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ACPI: Altix: cannot register acpi bus driver before bus scan 

SN code to initialize the Hub/TIO infrastructure needs to
execute before bus scanning. This was previously done with
an early call to acpi_bus_register_driver().  But now that
ACPI is using the Linux driver model, a driver cannot be registered
that early. Make changes to have the init routines invoked via
calls to acpi_get_devices().

Signed-off-by: John Keller <jpk@sgi.com>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
John Keller 2007-02-23 16:24:16 -06:00 committed by Len Brown
parent 9654640d0a
commit 690b8d9d54
1 changed files with 22 additions and 22 deletions
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44
arch/ia64/sn/kernel/io_acpi_init.c
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@ -53,12 +53,15 @@ sal_ioif_init(u64 *result)
} }
/* /*
* sn_hubdev_add - The 'add' function of the acpi_sn_hubdev_driver. * sn_acpi_hubdev_init() - This function is called by acpi_ns_get_device_callback()
* Called for every "SGIHUB" or "SGITIO" device defined * for all SGIHUB and SGITIO acpi devices defined in the
* in the ACPI namespace. * DSDT. It obtains the hubdev_info pointer from the
* ACPI vendor resource, which the PROM setup, and sets up the
* hubdev_info in the pda.
*/ */
static int __init
sn_hubdev_add(struct acpi_device *device) static acpi_status __init
sn_acpi_hubdev_init(acpi_handle handle, u32 depth, void *context, void **ret)
{ {
struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
u64 addr; u64 addr;
@ -67,18 +70,19 @@ sn_hubdev_add(struct acpi_device *device)
int i; int i;
u64 nasid; u64 nasid;
struct acpi_resource *resource; struct acpi_resource *resource;
int ret = 0;
acpi_status status; acpi_status status;
struct acpi_resource_vendor_typed *vendor; struct acpi_resource_vendor_typed *vendor;
extern void sn_common_hubdev_init(struct hubdev_info *); extern void sn_common_hubdev_init(struct hubdev_info *);
status = acpi_get_vendor_resource(device->handle, METHOD_NAME__CRS, status = acpi_get_vendor_resource(handle, METHOD_NAME__CRS,
&sn_uuid, &buffer); &sn_uuid, &buffer);
if (ACPI_FAILURE(status)) { if (ACPI_FAILURE(status)) {
printk(KERN_ERR printk(KERN_ERR
"sn_hubdev_add: acpi_get_vendor_resource() failed: %d\n", "sn_acpi_hubdev_init: acpi_get_vendor_resource() "
status); "(0x%x) failed for: ", status);
return 1; acpi_ns_print_node_pathname(handle, NULL);
printk("\n");
return AE_OK; /* Continue walking namespace */
} }
resource = buffer.pointer; resource = buffer.pointer;
@ -86,9 +90,10 @@ sn_hubdev_add(struct acpi_device *device)
if ((vendor->byte_length - sizeof(struct acpi_vendor_uuid)) != if ((vendor->byte_length - sizeof(struct acpi_vendor_uuid)) !=
sizeof(struct hubdev_info *)) { sizeof(struct hubdev_info *)) {
printk(KERN_ERR printk(KERN_ERR
"sn_hubdev_add: Invalid vendor data length: %d\n", "sn_acpi_hubdev_init: Invalid vendor data length: %d for: ",
vendor->byte_length); vendor->byte_length);
ret = 1; acpi_ns_print_node_pathname(handle, NULL);
printk("\n");
goto exit; goto exit;
} }
@ -103,7 +108,7 @@ sn_hubdev_add(struct acpi_device *device)
exit: exit:
kfree(buffer.pointer); kfree(buffer.pointer);
return ret; return AE_OK; /* Continue walking namespace */
} }
/* /*
@ -441,14 +446,6 @@ sn_acpi_slot_fixup(struct pci_dev *dev)
EXPORT_SYMBOL(sn_acpi_slot_fixup); EXPORT_SYMBOL(sn_acpi_slot_fixup);
static struct acpi_driver acpi_sn_hubdev_driver = {
.name = "SGI HUBDEV Driver",
.ids = "SGIHUB,SGITIO",
.ops = {
.add = sn_hubdev_add,
},
};
/* /*
* sn_acpi_bus_fixup - Perform SN specific setup of software structs * sn_acpi_bus_fixup - Perform SN specific setup of software structs
@ -492,7 +489,10 @@ sn_io_acpi_init(void)
/* SN Altix does not follow the IOSAPIC IRQ routing model */ /* SN Altix does not follow the IOSAPIC IRQ routing model */
acpi_irq_model = ACPI_IRQ_MODEL_PLATFORM; acpi_irq_model = ACPI_IRQ_MODEL_PLATFORM;
acpi_bus_register_driver(&acpi_sn_hubdev_driver); /* Setup hubdev_info for all SGIHUB/SGITIO devices */
acpi_get_devices("SGIHUB", sn_acpi_hubdev_init, NULL, NULL);
acpi_get_devices("SGITIO", sn_acpi_hubdev_init, NULL, NULL);
status = sal_ioif_init(&result); status = sal_ioif_init(&result);
if (status || result) if (status || result)
panic("sal_ioif_init failed: [%lx] %s\n", panic("sal_ioif_init failed: [%lx] %s\n",