This is a first set of pin control fixes for the v4.3 series:

- Some IS_ERR() fixes from Julia Lawall. I always wanted the compiler
   to catch these but error pointers by nailing them as an err pointer
   intrinsic type or something seem to be a "no can do". In any
   case, cocinelle is obviously up to the task, better than bugs
   staying around.
 
 - Better error handling for NULL GPIO chips.
 
 - Fix a compile error from the big irq desc refactoring. I'm
   surprised the fallout wasn't bigger than this.
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJV+VRDAAoJEEEQszewGV1z7UQP+wZi0VTV3VY04sbGxFe9NTCl
 BSXcFYoxq/6SMRkgewa47MIqEejO0q8Qq+2wE1HhUy4xiCSg5XLxCJGePqUGsglf
 0GjUbTinXuc+HqEdR56xqz+H8RAjC5bqlUFOhXNPhpmAJlLvg6WL4t/08Dcd2N/9
 RuoAlbPqzO8ingAvoj4r8cwF7/4pRojOvh/aFQ5jZ4aVriL04Uqnzdnf4OmplNIj
 gzEMICTIg6hQo0iWrKnn97DSHGR4UFKn7FQxF6g48tOIzE4hiWgfyXdpY6emG0Zi
 eeEH6y/kAk3V3kmNqLe83N8TLBiHvKoj33s/ZtFuLHoakeMcQR3B3FUodQWAEs8A
 6bzB8bninXEU8h8eyOhly/0DIOM6rGTEyNgPcJI0F5CSfcB5uFdl5s+X4xEEiwKo
 Bsx1sfLKKI7p7lWXbML+7B+3JcgLr4E0yT6QsC9yA2AyHIgtZIBfp1hc82U9Qfgf
 lheT09XGGS+8uuECQuG3woI/qokZdHlnIGsY28sqEJVrSKyXoYSFZ03YZi2DEKsj
 2qPJfpfEE6x6gMUsfh+u1oJlfYrJfSU+X4uBFJ9estLOX7J9y/nygULZutQFImZ1
 hUBhFDnUiKe33oe4VuLplDt/KkQ1JGC32mgYsSVGTLzUS2/vyeTlYsLXxsohLgv6
 0fec5ExVS9/JWJHwFwOf
 =xpIg
 -----END PGP SIGNATURE-----

Merge tag 'pinctrl-v4.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin control fixes from Linus Walleij:
 "This is a first set of pin control fixes for the v4.3 series.  Nothing
  special to say, business as usual.

   - Some IS_ERR() fixes from Julia Lawall.  I always wanted the
     compiler to catch these but error pointers by nailing them as an
     err pointer intrinsic type or something seem to be a "no can do".
     In any case, cocinelle is obviously up to the task, better than
     bugs staying around.

   - Better error handling for NULL GPIO chips.

   - Fix a compile error from the big irq desc refactoring.  I'm
     surprised the fallout wasn't bigger than this"

* tag 'pinctrl-v4.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  pinctrl: samsung: s3c24xx: fix syntax error
  pinctrl: core: Warn about NULL gpio_chip in pinctrl_ready_for_gpio_range()
  pinctrl: join lines that can be a single line within 80 columns
  pinctrl: digicolor: convert null test to IS_ERR test
  pinctrl: qcom: ssbi: convert null test to IS_ERR test

drivers/pinctrl/core.c

@@ -349,6 +349,9 @@ static bool pinctrl_ready_for_gpio_range(unsigned gpio)
 	struct pinctrl_gpio_range *range = NULL;
 	struct gpio_chip *chip = gpio_to_chip(gpio);
 
+	if (WARN(!chip, "no gpio_chip for gpio%i?", gpio))
+		return false;
+
 	mutex_lock(&pinctrldev_list_mutex);
 
 	/* Loop over the pin controllers */

drivers/pinctrl/pinctrl-digicolor.c

@@ -337,9 +337,9 @@ static int dc_pinctrl_probe(struct platform_device *pdev)
 	pmap->dev = &pdev->dev;
 
 	pmap->pctl = pinctrl_register(pctl_desc, &pdev->dev, pmap);
-	if (!pmap->pctl) {
+	if (IS_ERR(pmap->pctl)) {
 		dev_err(&pdev->dev, "pinctrl driver registration failed\n");
-		return -EINVAL;
+		return PTR_ERR(pmap->pctl);
 	}
 
 	ret = dc_gpiochip_add(pmap, pdev->dev.of_node);

drivers/pinctrl/pinmux.c

@@ -313,8 +313,7 @@ static int pinmux_func_name_to_selector(struct pinctrl_dev *pctldev,
 
 	/* See if this pctldev has this function */
 	while (selector < nfuncs) {
-		const char *fname = ops->get_function_name(pctldev,
-							   selector);
+		const char *fname = ops->get_function_name(pctldev, selector);
 
 		if (!strcmp(function, fname))
 			return selector;

drivers/pinctrl/qcom/pinctrl-ssbi-gpio.c

@@ -723,9 +723,9 @@ static int pm8xxx_gpio_probe(struct platform_device *pdev)
 #endif
 
 	pctrl->pctrl = pinctrl_register(&pctrl->desc, &pdev->dev, pctrl);
-	if (!pctrl->pctrl) {
+	if (IS_ERR(pctrl->pctrl)) {
 		dev_err(&pdev->dev, "couldn't register pm8xxx gpio driver\n");
-		return -ENODEV;
+		return PTR_ERR(pctrl->pctrl);
 	}
 
 	pctrl->chip = pm8xxx_gpio_template;

drivers/pinctrl/qcom/pinctrl-ssbi-mpp.c

@@ -814,9 +814,9 @@ static int pm8xxx_mpp_probe(struct platform_device *pdev)
 #endif
 
 	pctrl->pctrl = pinctrl_register(&pctrl->desc, &pdev->dev, pctrl);
-	if (!pctrl->pctrl) {
+	if (IS_ERR(pctrl->pctrl)) {
 		dev_err(&pdev->dev, "couldn't register pm8xxx mpp driver\n");
-		return -ENODEV;
+		return PTR_ERR(pctrl->pctrl);
 	}
 
 	pctrl->chip = pm8xxx_mpp_template;

drivers/pinctrl/samsung/pinctrl-s3c24xx.c

@@ -361,7 +361,7 @@ static inline void s3c24xx_demux_eint(struct irq_desc *desc,
 				      u32 offset, u32 range)
 {
 	struct s3c24xx_eint_data *data = irq_desc_get_handler_data(desc);
-	struct irq_chip *chip = irq_desc_get_irq_chip(desc);
+	struct irq_chip *chip = irq_desc_get_chip(desc);
 	struct samsung_pinctrl_drv_data *d = data->drvdata;
 	unsigned int pend, mask;