[PATCH v2 03/20] mmc: support embedded data field in mmc_host

[Ohad Ben-Cohen]

Add support to set/get mmc_host private embedded
data.

This is needed to allow software to dynamically
create (and remove) SDIO functions which represents
embedded SDIO devices.

Typically, it will be used to set the context of
a driver that is creating a new SDIO function
(and would then expect to be able to get that context
back upon creation of the new sdio func).

Signed-off-by: Ohad Ben-Cohen <ohad at wizery.com>
---
 include/linux/mmc/host.h |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)

diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index f65913c..80db597 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -209,6 +209,8 @@ struct mmc_host {
 	struct led_trigger	*led;		/* activity led */
 #endif
 
+	void			*embedded_data;
+
 	struct dentry		*debugfs_root;
 
 	unsigned long		private[0] ____cacheline_aligned;
@@ -264,5 +266,15 @@ static inline void mmc_set_disable_delay(struct mmc_host *host,
 	host->disable_delay = disable_delay;
 }
 
+static inline void *mmc_get_embedded_data(struct mmc_host *host)
+{
+	return host->embedded_data;
+}
+
+static inline void mmc_set_embedded_data(struct mmc_host *host, void *data)
+{
+	host->embedded_data = data;
+}
+
 #endif
 
-- 
1.7.0.4