Also a direct acpi_lid_open() call seems a bit iffy. But I guess if
someone needs this to work on non-ACPI system they get to figure out
how to abstract it better. acpi_lid_open() does seem to return != 0
when ACPI is not supported, so at least it would err on the side
of enabling everything.
Thanks. I was going to comment, but you got it first. I think a proper
implementation should check for SW_LID input device instead of simply
using acpi_lid_open(). This will handle the issue for other,
non-ACPI-based laptops.
Can you suggest how this would actually work? AFAICT the only way to
discover if input devices support SW_LID would be to iterate all the
input devices in the kernel and look for whether ->swbit has SW_LID set.
This then turns into a dependency problem of whether any myriad of
drivers have started to report SW_LID. It's also a state machine
problem because other drivers can be unloaded at will.
And then what do you if more than one sets SW_LID?
IOW - a lot of complexity for a non-ACPI system. Does such a problem
exist in non-ACPI systems?
