ide: add ide_pci_device_t.host_flags (take 2)

* Rename ide_pci_device_t.flags to ide_pci_device_t.host_flags
  and IDEPCI_FLAG_ISA_PORTS flag to IDE_HFLAG_ISA_PORTS.

* Add IDE_HFLAG_SINGLE flag for single channel devices.

* Convert core code and all IDE PCI drivers to use IDE_HFLAG_SINGLE
  and remove no longer needed ide_pci_device_t.channels field.

v2:
* Fix issues noticed by Sergei:
  - correct code alignment in scc_pata.c
  - s/IDE_HFLAG_SINGLE/~IDE_HFLAG_SINGLE/ in serverworks.c

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

33 files changed, 19 insertions, 85 deletions

diff --git a/drivers/ide/pci/aec62xx.c b/drivers/ide/pci/aec62xx.c
index 6d18fef558bd..f8ac91c22e64 100644
--- a/drivers/ide/pci/aec62xx.c
+++ b/drivers/ide/pci/aec62xx.c
@@ -265,7 +265,6 @@ static ide_pci_device_t aec62xx_chipsets[] __devinitdata = {
 		.init_setup	= init_setup_aec62xx,
 		.init_chipset	= init_chipset_aec62xx,
 		.init_hwif	= init_hwif_aec62xx,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.enablebits	= {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}},
 		.bootable	= OFF_BOARD,
@@ -275,7 +274,6 @@ static ide_pci_device_t aec62xx_chipsets[] __devinitdata = {
 		.init_setup	= init_setup_aec62xx,
 		.init_chipset	= init_chipset_aec62xx,
 		.init_hwif	= init_hwif_aec62xx,
-		.channels	= 2,
 		.autodma	= NOAUTODMA,
 		.bootable	= OFF_BOARD,
 		.udma_mask	= 0x1f, /* udma0-4 */
@@ -284,7 +282,6 @@ static ide_pci_device_t aec62xx_chipsets[] __devinitdata = {
 		.init_setup	= init_setup_aec62xx,
 		.init_chipset	= init_chipset_aec62xx,
 		.init_hwif	= init_hwif_aec62xx,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.enablebits	= {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}},
 		.bootable	= NEVER_BOARD,
@@ -294,7 +291,6 @@ static ide_pci_device_t aec62xx_chipsets[] __devinitdata = {
 		.init_setup	= init_setup_aec6x80,
 		.init_chipset	= init_chipset_aec62xx,
 		.init_hwif	= init_hwif_aec62xx,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.bootable	= OFF_BOARD,
 		.udma_mask	= 0x3f, /* udma0-5 */
@@ -303,7 +299,6 @@ static ide_pci_device_t aec62xx_chipsets[] __devinitdata = {
 		.init_setup	= init_setup_aec6x80,
 		.init_chipset	= init_chipset_aec62xx,
 		.init_hwif	= init_hwif_aec62xx,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.enablebits	= {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}},
 		.bootable	= OFF_BOARD,
diff --git a/drivers/ide/pci/alim15x3.c b/drivers/ide/pci/alim15x3.c
index ba0fb92b0417..1012da6e8a42 100644
--- a/drivers/ide/pci/alim15x3.c
+++ b/drivers/ide/pci/alim15x3.c
@@ -817,7 +817,6 @@ static ide_pci_device_t ali15x3_chipset __devinitdata = {
 	.init_chipset	= init_chipset_ali15x3,
 	.init_hwif	= init_hwif_ali15x3,
 	.init_dma	= init_dma_ali15x3,
-	.channels	= 2,
 	.autodma	= AUTODMA,
 	.bootable	= ON_BOARD,
 };
diff --git a/drivers/ide/pci/amd74xx.c b/drivers/ide/pci/amd74xx.c
index 8d30b99a54d8..9c3ea90aeb8b 100644
--- a/drivers/ide/pci/amd74xx.c
+++ b/drivers/ide/pci/amd74xx.c
@@ -448,7 +448,6 @@ static void __devinit init_hwif_amd74xx(ide_hwif_t *hwif)
 		.name		= name_str,				\
 		.init_chipset	= init_chipset_amd74xx,			\
 		.init_hwif	= init_hwif_amd74xx,			\
-		.channels	= 2,					\
 		.autodma	= AUTODMA,				\
 		.enablebits	= {{0x40,0x02,0x02}, {0x40,0x01,0x01}},	\
 		.bootable	= ON_BOARD,				\
@@ -459,7 +458,6 @@ static void __devinit init_hwif_amd74xx(ide_hwif_t *hwif)
 		.name		= name_str,				\
 		.init_chipset	= init_chipset_amd74xx,			\
 		.init_hwif	= init_hwif_amd74xx,			\
-		.channels	= 2,					\
 		.autodma	= AUTODMA,				\
 		.enablebits	= {{0x50,0x02,0x02}, {0x50,0x01,0x01}},	\
 		.bootable	= ON_BOARD,				\
diff --git a/drivers/ide/pci/atiixp.c b/drivers/ide/pci/atiixp.c
index bfdf086f4525..078adbe250d2 100644
--- a/drivers/ide/pci/atiixp.c
+++ b/drivers/ide/pci/atiixp.c
@@ -291,17 +291,16 @@ static ide_pci_device_t atiixp_pci_info[] __devinitdata = {
 	{	/* 0 */
 		.name		= "ATIIXP",
 		.init_hwif	= init_hwif_atiixp,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.enablebits	= {{0x48,0x01,0x00}, {0x48,0x08,0x00}},
 		.bootable	= ON_BOARD,
 	},{	/* 1 */
 		.name		= "SB600_PATA",
 		.init_hwif	= init_hwif_atiixp,
-		.channels	= 1,
 		.autodma	= AUTODMA,
 		.enablebits	= {{0x48,0x01,0x00}, {0x00,0x00,0x00}},
  		.bootable	= ON_BOARD,
+ 		.host_flags	= IDE_HFLAG_SINGLE,
  	},
 };
 
