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/pci/scc_pata.c b/drivers/ide/pci/scc_pata.c
index 727eda6db76c..c110f359b03e 100644
--- a/drivers/ide/pci/scc_pata.c
+++ b/drivers/ide/pci/scc_pata.c
@@ -741,6 +741,8 @@ static void scc_tf_read(ide_drive_t *drive, ide_task_t *task)
         /* be sure we're looking at the low order bits */
         scc_ide_outb(ATA_DEVCTL_OBS & ~0x80, io_ports->ctl_addr);
 
+        if (task->tf_flags & IDE_TFLAG_IN_FEATURE)
+                tf->feature = scc_ide_inb(io_ports->feature_addr);
         if (task->tf_flags & IDE_TFLAG_IN_NSECT)
                 tf->nsect  = scc_ide_inb(io_ports->nsect_addr);
         if (task->tf_flags & IDE_TFLAG_IN_LBAL)