ide: add device flags

Add 'unsigned long dev_flags' to ide_drive_t and convert bitfields
to IDE_DFLAG_* flags.

While at it:
- IDE_DFLAG_ADDRESSING -> IDE_DFLAG_LBA48
- fixup some comments
- remove needless g->flags zeroing from ide*_probe()

There should be no functional changes caused by this patch.

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

1 files changed, 8 insertions, 3 deletions

diff --git a/drivers/ide/pci/ns87415.c b/drivers/ide/pci/ns87415.c
index 53bd645736d9..99e98e5e271c 100644
--- a/drivers/ide/pci/ns87415.c
+++ b/drivers/ide/pci/ns87415.c
@@ -137,7 +137,7 @@ static void __devinit superio_init_iops(struct hwif_s *hwif)
 static unsigned int ns87415_count = 0, ns87415_control[MAX_HWIFS] = { 0 };
 
 /*
- * This routine either enables/disables (according to drive->present)
+ * This routine either enables/disables (according to IDE_DFLAG_PRESENT)
  * the IRQ associated with the port (HWIF(drive)),
  * and selects either PIO or DMA handshaking for the next I/O operation.
  */
@@ -153,7 +153,11 @@ static void ns87415_prepare_drive (ide_drive_t *drive, unsigned int use_dma)
 
         /* Adjust IRQ enable bit */
         bit = 1 << (8 + hwif->channel);
-        new = drive->present ? (new & ~bit) : (new | bit);
+
+        if (drive->dev_flags & IDE_DFLAG_PRESENT)
+                new &= ~bit;
+        else
+                new |= bit;
 
         /* Select PIO or DMA, DMA may only be selected for one drive/channel. */
         bit   = 1 << (20 + drive->select.b.unit       + (hwif->channel << 1));
@@ -187,7 +191,8 @@ static void ns87415_prepare_drive (ide_drive_t *drive, unsigned int use_dma)
 
 static void ns87415_selectproc (ide_drive_t *drive)
 {
-        ns87415_prepare_drive (drive, drive->using_dma);
+        ns87415_prepare_drive(drive,
+                              !!(drive->dev_flags & IDE_DFLAG_USING_DMA));
 }
 
 static int ns87415_dma_end(ide_drive_t *drive)