diff --git a/drivers/ide/pci/cmd64x.c b/drivers/ide/pci/cmd64x.c
index 5171e94facdc..8150a023dd7a 100644
--- a/drivers/ide/pci/cmd64x.c
+++ b/drivers/ide/pci/cmd64x.c
@@ -617,7 +617,6 @@ static ide_pci_device_t cmd64x_chipsets[] __devinitdata = {
 		.init_setup	= init_setup_cmd64x,
 		.init_chipset	= init_chipset_cmd64x,
 		.init_hwif	= init_hwif_cmd64x,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.enablebits	= {{0x00,0x00,0x00}, {0x51,0x08,0x08}},
 		.bootable	= ON_BOARD,
@@ -627,7 +626,6 @@ static ide_pci_device_t cmd64x_chipsets[] __devinitdata = {
 		.init_setup	= init_setup_cmd646,
 		.init_chipset	= init_chipset_cmd64x,
 		.init_hwif	= init_hwif_cmd64x,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.enablebits	= {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
 		.bootable	= ON_BOARD,
@@ -637,7 +635,6 @@ static ide_pci_device_t cmd64x_chipsets[] __devinitdata = {
 		.init_setup	= init_setup_cmd64x,
 		.init_chipset	= init_chipset_cmd64x,
 		.init_hwif	= init_hwif_cmd64x,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.enablebits	= {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
 		.bootable	= ON_BOARD,
@@ -647,7 +644,6 @@ static ide_pci_device_t cmd64x_chipsets[] __devinitdata = {
 		.init_setup	= init_setup_cmd64x,
 		.init_chipset	= init_chipset_cmd64x,
 		.init_hwif	= init_hwif_cmd64x,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.enablebits	= {{0x51,0x04,0x04}, {0x51,0x08,0x08}},
 		.bootable	= ON_BOARD,
diff --git a/drivers/ide/pci/cs5520.c b/drivers/ide/pci/cs5520.c
index 3b88a3a56116..5539a25eae99 100644
--- a/drivers/ide/pci/cs5520.c
+++ b/drivers/ide/pci/cs5520.c
@@ -194,10 +194,9 @@ static void __devinit init_hwif_cs5520(ide_hwif_t *hwif)
 		.name		= name_str,			\
 		.init_setup_dma = cs5520_init_setup_dma,	\
 		.init_hwif	= init_hwif_cs5520,		\
-		.channels	= 2,				\
 		.autodma	= AUTODMA,			\
 		.bootable	= ON_BOARD,			\
-		.flags		= IDEPCI_FLAG_ISA_PORTS,	\
+		.host_flags	= IDE_HFLAG_ISA_PORTS,		\
 	}
 
 static ide_pci_device_t cyrix_chipsets[] __devinitdata = {
diff --git a/drivers/ide/pci/cs5530.c b/drivers/ide/pci/cs5530.c
index b5c00d15a704..643d66cc6729 100644
--- a/drivers/ide/pci/cs5530.c
+++ b/drivers/ide/pci/cs5530.c
@@ -341,7 +341,6 @@ static ide_pci_device_t cs5530_chipset __devinitdata = {
 	.name		= "CS5530",
 	.init_chipset	= init_chipset_cs5530,
 	.init_hwif	= init_hwif_cs5530,
-	.channels	= 2,
 	.autodma	= AUTODMA,
 	.bootable	= ON_BOARD,
 };
diff --git a/drivers/ide/pci/cs5535.c b/drivers/ide/pci/cs5535.c
index 10f61f38243c..503979372144 100644
--- a/drivers/ide/pci/cs5535.c
+++ b/drivers/ide/pci/cs5535.c
@@ -228,9 +228,9 @@ static void __devinit init_hwif_cs5535(ide_hwif_t *hwif)
 static ide_pci_device_t cs5535_chipset __devinitdata = {
 	.name		= "CS5535",
 	.init_hwif	= init_hwif_cs5535,
-	.channels	= 1,
 	.autodma	= AUTODMA,
 	.bootable	= ON_BOARD,
+	.host_flags	= IDE_HFLAG_SINGLE,
 };
 
