[SPARC] openprom: implement ->compat_ioctl

implement a compat_ioctl handle in the driver instead of having table
entries in sparc64 ioctl32.c (I plan to get rid of the arch ioctl32.c
file eventually)

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 33 insertions, 0 deletions

diff --git a/drivers/sbus/char/openprom.c b/drivers/sbus/char/openprom.c
index 58ed33749571..5028ac214326 100644
--- a/drivers/sbus/char/openprom.c
+++ b/drivers/sbus/char/openprom.c
@@ -39,6 +39,7 @@
 #include <linux/slab.h>
 #include <linux/string.h>
 #include <linux/miscdevice.h>
+#include <linux/smp_lock.h>
 #include <linux/init.h>
 #include <linux/fs.h>
 #include <asm/oplib.h>
@@ -565,6 +566,38 @@ static int openprom_ioctl(struct inode * inode, struct file * file,
         }
 }
 
+static long openprom_compat_ioctl(struct file *file, unsigned int cmd,
+                unsigned long arg)
+{
+        long rval = -ENOTTY;
+
+        /*
+         * SunOS/Solaris only, the NetBSD one's have embedded pointers in
+         * the arg which we'd need to clean up...
+         */
+        switch (cmd) {
+        case OPROMGETOPT:
+        case OPROMSETOPT:
+        case OPROMNXTOPT:
+        case OPROMSETOPT2:
+        case OPROMNEXT:
+        case OPROMCHILD:
+        case OPROMGETPROP:
+        case OPROMNXTPROP:
+        case OPROMU2P:
+        case OPROMGETCONS:
+        case OPROMGETFBNAME:
+        case OPROMGETBOOTARGS:
+        case OPROMSETCUR:
+        case OPROMPCI2NODE:
+        case OPROMPATH2NODE:
+                lock_kernel();
+                rval = openprom_ioctl(file->f_dentry->d_inode, file, cmd, arg);
+                lock_kernel();
+                break;
+        }
+}
+
 static int openprom_open(struct inode * inode, struct file * file)
 {
         DATA *data;