ide: move read_sff_dma_status() method to 'struct ide_dma_ops'

Move apparently misplaced read_sff_dma_status() method from 'struct ide_tp_ops'
to 'struct ide_dma_ops', renaming it to dma_sff_read_status() and making only
required for SFF-8038i compatible IDE controller drivers (greatly cutting down
the number of initializers) as its only user (outside ide-dma-sff.c and such
drivers) appears to be ide_pci_check_simplex() which is only called for such
controllers...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

1 files changed, 6 insertions, 2 deletions

diff --git a/include/linux/ide.h b/include/linux/ide.h
index ebc22a836520..3644f6323384 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -674,7 +674,6 @@ struct ide_tp_ops {
         void    (*exec_command)(struct hwif_s *, u8);
         u8      (*read_status)(struct hwif_s *);
         u8      (*read_altstatus)(struct hwif_s *);
-        u8      (*read_sff_dma_status)(struct hwif_s *);
 
         void    (*set_irq)(struct hwif_s *, int);
 
@@ -735,6 +734,11 @@ struct ide_dma_ops {
         int     (*dma_test_irq)(struct ide_drive_s *);
         void    (*dma_lost_irq)(struct ide_drive_s *);
         void    (*dma_timeout)(struct ide_drive_s *);
+        /*
+         * The following method is optional and only required to be
+         * implemented for the SFF-8038i compatible controllers.
+         */
+        u8      (*dma_sff_read_status)(struct hwif_s *);
 };
 
 struct ide_host;
@@ -1177,7 +1181,6 @@ void ide_tf_dump(const char *, struct ide_taskfile *);
 void ide_exec_command(ide_hwif_t *, u8);
 u8 ide_read_status(ide_hwif_t *);
 u8 ide_read_altstatus(ide_hwif_t *);
-u8 ide_read_sff_dma_status(ide_hwif_t *);
 
 void ide_set_irq(ide_hwif_t *, int);
 
@@ -1458,6 +1461,7 @@ void ide_dma_exec_cmd(ide_drive_t *, u8);
 extern void ide_dma_start(ide_drive_t *);
 int ide_dma_end(ide_drive_t *);
 int ide_dma_test_irq(ide_drive_t *);
+u8 ide_dma_sff_read_status(ide_hwif_t *);
 extern const struct ide_dma_ops sff_dma_ops;
 #else
 static inline int config_drive_for_dma(ide_drive_t *drive) { return 0; }