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] / drivers / firmware / efivars.c

diff --git a/drivers/firmware/efivars.c b/drivers/firmware/efivars.c
index 0287ff6..9b7e4d5 100644 (file)
--- a/drivers/firmware/efivars.c
+++ b/drivers/firmware/efivars.c
@@ -65,11 +65,11 @@
  *   v0.01 release to linux-ia64@linuxia64.org
  */
 
+#include <linux/capability.h>
 #include <linux/config.h>
 #include <linux/types.h>
 #include <linux/errno.h>
 #include <linux/init.h>
-#include <linux/sched.h>               /* for capable() */
 #include <linux/mm.h>
 #include <linux/module.h>
 #include <linux/string.h>
@@ -352,7 +352,7 @@ static ssize_t efivar_attr_show(struct kobject *kobj, struct attribute *attr,
 {
        struct efivar_entry *var = to_efivar_entry(kobj);
        struct efivar_attribute *efivar_attr = to_efivar_attr(attr);
-       ssize_t ret = 0;
+       ssize_t ret = -EIO;
 
        if (!capable(CAP_SYS_ADMIN))
                return -EACCES;
@@ -368,7 +368,7 @@ static ssize_t efivar_attr_store(struct kobject *kobj, struct attribute *attr,
 {
        struct efivar_entry *var = to_efivar_entry(kobj);
        struct efivar_attribute *efivar_attr = to_efivar_attr(attr);
-       ssize_t ret = 0;
+       ssize_t ret = -EIO;
 
        if (!capable(CAP_SYS_ADMIN))
                return -EACCES;
@@ -568,20 +568,20 @@ systab_read(struct subsystem *entry, char *buf)
        if (!entry || !buf)
                return -EINVAL;
 
-       if (efi.mps)
-               str += sprintf(str, "MPS=0x%lx\n", __pa(efi.mps));
-       if (efi.acpi20)
-               str += sprintf(str, "ACPI20=0x%lx\n", __pa(efi.acpi20));
-       if (efi.acpi)
-               str += sprintf(str, "ACPI=0x%lx\n", __pa(efi.acpi));
-       if (efi.smbios)
-               str += sprintf(str, "SMBIOS=0x%lx\n", __pa(efi.smbios));
-       if (efi.hcdp)
-               str += sprintf(str, "HCDP=0x%lx\n", __pa(efi.hcdp));
-       if (efi.boot_info)
-               str += sprintf(str, "BOOTINFO=0x%lx\n", __pa(efi.boot_info));
-       if (efi.uga)
-               str += sprintf(str, "UGA=0x%lx\n", __pa(efi.uga));
+       if (efi.mps != EFI_INVALID_TABLE_ADDR)
+               str += sprintf(str, "MPS=0x%lx\n", efi.mps);
+       if (efi.acpi20 != EFI_INVALID_TABLE_ADDR)
+               str += sprintf(str, "ACPI20=0x%lx\n", efi.acpi20);
+       if (efi.acpi != EFI_INVALID_TABLE_ADDR)
+               str += sprintf(str, "ACPI=0x%lx\n", efi.acpi);
+       if (efi.smbios != EFI_INVALID_TABLE_ADDR)
+               str += sprintf(str, "SMBIOS=0x%lx\n", efi.smbios);
+       if (efi.hcdp != EFI_INVALID_TABLE_ADDR)
+               str += sprintf(str, "HCDP=0x%lx\n", efi.hcdp);
+       if (efi.boot_info != EFI_INVALID_TABLE_ADDR)
+               str += sprintf(str, "BOOTINFO=0x%lx\n", efi.boot_info);
+       if (efi.uga != EFI_INVALID_TABLE_ADDR)
+               str += sprintf(str, "UGA=0x%lx\n", efi.uga);
 
        return str - buf;
 }
@@ -614,16 +614,14 @@ efivar_create_sysfs_entry(unsigned long variable_name_size,
        char *short_name;
        struct efivar_entry *new_efivar;
 
-       short_name = kmalloc(short_name_size + 1, GFP_KERNEL);
-       new_efivar = kmalloc(sizeof(struct efivar_entry), GFP_KERNEL);
+       short_name = kzalloc(short_name_size + 1, GFP_KERNEL);
+       new_efivar = kzalloc(sizeof(struct efivar_entry), GFP_KERNEL);
 
        if (!short_name || !new_efivar)  {
-               if (short_name)        kfree(short_name);
-               if (new_efivar)        kfree(new_efivar);
+               kfree(short_name);
+               kfree(new_efivar);
                return 1;
        }
-       memset(short_name, 0, short_name_size+1);
-       memset(new_efivar, 0, sizeof(struct efivar_entry));
 
        memcpy(new_efivar->var.VariableName, variable_name,
                variable_name_size);
@@ -644,7 +642,8 @@ efivar_create_sysfs_entry(unsigned long variable_name_size,
        kobj_set_kset_s(new_efivar, vars_subsys);
        kobject_register(&new_efivar->kobj);
 
-       kfree(short_name); short_name = NULL;
+       kfree(short_name);
+       short_name = NULL;
 
        spin_lock(&efivars_lock);
        list_add(&new_efivar->list, &efivar_list);
@@ -673,14 +672,12 @@ efivars_init(void)
        if (!efi_enabled)
                return -ENODEV;
 
-       variable_name = kmalloc(variable_name_size, GFP_KERNEL);
+       variable_name = kzalloc(variable_name_size, GFP_KERNEL);
        if (!variable_name) {
                printk(KERN_ERR "efivars: Memory allocation failed.\n");
                return -ENOMEM;
        }
 
-       memset(variable_name, 0, variable_name_size);
-
        printk(KERN_INFO "EFI Variables Facility v%s %s\n", EFIVARS_VERSION,
               EFIVARS_DATE);