ide: use ->end_request only for private device driver requests

* Move IDE{FLOPPY,TAPE}_ERROR_* defines to <linux/ide.h> and rename them
  to IDE_DRV_ERROR_*.

* Handle ->end_request special cases for floppy/tape media in ide_kill_rq().

* Call ->end_request only for private device driver requests.

There should be no functional changes caused by this patch.

Acked-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c
index 3807616..da2f97d 100644
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -178,7 +178,12 @@
 
 void ide_kill_rq(ide_drive_t *drive, struct request *rq)
 {
-	if (rq->rq_disk) {
+	drive->failed_pc = NULL;
+
+	if (drive->media == ide_tape)
+		rq->errors = IDE_DRV_ERROR_GENERAL;
+
+	if (blk_special_request(rq) && rq->rq_disk) {
 		struct ide_driver *drv;
 
 		drv = *(struct ide_driver **)rq->rq_disk->private_data;