 static int __devinit cs5535_init_one(struct pci_dev *dev,
diff --git a/drivers/ide/pci/cy82c693.c b/drivers/ide/pci/cy82c693.c
index 103b9db97853..995b72563613 100644
--- a/drivers/ide/pci/cy82c693.c
+++ b/drivers/ide/pci/cy82c693.c
@@ -483,9 +483,9 @@ static ide_pci_device_t cy82c693_chipset __devinitdata = {
 	.init_chipset	= init_chipset_cy82c693,
 	.init_iops	= init_iops_cy82c693,
 	.init_hwif	= init_hwif_cy82c693,
-	.channels	= 1,
 	.autodma	= AUTODMA,
 	.bootable	= ON_BOARD,
+	.host_flags	= IDE_HFLAG_SINGLE,
 };
 
 static int __devinit cy82c693_init_one(struct pci_dev *dev, const struct pci_device_id *id)
diff --git a/drivers/ide/pci/generic.c b/drivers/ide/pci/generic.c
index 0d51a11e81da..48caa468b762 100644
--- a/drivers/ide/pci/generic.c
+++ b/drivers/ide/pci/generic.c
@@ -95,92 +95,77 @@ static ide_pci_device_t generic_chipsets[] __devinitdata = {
 	{	/* 0 */
 		.name		= "Unknown",
 		.init_hwif	= init_hwif_generic,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.bootable	= ON_BOARD,
 	},{	/* 1 */
 		.name		= "NS87410",
 		.init_hwif	= init_hwif_generic,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.enablebits	= {{0x43,0x08,0x08}, {0x47,0x08,0x08}},
 		.bootable	= ON_BOARD,
         },{	/* 2 */
 		.name		= "SAMURAI",
 		.init_hwif	= init_hwif_generic,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.bootable	= ON_BOARD,
 	},{	/* 3 */
 		.name		= "HT6565",
 		.init_hwif	= init_hwif_generic,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.bootable	= ON_BOARD,
 	},{	/* 4 */
 		.name		= "UM8673F",
 		.init_hwif	= init_hwif_generic,
-		.channels	= 2,
 		.autodma	= NODMA,
 		.bootable	= ON_BOARD,
 	},{	/* 5 */
 		.name		= "UM8886A",
 		.init_hwif	= init_hwif_generic,
-		.channels	= 2,
 		.autodma	= NODMA,
 		.bootable	= ON_BOARD,
 	},{	/* 6 */
 		.name		= "UM8886BF",
 		.init_hwif	= init_hwif_generic,
-		.channels	= 2,
 		.autodma	= NODMA,
 		.bootable	= ON_BOARD,
 	},{	/* 7 */
 		.name		= "HINT_IDE",
 		.init_hwif	= init_hwif_generic,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.bootable	= ON_BOARD,
 	},{	/* 8 */
 		.name		= "VIA_IDE",
 		.init_hwif	= init_hwif_generic,
-		.channels	= 2,
 		.autodma	= NOAUTODMA,
 		.bootable	= ON_BOARD,
 	},{	/* 9 */
 		.name		= "OPTI621V",
 		.init_hwif	= init_hwif_generic,
-		.channels	= 2,
 		.autodma	= NOAUTODMA,
 		.bootable	= ON_BOARD,
 	},{	/* 10 */
 		.name		= "VIA8237SATA",
 		.init_hwif	= init_hwif_generic,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.bootable	= OFF_BOARD,
 	},{	/* 11 */
 		.name 		= "Piccolo0102",
 		.init_hwif	= init_hwif_generic,
-		.channels	= 2,
 		.autodma	= NOAUTODMA,
 		.bootable	= ON_BOARD,
 	},{	/* 12 */
 		.name 		= "Piccolo0103",
 		.init_hwif	= init_hwif_generic,
-		.channels	= 2,
 		.autodma	= NOAUTODMA,
 		.bootable	= ON_BOARD,
 	},{	/* 13 */
 		.name 		= "Piccolo0105",
 		.init_hwif	= init_hwif_generic,
-		.channels	= 2,
 		.autodma	= NOAUTODMA,
 		.bootable	= ON_BOARD,
 	},{	/* 14 */
 		.name		= "Revolution",
 		.init_hwif	= init_hwif_generic,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.bootable	= OFF_BOARD,
 	}
diff --git a/drivers/ide/pci/hpt34x.c b/drivers/ide/pci/hpt34x.c
index 64f19743b127..6d2ef0ee0f2b 100644
--- a/drivers/ide/pci/hpt34x.c
+++ b/drivers/ide/pci/hpt34x.c
@@ -175,7 +175,6 @@ static ide_pci_device_t hpt34x_chipset __devinitdata = {
 	.name		= "HPT34X",
 	.init_chipset	= init_chipset_hpt34x,
 	.init_hwif	= init_hwif_hpt34x,
-	.channels	= 2,
 	.autodma	= NOAUTODMA,
 	.bootable	= NEVER_BOARD,
 	.extra		= 16
diff --git a/drivers/ide/pci/hpt366.c b/drivers/ide/pci/hpt366.c
index 81853d740aee..182346a04f36 100644
--- a/drivers/ide/pci/hpt366.c
+++ b/drivers/ide/pci/hpt366.c
@@ -1483,7 +1483,7 @@ static int __devinit init_setup_hpt366(struct pci_dev *dev, ide_pci_device_t *d)
 		 * to both functions -- really stupid design decision... :-(
 		 * Bit 4 is for the primary channel, bit 5 for the secondary.
 		 */
-		d->channels = 1;
+		d->host_flags |= IDE_HFLAG_SINGLE;
 		d->enablebits[0].mask = d->enablebits[0].val = 0x10;
 
