ide: drop dsc_handle argument from ide_pc_intr()

* Add 'int dsc' argument to ->pc_callback method.

* Call ide_tape_handle_dsc() internally in ide_tape_callback()
  if dsc argument is set and update ide_pc_intr() accordingly.

There should be no functional changes caused by this patch.

Cc: Borislav Petkov <petkovbb@gmail.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c
index d36f155..b330806 100644
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -156,7 +156,7 @@
 		idefloppy_end_request(drive, 1, 0);
 }
 
-static void ide_floppy_callback(ide_drive_t *drive)
+static void ide_floppy_callback(ide_drive_t *drive, int dsc)
 {
 	idefloppy_floppy_t *floppy = drive->driver_data;
 	struct ide_atapi_pc *pc = floppy->pc;
@@ -223,7 +223,7 @@
 
 	return ide_pc_intr(drive, floppy->pc, idefloppy_pc_intr,
 			   WAIT_FLOPPY_CMD, NULL, idefloppy_update_buffers,
-			   idefloppy_retry_pc, NULL, ide_io_buffers);
+			   idefloppy_retry_pc, ide_io_buffers);
 }
 
 /*
@@ -308,7 +308,7 @@
 		pc->error = IDEFLOPPY_ERROR_GENERAL;
 
 		floppy->failed_pc = NULL;
-		drive->pc_callback(drive);
+		drive->pc_callback(drive, 0);
 		return ide_stopped;
 	}