We seem to be stuck in a morass of issues surrounding APEI and generic
address structures. I don't know how to cut that Gordian knot, but
here's a possible tiny step forward.
I think we have general agreement that acpi_read() and friends *should*
pay attention to the generic address structure bit_offset, so these patches
add support for it. It's done the same way as in the APEI accessors, so I
hope there's consensus that the semantics are correct.
We believe that today, only APEI uses generic address structures with
non-zero bit_offset (based on the fact that Google doesn't find any
"Unsupported register bit offset" warnings). APEI currently uses its
own accessors, so these patches don't affect it.
---
Bjorn Helgaas (2):
ACPICA: acpi_read: update return value atomically
ACPICA: support Generic Address Structure bit_offset in acpi_read/write
drivers/acpi/acpica/hwregs.c | 32 ++++++++++++++++++++------------
drivers/acpi/acpica/hwxface.c | 17 +++++++++++------
2 files changed, 31 insertions(+), 18 deletions(-)
--
Bjorn
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