PCI: ignore bit0 of _OSC return code

[safe/jmp/linux-2.6] / drivers / pci / pci-acpi.c

diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c
index b3a63ed..ae5ec76 100644 (file)
--- a/drivers/pci/pci-acpi.c
+++ b/drivers/pci/pci-acpi.c
@@ -63,7 +63,7 @@ static acpi_status acpi_run_osc(acpi_handle handle,
        union acpi_object in_params[4];
        struct acpi_buffer output = {ACPI_ALLOCATE_BUFFER, NULL};
        union acpi_object *out_obj;
-       u32 osc_dw0, flags = osc_args->capbuf[OSC_QUERY_TYPE];
+       u32 errors, flags = osc_args->capbuf[OSC_QUERY_TYPE];
 
        /* Setting up input parameters */
        input.count = 4;
@@ -92,15 +92,16 @@ static acpi_status acpi_run_osc(acpi_handle handle,
                status = AE_TYPE;
                goto out_kfree;
        }
-       osc_dw0 = *((u32 *)out_obj->buffer.pointer);
-       if (osc_dw0) {
-               if (osc_dw0 & OSC_REQUEST_ERROR)
+       /* Need to ignore the bit0 in result code */
+       errors = *((u32 *)out_obj->buffer.pointer) & ~(1 << 0);
+       if (errors) {
+               if (errors & OSC_REQUEST_ERROR)
                        printk(KERN_DEBUG "_OSC request fails\n"); 
-               if (osc_dw0 & OSC_INVALID_UUID_ERROR)
+               if (errors & OSC_INVALID_UUID_ERROR)
                        printk(KERN_DEBUG "_OSC invalid UUID\n"); 
-               if (osc_dw0 & OSC_INVALID_REVISION_ERROR)
+               if (errors & OSC_INVALID_REVISION_ERROR)
                        printk(KERN_DEBUG "_OSC invalid revision\n"); 
-               if (osc_dw0 & OSC_CAPABILITIES_MASK_ERROR) {
+               if (errors & OSC_CAPABILITIES_MASK_ERROR) {
                        if (flags & OSC_QUERY_ENABLE)
                                goto out_success;
                        printk(KERN_DEBUG "_OSC FW not grant req. control\n");