Pull fluff into release branch
[sfrench/cifs-2.6.git] / drivers / acpi / osl.c
index 851ac492dbbc49089efc9c4cde84fd2839f6d855..ee0b9f761f765bb051dc793f81122aaebf1c6560 100644 (file)
@@ -205,7 +205,7 @@ void __iomem *acpi_os_map_memory(acpi_physical_address phys, acpi_size size)
 {
        if (phys > ULONG_MAX) {
                printk(KERN_ERR PREFIX "Cannot map memory that high\n");
-               return 0;
+               return NULL;
        }
        if (acpi_gbl_permanent_mmap)
                /*
@@ -890,26 +890,6 @@ u32 acpi_os_get_line(char *buffer)
 }
 #endif                         /*  ACPI_FUTURE_USAGE  */
 
-/* Assumes no unreadable holes inbetween */
-u8 acpi_os_readable(void *ptr, acpi_size len)
-{
-#if defined(__i386__) || defined(__x86_64__)
-       char tmp;
-       return !__get_user(tmp, (char __user *)ptr)
-           && !__get_user(tmp, (char __user *)ptr + len - 1);
-#endif
-       return 1;
-}
-
-#ifdef ACPI_FUTURE_USAGE
-u8 acpi_os_writable(void *ptr, acpi_size len)
-{
-       /* could do dummy write (racy) or a kernel page table lookup.
-          The later may be difficult at early boot when kmap doesn't work yet. */
-       return 1;
-}
-#endif
-
 acpi_status acpi_os_signal(u32 function, void *info)
 {
        switch (function) {