Fedora kernel-2.6.17-1.2142_FC4 patched with stable patch-2.6.17.4-vs2.0.2-rc26.diff

[linux-2.6.git] / kernel / params.c

diff --git a/kernel/params.c b/kernel/params.c
index 5513844..af43ecd 100644 (file)
--- a/kernel/params.c
+++ b/kernel/params.c
@@ -23,6 +23,7 @@
 #include <linux/module.h>
 #include <linux/device.h>
 #include <linux/err.h>
+#include <linux/slab.h>
 
 #if 0
 #define DEBUGP printk
@@ -30,7 +31,7 @@
 #define DEBUGP(fmt, a...)
 #endif
 
-static inline int dash2underscore(char c)
+static inline char dash2underscore(char c)
 {
        if (c == '-')
                return '_';
@@ -80,8 +81,6 @@ static char *next_arg(char *args, char **param, char **val)
        int in_quote = 0, quoted = 0;
        char *next;
 
-       /* Chew any extra spaces */
-       while (*args == ' ') args++;
        if (*args == '"') {
                args++;
                in_quote = 1;
@@ -121,6 +120,10 @@ static char *next_arg(char *args, char **param, char **val)
                next = args + i + 1;
        } else
                next = args + i;
+
+       /* Chew up trailing spaces. */
+       while (*next == ' ')
+               next++;
        return next;
 }
 
@@ -135,6 +138,10 @@ int parse_args(const char *name,
 
        DEBUGP("Parsing ARGS: %s\n", args);
 
+       /* Chew leading spaces */
+       while (*args == ' ')
+               args++;
+
        while (*args) {
                int ret;
 
@@ -258,12 +265,12 @@ int param_get_invbool(char *buffer, struct kernel_param *kp)
 }
 
 /* We cheat here and temporarily mangle the string. */
-int param_array(const char *name,
-               const char *val,
-               unsigned int min, unsigned int max,
-               void *elem, int elemsize,
-               int (*set)(const char *, struct kernel_param *kp),
-               int *num)
+static int param_array(const char *name,
+                      const char *val,
+                      unsigned int min, unsigned int max,
+                      void *elem, int elemsize,
+                      int (*set)(const char *, struct kernel_param *kp),
+                      int *num)
 {
        int ret;
        struct kernel_param kp;
@@ -542,8 +549,8 @@ static void __init kernel_param_sysfs_setup(const char *name,
 {
        struct module_kobject *mk;
 
-       mk = kmalloc(sizeof(struct module_kobject), GFP_KERNEL);
-       memset(mk, 0, sizeof(struct module_kobject));
+       mk = kzalloc(sizeof(struct module_kobject), GFP_KERNEL);
+       BUG_ON(!mk);
 
        mk->mod = THIS_MODULE;
        kobj_set_kset_s(mk, module_subsys);
@@ -612,7 +619,7 @@ static void __init param_sysfs_builtin(void)
 
 
 /* module-related sysfs stuff */
-#ifdef CONFIG_MODULES
+#ifdef CONFIG_SYSFS
 
 #define to_module_attr(n) container_of(n, struct module_attribute, attr);
 #define to_module_kobject(n) container_of(n, struct module_kobject, kobj);
@@ -629,15 +636,10 @@ static ssize_t module_attr_show(struct kobject *kobj,
        mk = to_module_kobject(kobj);
 
        if (!attribute->show)
-               return -EPERM;
-
-       if (!try_module_get(mk->mod))
-               return -ENODEV;
+               return -EIO;
 
        ret = attribute->show(attribute, mk->mod, buf);
 
-       module_put(mk->mod);
-
        return ret;
 }
 
@@ -653,15 +655,10 @@ static ssize_t module_attr_store(struct kobject *kobj,
        mk = to_module_kobject(kobj);
 
        if (!attribute->store)
-               return -EPERM;
-
-       if (!try_module_get(mk->mod))
-               return -ENODEV;
+               return -EIO;
 
        ret = attribute->store(attribute, mk->mod, buf, len);
 
-       module_put(mk->mod);
-
        return ret;
 }