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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel…
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…/git/jbarnes/pci-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
  PCI: ignore bit0 of _OSC return code
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Linus Torvalds committed Nov 13, 2008
2 parents 7b42365 + 2485b86 commit 58e20d8
Showing 1 changed file with 8 additions and 7 deletions.
15 changes: 8 additions & 7 deletions drivers/pci/pci-acpi.c
Original file line number Diff line number Diff line change
Expand Up @@ -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;
Expand Down Expand Up @@ -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");
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