 		d->udma_mask = HPT366_ALLOW_ATA66_3 ?
@@ -1546,7 +1546,6 @@ static ide_pci_device_t hpt366_chipsets[] __devinitdata = {
 		.init_chipset	= init_chipset_hpt366,
 		.init_hwif	= init_hwif_hpt366,
 		.init_dma	= init_dma_hpt366,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.enablebits	= {{0x50,0x04,0x04}, {0x54,0x04,0x04}},
 		.bootable	= OFF_BOARD,
@@ -1557,7 +1556,6 @@ static ide_pci_device_t hpt366_chipsets[] __devinitdata = {
 		.init_chipset	= init_chipset_hpt366,
 		.init_hwif	= init_hwif_hpt366,
 		.init_dma	= init_dma_hpt366,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.enablebits	= {{0x50,0x04,0x04}, {0x54,0x04,0x04}},
 		.udma_mask	= HPT372_ALLOW_ATA133_6 ? 0x7f : 0x3f,
@@ -1569,7 +1567,6 @@ static ide_pci_device_t hpt366_chipsets[] __devinitdata = {
 		.init_chipset	= init_chipset_hpt366,
 		.init_hwif	= init_hwif_hpt366,
 		.init_dma	= init_dma_hpt366,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.enablebits	= {{0x50,0x04,0x04}, {0x54,0x04,0x04}},
 		.udma_mask	= HPT302_ALLOW_ATA133_6 ? 0x7f : 0x3f,
@@ -1581,7 +1578,6 @@ static ide_pci_device_t hpt366_chipsets[] __devinitdata = {
 		.init_chipset	= init_chipset_hpt366,
 		.init_hwif	= init_hwif_hpt366,
 		.init_dma	= init_dma_hpt366,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.enablebits	= {{0x50,0x04,0x04}, {0x54,0x04,0x04}},
 		.udma_mask	= HPT371_ALLOW_ATA133_6 ? 0x7f : 0x3f,
@@ -1593,7 +1589,6 @@ static ide_pci_device_t hpt366_chipsets[] __devinitdata = {
 		.init_chipset	= init_chipset_hpt366,
 		.init_hwif	= init_hwif_hpt366,
 		.init_dma	= init_dma_hpt366,
-		.channels	= 2,	/* 4 */
 		.autodma	= AUTODMA,
 		.enablebits	= {{0x50,0x04,0x04}, {0x54,0x04,0x04}},
 		.udma_mask	= 0x3f,
@@ -1605,7 +1600,6 @@ static ide_pci_device_t hpt366_chipsets[] __devinitdata = {
 		.init_chipset	= init_chipset_hpt366,
 		.init_hwif	= init_hwif_hpt366,
 		.init_dma	= init_dma_hpt366,
-		.channels	= 2,	/* 4 */
 		.autodma	= AUTODMA,
 		.enablebits	= {{0x50,0x04,0x04}, {0x54,0x04,0x04}},
 		.udma_mask	= HPT372_ALLOW_ATA133_6 ? 0x7f : 0x3f,
diff --git a/drivers/ide/pci/it8213.c b/drivers/ide/pci/it8213.c
index ff48c23e571e..684b0ec79f41 100644
--- a/drivers/ide/pci/it8213.c
+++ b/drivers/ide/pci/it8213.c
@@ -272,10 +272,10 @@ static void __devinit init_hwif_it8213(ide_hwif_t *hwif)
 	{						\
 		.name		= name_str,		\
 		.init_hwif	= init_hwif_it8213,	\
-		.channels	= 1,			\
 		.autodma	= AUTODMA,		\
 		.enablebits	= {{0x41,0x80,0x80}}, \
 		.bootable	= ON_BOARD,		\
+		.host_flags	= IDE_HFLAG_SINGLE,	\
 	}
 
