Re: [PATCH 1/1] mmc: add MODALIAS linkage for MMC/SD devices

From: Kay Sievers
Date: Sun Jan 25 2009 - 11:00:27 EST

On Sun, Jan 25, 2009 at 16:48, Pierre Ossman <drzeus-mmc@xxxxxxxxx> wrote:
> On Sun, 25 Jan 2009 00:45:46 +0100
> Kay Sievers <kay.sievers@xxxxxxxx> wrote:
>> On Sat, Jan 24, 2009 at 18:56, Pierre Ossman <drzeus-mmc@xxxxxxxxx> wrote:
>> >
>> > Well, as long as we're on the track of temporary hack, we might as well
>> > just export "mmc_block" as the modalias. Or would there be any
>> > side-effects to that?
>> The common format is to prefix with "<subsystem>:". Something like
>> "mmc:block" sounds fine to me.
> My point was to have the kernel explicitly ask for the module it wants
> as there is no decent device to driver mapping scheme.

Yep, which is what we do not want. Aliases are "aliases", and not
"module names". We need to add a matching alias to the module then.
Direct module names can not properly defined/blacklisted in userspace,
and we would need to work around that.
Every modalias should be
"<subsystem>:<whatever-name-fits-for-the-subsystem>" to plug properly
into the autoloading infrastructure. We rather have no modalias at
all, then a kernel module name there.

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