Staging: hv: Enable blkvsc_ioctl()

We can support HDIO_GET_IDENTITY ioctl, enable blkvsc_ioctl().

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/hv/blkvsc_drv.c b/drivers/staging/hv/blkvsc_drv.c
index 3a344d29e6b4a383ce6f27043146cfb40772e353..3b47495eee4eaec231cf738fe9611c30c115ca64 100644 (file)
--- a/drivers/staging/hv/blkvsc_drv.c
+++ b/drivers/staging/hv/blkvsc_drv.c
@@ -413,23 +413,18 @@ static void blkvsc_init_rw(struct blkvsc_request *blkvsc_req)
 
 
 static int blkvsc_ioctl(struct block_device *bd, fmode_t mode,
-                       unsigned cmd, unsigned long argument)
+                       unsigned cmd, unsigned long arg)
 {
-       int ret;
+       struct block_device_context *blkdev = bd->bd_disk->private_data;
+       int ret = 0;
 
        switch (cmd) {
-       /*
-        * TODO: I think there is certain format for HDIO_GET_IDENTITY rather
-        * than just a GUID. Commented it out for now.
-        */
-#if 0
        case HDIO_GET_IDENTITY:
                DPRINT_INFO(BLKVSC_DRV, "HDIO_GET_IDENTITY\n");
                if (copy_to_user((void __user *)arg, blkdev->device_id,
                                 blkdev->device_id_len))
                        ret = -EFAULT;
                break;
-#endif
        default:
                ret = -EINVAL;
                break;