ide_arm: manage I/O resources in driver

* Tell IDE layer to not manage resources by setting hwif->mmio flag.

* Use {request,release}_region() for resources management.

* Use driver name for resources management.

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

diff --git a/drivers/ide/arm/ide_arm.c b/drivers/ide/arm/ide_arm.c
index 82643df..a05d3df 100644 (file)
--- a/drivers/ide/arm/ide_arm.c
+++ b/drivers/ide/arm/ide_arm.c
@@ -14,6 +14,8 @@
 #include <asm/mach-types.h>
 #include <asm/irq.h>
 
+#define DRV_NAME "ide_arm"
+
 #ifdef CONFIG_ARCH_CLPS7500
 # include <asm/arch/hardware.h>
 #
@@ -28,15 +30,30 @@ static int __init ide_arm_init(void)
 {
        ide_hwif_t *hwif;
        hw_regs_t hw;
+       unsigned long base = IDE_ARM_IO, ctl = IDE_ARM_IO + 0x206;
        u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
 
+       if (!request_region(base, 8, DRV_NAME)) {
+               printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
+                               DRV_NAME, base, base + 7);
+               return -EBUSY;
+       }
+
+       if (!request_region(ctl, 1, DRV_NAME)) {
+               printk(KERN_ERR "%s: I/O resource 0x%lX not free.\n",
+                               DRV_NAME, ctl);
+               release_region(base, 8);
+               return -EBUSY;
+       }
+
        memset(&hw, 0, sizeof(hw));
-       ide_std_init_ports(&hw, IDE_ARM_IO, IDE_ARM_IO + 0x206);
+       ide_std_init_ports(&hw, base, ctl);
        hw.irq = IDE_ARM_IRQ;
 
        hwif = ide_find_port();
        if (hwif) {
                ide_init_port_hw(hwif, &hw);
+               hwif->mmio = 1;
                idx[0] = hwif->index;
 
                ide_device_add(idx, NULL);