 static ide_pci_device_t it8213_chipsets[] __devinitdata = {
diff --git a/drivers/ide/pci/it821x.c b/drivers/ide/pci/it821x.c
index 8197b653ba1e..faccb2d4af43 100644
--- a/drivers/ide/pci/it821x.c
+++ b/drivers/ide/pci/it821x.c
@@ -718,7 +718,6 @@ static unsigned int __devinit init_chipset_it821x(struct pci_dev *dev, const cha
 		.name		= name_str,		\
 		.init_chipset	= init_chipset_it821x,	\
 		.init_hwif	= init_hwif_it821x,	\
-		.channels	= 2,			\
 		.autodma	= AUTODMA,		\
 		.bootable	= ON_BOARD,		\
 		.fixup	 	= it821x_fixups		\
diff --git a/drivers/ide/pci/jmicron.c b/drivers/ide/pci/jmicron.c
index a6008f63e71e..0edb9cd45854 100644
--- a/drivers/ide/pci/jmicron.c
+++ b/drivers/ide/pci/jmicron.c
@@ -177,7 +177,6 @@ fallback:
 	{						\
 		.name		= name_str,		\
 		.init_hwif	= init_hwif_jmicron,	\
-		.channels	= 2,			\
 		.autodma	= AUTODMA,		\
 		.bootable	= ON_BOARD,		\
 		.enablebits	= { {0x40, 1, 1}, {0x40, 0x10, 0x10} }, \
diff --git a/drivers/ide/pci/ns87415.c b/drivers/ide/pci/ns87415.c
index b310c4f51077..09941f37d635 100644
--- a/drivers/ide/pci/ns87415.c
+++ b/drivers/ide/pci/ns87415.c
@@ -281,7 +281,6 @@ static ide_pci_device_t ns87415_chipset __devinitdata = {
 	.init_iops	= init_iops_ns87415,
 #endif
 	.init_hwif	= init_hwif_ns87415,
-	.channels	= 2,
 	.autodma	= AUTODMA,
 	.bootable	= ON_BOARD,
 };
diff --git a/drivers/ide/pci/opti621.c b/drivers/ide/pci/opti621.c
index aede7eee9246..78d7adf2d0b0 100644
--- a/drivers/ide/pci/opti621.c
+++ b/drivers/ide/pci/opti621.c
@@ -350,14 +350,12 @@ static ide_pci_device_t opti621_chipsets[] __devinitdata = {
 	{	/* 0 */
 		.name		= "OPTI621",
 		.init_hwif	= init_hwif_opti621,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.enablebits	= {{0x45,0x80,0x00}, {0x40,0x08,0x00}},
 		.bootable	= ON_BOARD,
 	},{	/* 1 */
 		.name		= "OPTI621X",
 		.init_hwif	= init_hwif_opti621,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.enablebits	= {{0x45,0x80,0x00}, {0x40,0x08,0x00}},
 		.bootable	= ON_BOARD,
diff --git a/drivers/ide/pci/pdc202xx_new.c b/drivers/ide/pci/pdc202xx_new.c
index 06c5e93d37a2..f8508d9cccd3 100644
--- a/drivers/ide/pci/pdc202xx_new.c
+++ b/drivers/ide/pci/pdc202xx_new.c
@@ -566,7 +566,6 @@ static ide_pci_device_t pdcnew_chipsets[] __devinitdata = {
 		.init_setup	= init_setup_pdcnew,
 		.init_chipset	= init_chipset_pdcnew,
 		.init_hwif	= init_hwif_pdc202new,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.bootable	= OFF_BOARD,
 		.udma_mask	= 0x3f, /* udma0-5 */
@@ -575,7 +574,6 @@ static ide_pci_device_t pdcnew_chipsets[] __devinitdata = {
 		.init_setup	= init_setup_pdcnew,
 		.init_chipset	= init_chipset_pdcnew,
 		.init_hwif	= init_hwif_pdc202new,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.bootable	= OFF_BOARD,
 		.udma_mask	= 0x7f, /* udma0-6*/
@@ -584,7 +582,6 @@ static ide_pci_device_t pdcnew_chipsets[] __devinitdata = {
 		.init_setup	= init_setup_pdc20270,
 		.init_chipset	= init_chipset_pdcnew,
 		.init_hwif	= init_hwif_pdc202new,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.bootable	= OFF_BOARD,
 		.udma_mask	= 0x3f, /* udma0-5 */
@@ -593,7 +590,6 @@ static ide_pci_device_t pdcnew_chipsets[] __devinitdata = {
 		.init_setup	= init_setup_pdcnew,
 		.init_chipset	= init_chipset_pdcnew,
 		.init_hwif	= init_hwif_pdc202new,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.bootable	= OFF_BOARD,
 		.udma_mask	= 0x7f, /* udma0-6*/
@@ -602,7 +598,6 @@ static ide_pci_device_t pdcnew_chipsets[] __devinitdata = {
 		.init_setup	= init_setup_pdcnew,
 		.init_chipset	= init_chipset_pdcnew,
 		.init_hwif	= init_hwif_pdc202new,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.bootable	= OFF_BOARD,
 		.udma_mask	= 0x7f, /* udma0-6*/
@@ -611,7 +606,6 @@ static ide_pci_device_t pdcnew_chipsets[] __devinitdata = {
 		.init_setup	= init_setup_pdc20276,
 		.init_chipset	= init_chipset_pdcnew,
 		.init_hwif	= init_hwif_pdc202new,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.bootable	= OFF_BOARD,
 		.udma_mask	= 0x7f, /* udma0-6*/
@@ -620,7 +614,6 @@ static ide_pci_device_t pdcnew_chipsets[] __devinitdata = {
 		.init_setup	= init_setup_pdcnew,
 		.init_chipset	= init_chipset_pdcnew,
 		.init_hwif	= init_hwif_pdc202new,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.bootable	= OFF_BOARD,
 		.udma_mask	= 0x7f, /* udma0-6*/
diff --git a/drivers/ide/pci/pdc202xx_old.c b/drivers/ide/pci/pdc202xx_old.c
index 25cebfe18ddd..eb4e4a61d06e 100644
--- a/drivers/ide/pci/pdc202xx_old.c
+++ b/drivers/ide/pci/pdc202xx_old.c
@@ -441,7 +441,6 @@ static ide_pci_device_t pdc202xx_chipsets[] __devinitdata = {
 		.init_chipset	= init_chipset_pdc202xx,
 		.init_hwif	= init_hwif_pdc202xx,
 		.init_dma	= init_dma_pdc202xx,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.bootable	= OFF_BOARD,
 		.extra		= 16,
@@ -452,7 +451,6 @@ static ide_pci_device_t pdc202xx_chipsets[] __devinitdata = {
 		.init_chipset	= init_chipset_pdc202xx,
 		.init_hwif	= init_hwif_pdc202xx,
 		.init_dma	= init_dma_pdc202xx,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.bootable	= OFF_BOARD,
 		.extra		= 48,
@@ -463,7 +461,6 @@ static ide_pci_device_t pdc202xx_chipsets[] __devinitdata = {
 		.init_chipset	= init_chipset_pdc202xx,
 		.init_hwif	= init_hwif_pdc202xx,
 		.init_dma	= init_dma_pdc202xx,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.bootable	= OFF_BOARD,
 		.extra		= 48,
@@ -474,7 +471,6 @@ static ide_pci_device_t pdc202xx_chipsets[] __devinitdata = {
 		.init_chipset	= init_chipset_pdc202xx,
 		.init_hwif	= init_hwif_pdc202xx,
 		.init_dma	= init_dma_pdc202xx,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.bootable	= OFF_BOARD,
 		.extra		= 48,
@@ -485,7 +481,6 @@ static ide_pci_device_t pdc202xx_chipsets[] __devinitdata = {
 		.init_chipset	= init_chipset_pdc202xx,
 		.init_hwif	= init_hwif_pdc202xx,
 		.init_dma	= init_dma_pdc202xx,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.bootable	= OFF_BOARD,
 		.extra		= 48,
diff --git a/drivers/ide/pci/piix.c b/drivers/ide/pci/piix.c
index 1372c35be035..a4f88d25b16d 100644
--- a/drivers/ide/pci/piix.c
+++ b/drivers/ide/pci/piix.c
@@ -495,7 +495,6 @@ static void __devinit init_hwif_piix(ide_hwif_t *hwif)
 		.name		= name_str,		\
 		.init_chipset	= init_chipset_piix,	\
 		.init_hwif	= init_hwif_piix,	\
-		.channels	= 2,			\
 		.autodma	= AUTODMA,		\
 		.enablebits	= {{0x41,0x80,0x80}, {0x43,0x80,0x80}}, \
 		.bootable	= ON_BOARD,		\
@@ -514,11 +513,10 @@ static ide_pci_device_t piix_pci_info[] __devinitdata = {
 		 */
 		.name		= "MPIIX",
 		.init_hwif	= init_hwif_piix,
-		.channels	= 2,
 		.autodma	= NODMA,
 		.enablebits	= {{0x6d,0xc0,0x80}, {0x6d,0xc0,0xc0}},
 		.bootable	= ON_BOARD,
-		.flags		= IDEPCI_FLAG_ISA_PORTS
+		.host_flags	= IDE_HFLAG_ISA_PORTS,
 	},
 
