[PATCH] powerpc: Kill _machine and hard-coded platform numbers

This removes statically assigned platform numbers and reworks the
powerpc platform probe code to use a better mechanism.  With this,
board support files can simply declare a new machine type with a
macro, and implement a probe() function that uses the flattened
device-tree to detect if they apply for a given machine.

We now have a machine_is() macro that replaces the comparisons of
_machine with the various PLATFORM_* constants.  This commit also
changes various drivers to use the new macro instead of looking at
_machine.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/char/generic_nvram.c b/drivers/char/generic_nvram.c
index 1b5e01e6e129..43ff59816511 100644
--- a/drivers/char/generic_nvram.c
+++ b/drivers/char/generic_nvram.c
@@ -22,6 +22,9 @@
 #include <linux/smp_lock.h>
 #include <asm/uaccess.h>
 #include <asm/nvram.h>
+#ifdef CONFIG_PPC_PMAC
+#include <asm/machdep.h>
+#endif
 
 #define NVRAM_SIZE      8192
 
@@ -92,7 +95,7 @@ static int nvram_ioctl(struct inode *inode, struct file *file,
         case IOC_NVRAM_GET_OFFSET: {
                 int part, offset;
 
-                if (_machine != _MACH_Pmac)
+                if (!machine_is(powermac))
                         return -EINVAL;
                 if (copy_from_user(&part, (void __user*)arg, sizeof(part)) != 0)
                         return -EFAULT;