5 files changed, 16 insertions, 13 deletions

diff --git a/drivers/ide/pci/aec62xx.c b/drivers/ide/pci/aec62xx.c
index be0d077dbbdf..f3912aa8e576 100644
--- a/drivers/ide/pci/aec62xx.c
+++ b/drivers/ide/pci/aec62xx.c
@@ -187,11 +187,9 @@ static void __devinit init_hwif_aec62xx(ide_hwif_t *hwif)
 
         hwif->set_pio_mode = &aec_set_pio_mode;
 
-        if (dev->device == PCI_DEVICE_ID_ARTOP_ATP850UF) {
-                if(hwif->mate)
-                        hwif->mate->serialized = hwif->serialized = 1;
+        if (dev->device == PCI_DEVICE_ID_ARTOP_ATP850UF)
                 hwif->set_dma_mode = &aec6210_set_mode;
-        } else
+        else
                 hwif->set_dma_mode = &aec6260_set_mode;
 
         hwif->drives[0].autotune = hwif->drives[1].autotune = 1;
@@ -219,7 +217,9 @@ static ide_pci_device_t aec62xx_chipsets[] __devinitdata = {
                 .init_chipset   = init_chipset_aec62xx,
                 .init_hwif      = init_hwif_aec62xx,
                 .enablebits     = {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}},
-                .host_flags     = IDE_HFLAG_NO_ATAPI_DMA | IDE_HFLAG_OFF_BOARD,
+                .host_flags     = IDE_HFLAG_SERIALIZE |
+                                  IDE_HFLAG_NO_ATAPI_DMA |
+                                  IDE_HFLAG_OFF_BOARD,
                 .pio_mask       = ATA_PIO4,
                 .mwdma_mask     = ATA_MWDMA2,
                 .udma_mask      = ATA_UDMA2,
diff --git a/drivers/ide/pci/cs5530.c b/drivers/ide/pci/cs5530.c
index 5e77a3d8e6d0..0324a8a88ef4 100644
--- a/drivers/ide/pci/cs5530.c
+++ b/drivers/ide/pci/cs5530.c
@@ -245,9 +245,6 @@ static void __devinit init_hwif_cs5530 (ide_hwif_t *hwif)
         unsigned long basereg;
         u32 d0_timings;
 
-        if (hwif->mate)
-                hwif->serialized = hwif->mate->serialized = 1;
-
         hwif->set_pio_mode = &cs5530_set_pio_mode;
         hwif->set_dma_mode = &cs5530_set_dma_mode;
 
@@ -271,7 +268,9 @@ static ide_pci_device_t cs5530_chipset __devinitdata = {
         .name           = "CS5530",
         .init_chipset   = init_chipset_cs5530,
         .init_hwif      = init_hwif_cs5530,
-        .host_flags     = IDE_HFLAG_POST_SET_MODE | IDE_HFLAG_BOOTABLE,
+        .host_flags     = IDE_HFLAG_SERIALIZE |
+                          IDE_HFLAG_POST_SET_MODE |
+                          IDE_HFLAG_BOOTABLE,
         .pio_mask       = ATA_PIO4,
         .mwdma_mask     = ATA_MWDMA2,
         .udma_mask      = ATA_UDMA2,
diff --git a/drivers/ide/pci/sc1200.c b/drivers/ide/pci/sc1200.c
index 252b12f9c954..2471a6dcf6fa 100644
--- a/drivers/ide/pci/sc1200.c
+++ b/drivers/ide/pci/sc1200.c
@@ -362,9 +362,6 @@ static int sc1200_resume (struct pci_dev *dev)
  */
 static void __devinit init_hwif_sc1200 (ide_hwif_t *hwif)
 {
-        if (hwif->mate)
-                hwif->serialized = hwif->mate->serialized = 1;
-
         hwif->set_pio_mode = &sc1200_set_pio_mode;
         hwif->set_dma_mode = &sc1200_set_dma_mode;
 
@@ -381,7 +378,9 @@ static void __devinit init_hwif_sc1200 (ide_hwif_t *hwif)
 static ide_pci_device_t sc1200_chipset __devinitdata = {
         .name           = "SC1200",
         .init_hwif      = init_hwif_sc1200,
-        .host_flags     = IDE_HFLAG_ABUSE_DMA_MODES | IDE_HFLAG_POST_SET_MODE |
+        .host_flags     = IDE_HFLAG_SERIALIZE |
+                          IDE_HFLAG_POST_SET_MODE |
+                          IDE_HFLAG_ABUSE_DMA_MODES |
                           IDE_HFLAG_BOOTABLE,
         .pio_mask       = ATA_PIO4,
         .mwdma_mask     = ATA_MWDMA2,
diff --git a/drivers/ide/setup-pci.c b/drivers/ide/setup-pci.c
index 1da9935ba948..aae4806f0603 100644
--- a/drivers/ide/setup-pci.c
+++ b/drivers/ide/setup-pci.c
@@ -565,6 +565,9 @@ void ide_pci_setup_ports(struct pci_dev *dev, ide_pci_device_t *d, int pciirq, a
                 hwif->host_flags = d->host_flags;
                 hwif->pio_mask = d->pio_mask;
 
+                if ((d->host_flags & IDE_HFLAG_SERIALIZE) && hwif->mate)
+                        hwif->mate->serialized = hwif->serialized = 1;
+
                 if (hwif->dma_base) {
                         hwif->swdma_mask = d->swdma_mask;
                         hwif->mwdma_mask = d->mwdma_mask;
diff --git a/include/linux/ide.h b/include/linux/ide.h
index b12510d21f25..659b60abc259 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1257,6 +1257,8 @@ enum {
         IDE_HFLAG_NO_LBA48_DMA          = (1 << 18),
         /* data FIFO is cleared by an error */
         IDE_HFLAG_ERROR_STOPS_FIFO      = (1 << 19),
+        /* serialize ports */
+        IDE_HFLAG_SERIALIZE             = (1 << 20),
 };
 
 #ifdef CONFIG_BLK_DEV_OFFBOARD