From f9819739427e6049d2d318743a4a25817018afd4 Mon Sep 17 00:00:00 2001 From: Thomas Abraham Date: Wed, 27 Mar 2013 00:12:32 +0900 Subject: [PATCH] pinctrl: exynos5440: fix probe failure due to missing pin-list in config nodes The property 'samsung,exynos5440-pins' is optional in configuration nodes which are included in the Exynos5440 pin-controller device node. Fix the incorrect failure in driver probe if 'samsung,exynos5440-pins' property is not found in the configuration nodes. Signed-off-by: Thomas Abraham Cc: Linus Walleij Signed-off-by: Kukjin Kim Signed-off-by: Linus Walleij --- drivers/pinctrl/pinctrl-exynos5440.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/pinctrl/pinctrl-exynos5440.c b/drivers/pinctrl/pinctrl-exynos5440.c index eb8e502e11ef..7126b7db86c5 100644 --- a/drivers/pinctrl/pinctrl-exynos5440.c +++ b/drivers/pinctrl/pinctrl-exynos5440.c @@ -670,8 +670,10 @@ static int exynos5440_pinctrl_parse_dt(struct platform_device *pdev, ret = exynos5440_pinctrl_parse_dt_pins(pdev, cfg_np, &pin_list, &npins); - if (ret) - return ret; + if (ret) { + gname = NULL; + goto skip_to_pin_function; + } /* derive pin group name from the node name */ gname = devm_kzalloc(dev, strlen(cfg_np->name) + GSUFFIX_LEN, @@ -687,6 +689,7 @@ static int exynos5440_pinctrl_parse_dt(struct platform_device *pdev, grp->num_pins = npins; grp++; +skip_to_pin_function: ret = of_property_read_u32(cfg_np, "samsung,exynos5440-pin-function", &function); if (ret) @@ -709,7 +712,7 @@ static int exynos5440_pinctrl_parse_dt(struct platform_device *pdev, return -ENOMEM; } func->groups[0] = gname; - func->num_groups = 1; + func->num_groups = gname ? 1 : 0; func->function = function; func++; func_idx++;