 	/*  3 */ DECLARE_PIIX_DEV("PIIX3", 0x00),	/* no udma */
diff --git a/drivers/ide/pci/rz1000.c b/drivers/ide/pci/rz1000.c
index f8c954690142..10e1ae7a4a02 100644
--- a/drivers/ide/pci/rz1000.c
+++ b/drivers/ide/pci/rz1000.c
@@ -52,7 +52,6 @@ static void __devinit init_hwif_rz1000 (ide_hwif_t *hwif)
 static ide_pci_device_t rz1000_chipset __devinitdata = {
 	.name		= "RZ100x",
 	.init_hwif	= init_hwif_rz1000,
-	.channels	= 2,
 	.autodma	= NODMA,
 	.bootable	= ON_BOARD,
 };
diff --git a/drivers/ide/pci/sc1200.c b/drivers/ide/pci/sc1200.c
index 523363c93794..7dbc44cc722a 100644
--- a/drivers/ide/pci/sc1200.c
+++ b/drivers/ide/pci/sc1200.c
@@ -471,7 +471,6 @@ 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,
-	.channels	= 2,
 	.autodma	= AUTODMA,
 	.bootable	= ON_BOARD,
 };
diff --git a/drivers/ide/pci/scc_pata.c b/drivers/ide/pci/scc_pata.c
index fd4b1a24ecab..a1954d1c2879 100644
--- a/drivers/ide/pci/scc_pata.c
+++ b/drivers/ide/pci/scc_pata.c
@@ -772,9 +772,9 @@ static void __devinit init_hwif_scc(ide_hwif_t *hwif)
       .init_setup	= init_setup_scc,		\
       .init_iops	= init_iops_scc,		\
       .init_hwif	= init_hwif_scc,		\
-      .channels	= 1,					\
       .autodma	= AUTODMA,				\
       .bootable	= ON_BOARD,				\
+      .host_flags	= IDE_HFLAG_SINGLE,		\
   }
 
 static ide_pci_device_t scc_chipsets[] __devinitdata = {
diff --git a/drivers/ide/pci/serverworks.c b/drivers/ide/pci/serverworks.c
index ed04e0c8dd4c..809deb92bc11 100644
--- a/drivers/ide/pci/serverworks.c
+++ b/drivers/ide/pci/serverworks.c
@@ -441,9 +441,12 @@ static int __devinit init_setup_csb6 (struct pci_dev *dev, ide_pci_device_t *d)
 			d->bootable = ON_BOARD;
 	}
 
