Re: [PATCH V14 8/9] vfio, platform: add support for ACPI while detecting the reset driver

From: Sinan Kaya
Date: Tue Mar 08 2016 - 00:11:10 EST

On 3/7/2016 11:46 PM, Eric Auger wrote:
>> #define module_vfio_reset_handler(compat, acpihid, reset) \
>> > MODULE_ALIAS("vfio-reset: dt: " compat); \
>> > MODULE_ALIAS("vfio-reset: acpi: " acpihid); \
> My gut feeling is we must not create a dummy alias when the mode
> (dt/acpi) is not supported/tested. It fills the modinfo section with
> spurious data, aliases are visible to modinfo, ...
> So I personally foresee 2 solutions,
> 1) we create a single alias using acpihid if supported or compat if not.
> Then even in dt mode we try to load this module through the acpihid
> alias. Looks weird but should work.
> 2) We simply move the module alias declaration out of this macro (to the
> reset module itself), define 2 aliases in case both dt and acpi are
> supported & tested.
> My personal preference is 2 I think.
> Best Regards
> Eric

I agree with your assessment of #2. We are trying to be too smart.
I'll post a patch with #2 solution.

Sinan Kaya
Qualcomm Technologies, Inc. on behalf of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project