From: Guenter Roeck <linux@roeck-us.net>
Date: Fri, 10 Jan 2014 00:12:52 +0000 (-0800)
Subject: Add declaration of PTR_ERR_OR_ZERO for kernels prior to 3.12
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=e7641b37f042e8476d1825a0043cc4dd9d665712;p=groeck-nct6775

Add declaration of PTR_ERR_OR_ZERO for kernels prior to 3.12

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---

diff --git a/compat.h b/compat.h
index de13589..0a46c0d 100644
--- a/compat.h
+++ b/compat.h
@@ -39,6 +39,14 @@ static void sysfs_remove_groups(struct kobject *kobj,
 		sysfs_remove_group(kobj, groups[i]);
 }
 
+static inline int __must_check PTR_ERR_OR_ZERO(__force const void *ptr)
+{
+	if (IS_ERR(ptr))
+		return PTR_ERR(ptr);
+	else
+		return 0;
+}
+
 #endif
 
 #if LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 21)