-	d->channels = ((dev->device == PCI_DEVICE_ID_SERVERWORKS_CSB6IDE ||
-			dev->device == PCI_DEVICE_ID_SERVERWORKS_CSB6IDE2) &&
-		       (!(PCI_FUNC(dev->devfn) & 1))) ? 1 : 2;
+	if ((dev->device == PCI_DEVICE_ID_SERVERWORKS_CSB6IDE ||
+	    dev->device == PCI_DEVICE_ID_SERVERWORKS_CSB6IDE2) &&
+	    (!(PCI_FUNC(dev->devfn) & 1)))
+		d->host_flags |= IDE_HFLAG_SINGLE;
+	else
+		d->host_flags &= ~IDE_HFLAG_SINGLE;
 
 	return ide_setup_pci_device(dev, d);
 }
@@ -454,7 +457,6 @@ static ide_pci_device_t serverworks_chipsets[] __devinitdata = {
 		.init_setup	= init_setup_svwks,
 		.init_chipset	= init_chipset_svwks,
 		.init_hwif	= init_hwif_svwks,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.bootable	= ON_BOARD,
 	},{	/* 1 */
@@ -462,7 +464,6 @@ static ide_pci_device_t serverworks_chipsets[] __devinitdata = {
 		.init_setup	= init_setup_svwks,
 		.init_chipset	= init_chipset_svwks,
 		.init_hwif	= init_hwif_svwks,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.bootable	= ON_BOARD,
 	},{	/* 2 */
@@ -470,7 +471,6 @@ static ide_pci_device_t serverworks_chipsets[] __devinitdata = {
 		.init_setup	= init_setup_csb6,
 		.init_chipset	= init_chipset_svwks,
 		.init_hwif	= init_hwif_svwks,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.bootable	= ON_BOARD,
 	},{	/* 3 */
@@ -478,17 +478,17 @@ static ide_pci_device_t serverworks_chipsets[] __devinitdata = {
 		.init_setup	= init_setup_csb6,
 		.init_chipset	= init_chipset_svwks,
 		.init_hwif	= init_hwif_svwks,
-		.channels	= 1,	/* 2 */
 		.autodma	= AUTODMA,
 		.bootable	= ON_BOARD,
+		.host_flags	= IDE_HFLAG_SINGLE,
 	},{	/* 4 */
 		.name		= "SvrWks HT1000",
 		.init_setup	= init_setup_svwks,
 		.init_chipset	= init_chipset_svwks,
 		.init_hwif	= init_hwif_svwks,
-		.channels	= 1,	/* 2 */
 		.autodma	= AUTODMA,
 		.bootable	= ON_BOARD,
+		.host_flags	= IDE_HFLAG_SINGLE,
 	}
 };
 
diff --git a/drivers/ide/pci/sgiioc4.c b/drivers/ide/pci/sgiioc4.c
index d396b2929ed8..ed983b56b4e2 100644
--- a/drivers/ide/pci/sgiioc4.c
+++ b/drivers/ide/pci/sgiioc4.c
@@ -724,10 +724,10 @@ static ide_pci_device_t sgiioc4_chipset __devinitdata = {
 	 .name = "SGIIOC4",
 	 .init_hwif = ide_init_sgiioc4,
 	 .init_dma = ide_dma_sgiioc4,
-	 .channels = 1,
 	 .autodma = AUTODMA,
 	 /* SGI IOC4 doesn't have enablebits. */
 	 .bootable = ON_BOARD,
+	 .host_flags = IDE_HFLAG_SINGLE,
 };
 
