Changeset 737 for GPL/branches/uniaud32-exp/lib32/misc.c

Timestamp:

Sep 18, 2022, 7:39:50 AM (3 years ago)

Author:

Paul Smedley

Message:

Initial commit of 5.17.15

File:

• GPL/branches/uniaud32-exp/lib32/misc.c (modified) (2 diffs)

GPL/branches/uniaud32-exp/lib32/misc.c

@@ -28 +28 @@
 #include <linux/init.h>
 #include <linux/fs.h>
+#include <linux/of.h>
 #include <linux/poll.h>
 #define CONFIG_PROC_FS 1
@@ -784 +785 @@
         free_pages((unsigned long) ptr, pg);
 }
+
+/**
+ * of_node_put() - Decrement refcount of a node
+ * @node:       Node to dec refcount, NULL is supported to simplify writing of
+ *              callers
+ */
+void of_node_put(struct device_node *node)
+{
+        if (node)
+                kobject_put(&node->kobj);
+}
+
+/**
+ * sysfs_streq - return true if strings are equal, modulo trailing newline
+ * @s1: one string
+ * @s2: another string
+ *
+ * This routine returns true iff two strings are equal, treating both
+ * NUL and newline-then-NUL as equivalent string terminations.  It's
+ * geared for use with sysfs input strings, which generally terminate
+ * with newlines but are compared against values without newlines.
+ */
+bool sysfs_streq(const char *s1, const char *s2)
+{
+        while (*s1 && *s1 == *s2) {
+                s1++;
+                s2++;
+        }
+
+        if (*s1 == *s2)
+                return true;
+        if (!*s1 && *s2 == '\n' && !s2[1])
+                return true;
+        if (*s1 == '\n' && !s1[1] && !*s2)
+                return true;
+        return false;
+}
+EXPORT_SYMBOL(sysfs_streq);