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path: root/drivers/hv/vmbus_drv.c
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Diffstat (limited to 'drivers/hv/vmbus_drv.c')
-rw-r--r--drivers/hv/vmbus_drv.c16
1 files changed, 10 insertions, 6 deletions
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
index 2352ae481e87..a14f60340bfc 100644
--- a/drivers/hv/vmbus_drv.c
+++ b/drivers/hv/vmbus_drv.c
@@ -43,10 +43,12 @@ static struct acpi_device *hv_acpi_dev;
static struct tasklet_struct msg_dpc;
static struct completion probe_event;
static int irq;
-u64 hyperv_mmio_start;
-EXPORT_SYMBOL_GPL(hyperv_mmio_start);
-u64 hyperv_mmio_size;
-EXPORT_SYMBOL_GPL(hyperv_mmio_size);
+
+struct resource hyperv_mmio = {
+ .name = "hyperv mmio",
+ .flags = IORESOURCE_MEM,
+};
+EXPORT_SYMBOL_GPL(hyperv_mmio);
static int vmbus_exists(void)
{
@@ -902,8 +904,8 @@ static acpi_status vmbus_walk_resources(struct acpi_resource *res, void *ctx)
break;
case ACPI_RESOURCE_TYPE_ADDRESS64:
- hyperv_mmio_start = res->data.address64.minimum;
- hyperv_mmio_size = res->data.address64.address_length;
+ hyperv_mmio.start = res->data.address64.minimum;
+ hyperv_mmio.end = res->data.address64.maximum;
break;
}
@@ -933,6 +935,8 @@ static int vmbus_acpi_add(struct acpi_device *device)
if (ACPI_FAILURE(result))
goto acpi_walk_err;
+ if (hyperv_mmio.start && hyperv_mmio.end)
+ request_resource(&iomem_resource, &hyperv_mmio);
}
ret_val = 0;