 int
diff --git a/drivers/ide/pci/siimage.c b/drivers/ide/pci/siimage.c
index 5304fc5c616a..47b9b94afe05 100644
--- a/drivers/ide/pci/siimage.c
+++ b/drivers/ide/pci/siimage.c
@@ -957,7 +957,6 @@ static void __devinit init_hwif_siimage(ide_hwif_t *hwif)
 		.init_iops	= init_iops_siimage,	\
 		.init_hwif	= init_hwif_siimage,	\
 		.fixup		= siimage_fixup,	\
-		.channels	= 2,			\
 		.autodma	= AUTODMA,		\
 		.bootable	= ON_BOARD,		\
 	}
diff --git a/drivers/ide/pci/sis5513.c b/drivers/ide/pci/sis5513.c
index 756a9b6eb462..bbc502087578 100644
--- a/drivers/ide/pci/sis5513.c
+++ b/drivers/ide/pci/sis5513.c
@@ -878,7 +878,6 @@ static ide_pci_device_t sis5513_chipset __devinitdata = {
 	.name		= "SIS5513",
 	.init_chipset	= init_chipset_sis5513,
 	.init_hwif	= init_hwif_sis5513,
-	.channels	= 2,
 	.autodma	= NOAUTODMA,
 	.enablebits	= {{0x4a,0x02,0x02}, {0x4a,0x04,0x04}},
 	.bootable	= ON_BOARD,
diff --git a/drivers/ide/pci/sl82c105.c b/drivers/ide/pci/sl82c105.c
index f2156ee7e2bd..f4637d29aaf5 100644
--- a/drivers/ide/pci/sl82c105.c
+++ b/drivers/ide/pci/sl82c105.c
@@ -453,7 +453,6 @@ static ide_pci_device_t sl82c105_chipset __devinitdata = {
 	.name		= "W82C105",
 	.init_chipset	= init_chipset_sl82c105,
 	.init_hwif	= init_hwif_sl82c105,
-	.channels	= 2,
 	.autodma	= NOAUTODMA,
 	.enablebits	= {{0x40,0x01,0x01}, {0x40,0x10,0x10}},
 	.bootable	= ON_BOARD,
diff --git a/drivers/ide/pci/slc90e66.c b/drivers/ide/pci/slc90e66.c
index 575dbbd8b482..115bcaefc8ee 100644
--- a/drivers/ide/pci/slc90e66.c
+++ b/drivers/ide/pci/slc90e66.c
@@ -214,7 +214,6 @@ static void __devinit init_hwif_slc90e66 (ide_hwif_t *hwif)
 static ide_pci_device_t slc90e66_chipset __devinitdata = {
 	.name		= "SLC90E66",
 	.init_hwif	= init_hwif_slc90e66,
-	.channels	= 2,
 	.autodma	= AUTODMA,
 	.enablebits	= {{0x41,0x80,0x80}, {0x43,0x80,0x80}},
 	.bootable	= ON_BOARD,
diff --git a/drivers/ide/pci/tc86c001.c b/drivers/ide/pci/tc86c001.c
index 8de1f8e22494..1d40b0820f50 100644
--- a/drivers/ide/pci/tc86c001.c
+++ b/drivers/ide/pci/tc86c001.c
@@ -248,9 +248,9 @@ static ide_pci_device_t tc86c001_chipset __devinitdata = {
 	.name		= "TC86C001",
 	.init_chipset	= init_chipset_tc86c001,
 	.init_hwif	= init_hwif_tc86c001,
-	.channels	= 1,
 	.autodma	= AUTODMA,
-	.bootable	= OFF_BOARD
+	.bootable	= OFF_BOARD,
+	.host_flags	= IDE_HFLAG_SINGLE,
 };
 
 static int __devinit tc86c001_init_one(struct pci_dev *dev,
diff --git a/drivers/ide/pci/triflex.c b/drivers/ide/pci/triflex.c
index 35e8c612638f..801314fe3524 100644
--- a/drivers/ide/pci/triflex.c
+++ b/drivers/ide/pci/triflex.c
@@ -129,7 +129,6 @@ static void __devinit init_hwif_triflex(ide_hwif_t *hwif)
 static ide_pci_device_t triflex_device __devinitdata = {
 	.name		= "TRIFLEX",
 	.init_hwif	= init_hwif_triflex,
-	.channels	= 2,
 	.autodma	= AUTODMA,
 	.enablebits	= {{0x80, 0x01, 0x01}, {0x80, 0x02, 0x02}},
 	.bootable	= ON_BOARD,
diff --git a/drivers/ide/pci/trm290.c b/drivers/ide/pci/trm290.c
index cbb1b11119a5..dc4f4e298e00 100644
--- a/drivers/ide/pci/trm290.c
+++ b/drivers/ide/pci/trm290.c
@@ -327,7 +327,6 @@ static void __devinit init_hwif_trm290(ide_hwif_t *hwif)
 static ide_pci_device_t trm290_chipset __devinitdata = {
 	.name		= "TRM290",
 	.init_hwif	= init_hwif_trm290,
-	.channels	= 2,
 	.autodma	= NOAUTODMA,
 	.bootable	= ON_BOARD,
 };
diff --git a/drivers/ide/pci/via82cxxx.c b/drivers/ide/pci/via82cxxx.c
index 27e92fb9f95e..bfc9b67f8c92 100644
--- a/drivers/ide/pci/via82cxxx.c
+++ b/drivers/ide/pci/via82cxxx.c
@@ -498,7 +498,6 @@ static ide_pci_device_t via82cxxx_chipsets[] __devinitdata = {
 		.name		= "VP_IDE",
 		.init_chipset	= init_chipset_via82cxxx,
 		.init_hwif	= init_hwif_via82cxxx,
-		.channels	= 2,
 		.autodma	= NOAUTODMA,
 		.enablebits	= {{0x40,0x02,0x02}, {0x40,0x01,0x01}},
 		.bootable	= ON_BOARD
@@ -506,7 +505,6 @@ static ide_pci_device_t via82cxxx_chipsets[] __devinitdata = {
 		.name		= "VP_IDE",
 		.init_chipset	= init_chipset_via82cxxx,
 		.init_hwif	= init_hwif_via82cxxx,
-		.channels	= 2,
 		.autodma	= AUTODMA,
 		.enablebits	= {{0x00,0x00,0x00}, {0x00,0x00,0x00}},
 		.bootable	= ON_BOARD,