Commit 6b0b6285 authored Feb 23, 2009 by Andy Whitcroft Committed by Pierre Ossman Mar 24, 2009

mmc: add MODALIAS linkage for MMC/SD devices



Currently we are using an explicit udev rule to trigger loading of the
mmc-block module when an MMC or SD card is detected:

    SUBSYSTEM=="mmc", RUN+="/sbin/modprobe -Qba mmc-block"

It makes much more sense for the mmc bus driver and the mmc-block module to
share MODALIAS information so that they are linked automatically.

There is no real information of use in the MMC system at the current time.
All devices inserted require us to load the mmc-block device.  Until such
time as useful parameters exist simply reflect the module linkage via
the module alias below:

	mmc:block

Signed-off-by: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>

parent 7de427d0

drivers/mmc/card/block.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -41,6 +41,8 @@

		#include "queue.h"

		MODULE_ALIAS("mmc:block");

		/*
		* max 8 partitions per card
		*/

drivers/mmc/core/bus.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -84,6 +84,14 @@ mmc_bus_uevent(struct device dev, struct kobj_uevent_env env)
		}

		retval = add_uevent_var(env, "MMC_NAME=%s", mmc_card_name(card));
		if (retval)
		return retval;

		/*
		* Request the mmc_block device. Note: that this is a direct request
		* for the module it carries no information as to what is inserted.
		*/
		retval = add_uevent_var(env, "MODALIAS=mmc:block");

		return retval;
		}