ide: IDE_HFLAG_SERIALIZE_DMA bugfix

Patch re-ordering could be harmful:

commit 1fd1890594bd355a4217f5658a34763e77decee3
Author: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Date:   Sat Apr 26 22:25:24 2008 +0200

    ide: add IDE_HFLAG_SERIALIZE_DMA host flag
...

is buggy because ->init_dma method / ide_hwif_setup_dma() is called
before IDE_HFLAG_SERIALIZE_DMA host flag is checked.

Fix it by checking IDE_HFLAG_SERIALIZE[_DMA] after DMA initialization.

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

1 files changed, 6 insertions, 6 deletions

diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index 591deda3f86a..34b0d4f26b58 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -1355,12 +1355,6 @@ static void ide_init_port(ide_hwif_t *hwif, unsigned int port,
         if (hwif->chipset != ide_dtc2278 || hwif->channel == 0)
                 hwif->port_ops = d->port_ops;
 
-        if ((d->host_flags & IDE_HFLAG_SERIALIZE) ||
-            ((d->host_flags & IDE_HFLAG_SERIALIZE_DMA) && hwif->dma_base)) {
-                if (hwif->mate)
-                        hwif->mate->serialized = hwif->serialized = 1;
-        }
-
         hwif->swdma_mask = d->swdma_mask;
         hwif->mwdma_mask = d->mwdma_mask;
         hwif->ultra_mask = d->udma_mask;
@@ -1382,6 +1376,12 @@ static void ide_init_port(ide_hwif_t *hwif, unsigned int port,
                         hwif->dma_ops = d->dma_ops;
         }
 
+        if ((d->host_flags & IDE_HFLAG_SERIALIZE) ||
+            ((d->host_flags & IDE_HFLAG_SERIALIZE_DMA) && hwif->dma_base)) {
+                if (hwif->mate)
+                        hwif->mate->serialized = hwif->serialized = 1;
+        }
+
         if (d->host_flags & IDE_HFLAG_RQSIZE_256)
                 hwif->rqsize = 256;