scsi: scsi_ioctl: Unexport sg_scsi_ioctl()

Just call scsi_ioctl() in sg as that has the same effect.

Link: https://lore.kernel.org/r/20210724072033.1284840-25-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/scsi_ioctl.c

@@ -530,8 +530,8 @@ static int sg_io(struct request_queue *q, struct gendisk *bd_disk,
  *      Positive numbers returned are the compacted SCSI error codes (4
  *      bytes in one int) where the lowest byte is the SCSI status.
  */
-int sg_scsi_ioctl(struct request_queue *q, struct gendisk *disk, fmode_t mode,
-		struct scsi_ioctl_command __user *sic)
+static int sg_scsi_ioctl(struct request_queue *q, struct gendisk *disk,
+		fmode_t mode, struct scsi_ioctl_command __user *sic)
 {
 	enum { OMAX_SB_LEN = 16 };	/* For backward compatibility */
 	struct request *rq;
@@ -643,7 +643,6 @@ int sg_scsi_ioctl(struct request_queue *q, struct gendisk *disk, fmode_t mode,
 
 	return err;
 }
-EXPORT_SYMBOL_GPL(sg_scsi_ioctl);
 
 int put_sg_io_hdr(const struct sg_io_hdr *hdr, void __user *argp)
 {

drivers/scsi/sg.c

@@ -1109,7 +1109,7 @@ sg_ioctl_common(struct file *filp, Sg_device *sdp, Sg_fd *sfp,
 	case SCSI_IOCTL_SEND_COMMAND:
 		if (atomic_read(&sdp->detaching))
 			return -ENODEV;
-		return sg_scsi_ioctl(sdp->device->request_queue, NULL, filp->f_mode, p);
+		return scsi_ioctl(sdp->device, NULL, filp->f_mode, cmd_in, p);
 	case SG_SET_DEBUG:
 		result = get_user(val, ip);
 		if (result)

include/scsi/scsi_ioctl.h

@@ -47,8 +47,6 @@ int scsi_ioctl_block_when_processing_errors(struct scsi_device *sdev,
 		int cmd, bool ndelay);
 int scsi_ioctl(struct scsi_device *sdev, struct gendisk *disk, fmode_t mode,
 		int cmd, void __user *arg);
-int sg_scsi_ioctl(struct request_queue *q, struct gendisk *disk, fmode_t mode,
-			 struct scsi_ioctl_command __user *argp);
 int get_sg_io_hdr(struct sg_io_hdr *hdr, const void __user *argp);
 int put_sg_io_hdr(const struct sg_io_hdr *hdr, void __user *argp);
 bool scsi_cmd_allowed(unsigned char *cmd, fmode_t mode);