From: Thierry Reding <treding@xxxxxxxxxx>
Similarly to what can be done for device drivers, allow driver-specific
data to be attached to a master. This is necessary for masters whose
device is already bound to by a different driver and therefore cannot be
used to store the driver-specific data.
Signed-off-by: Thierry Reding <treding@xxxxxxxxxx>
---
drivers/base/component.c | 13 +++++++++++++
include/linux/component.h | 3 +++
2 files changed, 16 insertions(+)
diff --git a/drivers/base/component.c b/drivers/base/component.c
index 14fe81bf5ed2..e3693c6d552f 100644
--- a/drivers/base/component.c
+++ b/drivers/base/component.c
@@ -25,6 +25,8 @@ struct master {
const struct component_master_ops *ops;
struct device *dev;
+
+ void *drvdata;
};
struct component {
@@ -53,6 +55,17 @@ static struct master *__master_find(struct device *dev,
return NULL;
}
+void master_set_drvdata(struct master *master, void *data)
+{
+ if (master)
+ master->drvdata = data;
+}
+
+void *master_get_drvdata(struct master *master)
+{
+ return master ? master->drvdata : NULL;
+}
+
/* Attach an unattached component to a master. */
static void component_attach_master(struct master *master, struct component *c)
{
diff --git a/include/linux/component.h b/include/linux/component.h
index 89fe8bb35053..9c2ec9fe48d6 100644
--- a/include/linux/component.h
+++ b/include/linux/component.h
@@ -25,6 +25,9 @@ int component_master_add(struct device *, const struct component_master_ops *);
void component_master_del(struct device *,
const struct component_master_ops *);
+void master_set_drvdata(struct master *, void *);
+void *master_get_drvdata(struct master *);
+
int component_master_add_child(struct master *master,
int (*compare)(struct device *, void *), void *compare_data);
--
1.9.2
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