[SPARC] sbus rtc: implement ->compat_ioctl

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

1 files changed, 22 insertions, 0 deletions

diff --git a/drivers/sbus/char/rtc.c b/drivers/sbus/char/rtc.c
index 9b988baf0b51..5774bdd0e26f 100644
--- a/drivers/sbus/char/rtc.c
+++ b/drivers/sbus/char/rtc.c
@@ -210,6 +210,27 @@ static int rtc_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
         }
 }
 
+static long rtc_compat_ioctl(struct file *file, unsigned int cmd,
+        unsigned long arg)
+{
+        int rval = -ENOIOCTLCMD;
+
+        switch (cmd) {
+        /*
+         * These two are specific to this driver, the generic rtc ioctls
+         * are hanlded elsewhere.
+         */
+        case RTCGET:
+        case RTCSET:
+                lock_kernel();
+                rval = rtc_ioctl(file->f_dentry->d_inode, file, cmd, arg);
+                unlock_kernel();
+                break;
+        }
+
+        return rval;
+}
+
 static int rtc_open(struct inode *inode, struct file *file)
 {
         int ret;
@@ -237,6 +258,7 @@ static struct file_operations rtc_fops = {
         .owner =        THIS_MODULE,
         .llseek =       no_llseek,
         .ioctl =        rtc_ioctl,
+        .compat_ioctl = rtc_compat_ioctl,
         .open =         rtc_open,
         .release =      rtc_release,
 };