[PATCH] IDE: claim extra DMA ports regardless of channel

- Claim extra DMA I/O ports regardless of what IDE channels are
  present/enabled.

- Remove extra ports handling from ide_mapped_mmio_dma() since it's not
  applicable to the custom-mapping IDE drivers.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 9 insertions, 5 deletions

diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index 2b1a1389c318..8c3f06242280 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -450,7 +450,7 @@ void ide_hwif_release_regions(ide_hwif_t *hwif)
  *      @hwif: hwif to update
  *      @tmp_hwif: template
  *
- *      Restore hwif to a previous state by copying most settngs
+ *      Restore hwif to a previous state by copying most settings
  *      from the template.
  */
 
@@ -539,9 +539,10 @@ static void ide_hwif_restore(ide_hwif_t *hwif, ide_hwif_t *tmp_hwif)
         hwif->dma_vendor3               = tmp_hwif->dma_vendor3;
         hwif->dma_prdtable              = tmp_hwif->dma_prdtable;
 
-        hwif->dma_extra                 = tmp_hwif->dma_extra;
         hwif->config_data               = tmp_hwif->config_data;
         hwif->select_data               = tmp_hwif->select_data;
+        hwif->extra_base                = tmp_hwif->extra_base;
+        hwif->extra_ports               = tmp_hwif->extra_ports;
         hwif->autodma                   = tmp_hwif->autodma;
         hwif->udma_four                 = tmp_hwif->udma_four;
         hwif->no_dsc                    = tmp_hwif->no_dsc;
@@ -550,7 +551,7 @@ static void ide_hwif_restore(ide_hwif_t *hwif, ide_hwif_t *tmp_hwif)
 }
 
 /**
- *      ide_unregister          -       free an ide interface
+ *      ide_unregister          -       free an IDE interface
  *      @index: index of interface (will change soon to a pointer)
  *
  *      Perform the final unregister of an IDE interface. At the moment
@@ -563,8 +564,8 @@ static void ide_hwif_restore(ide_hwif_t *hwif, ide_hwif_t *tmp_hwif)
  *      deadlocking the IDE layer. The shutdown callback is called
  *      before we take the lock and free resources. It is up to the
  *      caller to be sure there is no pending I/O here, and that
- *      the interfce will not be reopened (present/vanishing locking
- *      isnt yet done btw). After we commit to the final kill we
+ *      the interface will not be reopened (present/vanishing locking
+ *      isn't yet done BTW). After we commit to the final kill we
  *      call the cleanup callback with the ide locks held.
  *
  *      Unregister restores the hwif structures to the default state.
@@ -674,6 +675,9 @@ void ide_unregister(unsigned int index)
                 hwif->dma_status = 0;
                 hwif->dma_vendor3 = 0;
                 hwif->dma_prdtable = 0;
+
+                hwif->extra_base  = 0;
+                hwif->extra_ports = 0;
         }
 
         /* copy original settings */