &name);
-		if (ret) {
-			if (ret != -ENODATA)
-				dev_err(dev, "unable to name line %d: %d\n",
-					base + i, ret);
-			break;
-		}
-		if (*name)
-			names[i] = name;
-	}
-
-	bank->gc.names = names;
-}
-
 static int brcmstb_gpio_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
@@ -759,6 +716,7 @@ static int brcmstb_gpio_probe(struct platform_device *pdev)
 		gc->of_xlate = brcmstb_gpio_of_xlate;
 		/* not all ngpio lines are valid, will use bank width later */
 		gc->ngpio = MAX_GPIO_PER_BANK;
+		gc->offset = bank->id * MAX_GPIO_PER_BANK;
 		if (priv->parent_irq > 0)
 			gc->to_irq = brcmstb_gpio_to_irq;
 
@@ -769,7 +727,6 @@ static int brcmstb_gpio_probe(struct platform_device *pdev)
 		need_wakeup_event |= !!__brcmstb_gpio_get_active_irqs(bank);
 		gc->write_reg(reg_base + GIO_MASK(bank->id), 0);
 
-		brcmstb_gpio_set_names(dev, bank);
 		err = gpiochip_add_data(gc, bank);
 		if (err) {
 			dev_err(dev, "Could not add gpiochip for bank %d\n",