[RFCv3 07/17] v4l2-ctrls: prepare internal structs for request API

[Alexandre Courbot]

From: Hans Verkuil 

Add a refcount and is_request bool to struct v4l2_ctrl_handler:
this is used to refcount a handler that represents a request.

Add a p_req field to struct v4l2_ctrl_ref that will store the
request value.

Signed-off-by: Hans Verkuil 
Signed-off-by: Alexandre Courbot 
---
 drivers/media/v4l2-core/v4l2-ctrls.c | 1 +
 include/media/v4l2-ctrls.h   | 4 
 2 files changed, 5 insertions(+)

diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c 
b/drivers/media/v4l2-core/v4l2-ctrls.c
index 2e58381444d1..1ff8fc59fff5 100644
--- a/drivers/media/v4l2-core/v4l2-ctrls.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls.c
@@ -1761,6 +1761,7 @@ int v4l2_ctrl_handler_init_class(struct v4l2_ctrl_handler 
*hdl,
  sizeof(hdl->buckets[0]),
  GFP_KERNEL | __GFP_ZERO);
hdl->error = hdl->buckets ? 0 : -ENOMEM;
+   hdl->is_request = false;
return hdl->error;
 }
 EXPORT_SYMBOL(v4l2_ctrl_handler_init_class);
diff --git a/include/media/v4l2-ctrls.h b/include/media/v4l2-ctrls.h
index a4750a8090e3..22b6be78057f 100644
--- a/include/media/v4l2-ctrls.h
+++ b/include/media/v4l2-ctrls.h
@@ -18,6 +18,7 @@
 #define _V4L2_CTRLS_H
 
 #include 
+#include 
 #include 
 #include 
 
@@ -257,6 +258,7 @@ struct v4l2_ctrl_ref {
struct v4l2_ctrl_ref *next;
struct v4l2_ctrl *ctrl;
struct v4l2_ctrl_helper *helper;
+   union v4l2_ctrl_ptr p_req;
bool from_other_dev;
 };
 
@@ -292,7 +294,9 @@ struct v4l2_ctrl_handler {
v4l2_ctrl_notify_fnc notify;
void *notify_priv;
u16 nr_of_buckets;
+   bool is_request;
int error;
+   struct kref ref;
 };
 
 /**
-- 
2.16.0.rc1.238.g530d649a79-goog

[RFCv3 07/17] v4l2-ctrls: prepare internal structs for request API

[Alexandre Courbot]

From: Hans Verkuil 

Add a refcount and is_request bool to struct v4l2_ctrl_handler:
this is used to refcount a handler that represents a request.

Add a p_req field to struct v4l2_ctrl_ref that will store the
request value.

Signed-off-by: Hans Verkuil 
Signed-off-by: Alexandre Courbot 
---
 drivers/media/v4l2-core/v4l2-ctrls.c | 1 +
 include/media/v4l2-ctrls.h   | 4 
 2 files changed, 5 insertions(+)

diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c 
b/drivers/media/v4l2-core/v4l2-ctrls.c
index 2e58381444d1..1ff8fc59fff5 100644
--- a/drivers/media/v4l2-core/v4l2-ctrls.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls.c
@@ -1761,6 +1761,7 @@ int v4l2_ctrl_handler_init_class(struct v4l2_ctrl_handler 
*hdl,
  sizeof(hdl->buckets[0]),
  GFP_KERNEL | __GFP_ZERO);
hdl->error = hdl->buckets ? 0 : -ENOMEM;
+   hdl->is_request = false;
return hdl->error;
 }
 EXPORT_SYMBOL(v4l2_ctrl_handler_init_class);
diff --git a/include/media/v4l2-ctrls.h b/include/media/v4l2-ctrls.h
index a4750a8090e3..22b6be78057f 100644
--- a/include/media/v4l2-ctrls.h
+++ b/include/media/v4l2-ctrls.h
@@ -18,6 +18,7 @@
 #define _V4L2_CTRLS_H
 
 #include 
+#include 
 #include 
 #include 
 
@@ -257,6 +258,7 @@ struct v4l2_ctrl_ref {
struct v4l2_ctrl_ref *next;
struct v4l2_ctrl *ctrl;
struct v4l2_ctrl_helper *helper;
+   union v4l2_ctrl_ptr p_req;
bool from_other_dev;
 };
 
@@ -292,7 +294,9 @@ struct v4l2_ctrl_handler {
v4l2_ctrl_notify_fnc notify;
void *notify_priv;
u16 nr_of_buckets;
+   bool is_request;
int error;
+   struct kref ref;
 };
 
 /**
-- 
2.16.0.rc1.238.g530d649a79-goog