ide: merge ide_arm and ide_generic host drivers

There is no need for a separate ide_arm host driver nowadays
so merge it into ide_generic one.

While at it:
- return -EBUSY from ide_generic_init() if I/O resources are busy
- scale down ide_generic_check_pci_legacy_iobases() for CONFIG_PCI=n

Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Alexander Schulz <alex@shark-linux.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

1 files changed, 13 insertions, 5 deletions

diff --git a/drivers/ide/ide-generic.c b/drivers/ide/ide-generic.c
index 3a93e4c41bf7..7812ca0be13b 100644
--- a/drivers/ide/ide-generic.c
+++ b/drivers/ide/ide-generic.c
@@ -13,7 +13,10 @@
 #include <linux/ide.h>
 #include <linux/pci_ids.h>
 
-/* FIXME: convert m32r to use ide_platform host driver */
+/* FIXME: convert arm and m32r to use ide_platform host driver */
+#ifdef CONFIG_ARM
+#include <asm/irq.h>
+#endif
 #ifdef CONFIG_M32R
 #include <asm/m32r.h>
 #endif
@@ -28,8 +31,11 @@ static const struct ide_port_info ide_generic_port_info = {
         .host_flags             = IDE_HFLAG_NO_DMA,
 };
 
-#if defined(CONFIG_PLAT_M32700UT) || defined(CONFIG_PLAT_MAPPI2) \
-        || defined(CONFIG_PLAT_OPSPUT)
+#ifdef CONFIG_ARM
+static const u16 legacy_bases[] = { 0x1f0 };
+static const int legacy_irqs[]  = { IRQ_HARDDISK };
+#elif defined(CONFIG_PLAT_M32700UT) || defined(CONFIG_PLAT_MAPPI2) || \
+      defined(CONFIG_PLAT_OPSPUT)
 static const u16 legacy_bases[] = { 0x1f0 };
 static const int legacy_irqs[]  = { PLD_IRQ_CFIREQ };
 #elif defined(CONFIG_PLAT_MAPPI3)
@@ -45,11 +51,11 @@ static const int legacy_irqs[]  = { 14, 15, 11, 10, 8, 12 };
 
 static void ide_generic_check_pci_legacy_iobases(int *primary, int *secondary)
 {
+#ifdef CONFIG_PCI
         struct pci_dev *p = NULL;
         u16 val;
 
         for_each_pci_dev(p) {
-
                 if (pci_resource_start(p, 0) == 0x1f0)
                         *primary = 1;
                 if (pci_resource_start(p, 2) == 0x170)
@@ -64,7 +70,6 @@ static void ide_generic_check_pci_legacy_iobases(int *primary, int *secondary)
                 /* Intel MPIIX - PIO ATA on non PCI side of bridge */
                 if (p->vendor == PCI_VENDOR_ID_INTEL &&
                     p->device == PCI_DEVICE_ID_INTEL_82371MX) {
-
                         pci_read_config_word(p, 0x6C, &val);
                         if (val & 0x8000) {
                                 /* ATA port enabled */
@@ -75,6 +80,7 @@ static void ide_generic_check_pci_legacy_iobases(int *primary, int *secondary)
                         }
                 }
         }
+#endif
 }
 
 static int __init ide_generic_init(void)
@@ -106,6 +112,7 @@ static int __init ide_generic_init(void)
                                 printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX "
                                                 "not free.\n",
                                                 DRV_NAME, io_addr, io_addr + 7);
+                                rc = -EBUSY;
                                 continue;
                         }
 
@@ -114,6 +121,7 @@ static int __init ide_generic_init(void)
                                                 "not free.\n",
                                                 DRV_NAME, io_addr + 0x206);
                                 release_region(io_addr, 8);
+                                rc = -EBUSY;
                                 continue;
                         }