drivers/scsi: Remove unnecessary casts of private_data

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index 2968c6b..307aba9 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -210,7 +210,7 @@
 
 static int sg_allow_access(struct file *filp, unsigned char *cmd)
 {
-	struct sg_fd *sfp = (struct sg_fd *)filp->private_data;
+	struct sg_fd *sfp = filp->private_data;
 
 	if (sfp->parentdp->device->type == TYPE_SCANNER)
 		return 0;