ide: use ->tf_read in ide_read_error()

* Add IDE_TFLAG_IN_FEATURE taskfile flag for reading Feature
  register and handle it in ->tf_read.

* Convert ide_read_error() to use ->tf_read instead of ->INB,
  then uninline and export it.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/ide/h8300/ide-h8300.c b/drivers/ide/h8300/ide-h8300.c
index a71433b3d0f3..548a2bf232c9 100644
--- a/drivers/ide/h8300/ide-h8300.c
+++ b/drivers/ide/h8300/ide-h8300.c
@@ -100,6 +100,8 @@ static void h8300_tf_read(ide_drive_t *drive, ide_task_t *task)
         /* be sure we're looking at the low order bits */
         outb(ATA_DEVCTL_OBS & ~0x80, io_ports->ctl_addr);
 
+        if (task->tf_flags & IDE_TFLAG_IN_FEATURE)
+                tf->feature = inb(io_ports->feature_addr);
         if (task->tf_flags & IDE_TFLAG_IN_NSECT)
                 tf->nsect  = inb(io_ports->nsect_addr);
         if (task->tf_flags & IDE_TFLAG_IN_LBAL)