From: Tony Lindgren <tony@atomide.com>
Date: Mon, 2 Jun 2014 23:13:46 +0000 (-0700)
Subject: gpio: of: Fix handling for deferred probe for -gpio suffix
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=06fc3b70f1dc9c53070fa63a528830f54afc3c38;p=openwrt%2Fstaging%2Fblogic.git

gpio: of: Fix handling for deferred probe for -gpio suffix

Commit dd34c37aa3e (gpio: of: Allow -gpio suffix for property names)
added parsing for both -gpio and -gpios suffix but also changed
the handling for deferred probe unintentionally. Because of the
looping the second name will now return -ENOENT instead of
-EPROBE_DEFER. Fix the issue by breaking out of the loop if
-EPROBE_DEFER is encountered.

Signed-off-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index d9c9cb4665db..2ebc9071e354 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;
 	}