From 6ecccc379b7334c02f90a401dafea6fce5c91310 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?David=20H=C3=A4rdeman?= <david@hardeman.nu>
Date: Sun, 25 Jun 2017 09:32:15 -0300
Subject: [PATCH] [media] media: lirc_dev: introduce lirc_allocate_device and
 lirc_free_device
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Introduce two new functions so that the API for lirc_dev matches that
of the rc-core and input subsystems.

This means that lirc_dev structs are managed using the usual four
functions:

lirc_allocate_device
lirc_free_device
lirc_register_device
lirc_unregister_device

The functions are pretty simplistic at this point, later patches will put
more flesh on the bones of both.

Signed-off-by: David Härdeman <david@hardeman.nu>
Signed-off-by: Sean Young <sean@mess.org>
---
 drivers/media/rc/ir-lirc-codec.c |  2 +-
 drivers/media/rc/lirc_dev.c      | 13 +++++++++++++
 include/media/lirc_dev.h         |  9 ++++-----
 3 files changed, 18 insertions(+), 6 deletions(-)

diff --git a/drivers/media/rc/ir-lirc-codec.c b/drivers/media/rc/ir-lirc-codec.c
index 2d591168c991..d5c155a5a547 100644
--- a/drivers/media/rc/ir-lirc-codec.c
+++ b/drivers/media/rc/ir-lirc-codec.c
@@ -347,7 +347,7 @@ static int ir_lirc_register(struct rc_dev *dev)
 	int rc = -ENOMEM;
 	unsigned long features = 0;
 
-	ldev = kzalloc(sizeof(*ldev), GFP_KERNEL);
+	ldev = lirc_allocate_device();
 	if (!ldev)
 		return rc;
 
diff --git a/drivers/media/rc/lirc_dev.c b/drivers/media/rc/lirc_dev.c
index e381a1c04bea..a6005f70de5a 100644
--- a/drivers/media/rc/lirc_dev.c
+++ b/drivers/media/rc/lirc_dev.c
@@ -103,6 +103,19 @@ static int lirc_allocate_buffer(struct irctl *ir)
 	return err;
 }
 
+struct lirc_dev *
+lirc_allocate_device(void)
+{
+	return kzalloc(sizeof(struct lirc_dev), GFP_KERNEL);
+}
+EXPORT_SYMBOL(lirc_allocate_device);
+
+void lirc_free_device(struct lirc_dev *d)
+{
+	kfree(d);
+}
+EXPORT_SYMBOL(lirc_free_device);
+
 int lirc_register_device(struct lirc_dev *d)
 {
 	struct irctl *ir;
diff --git a/include/media/lirc_dev.h b/include/media/lirc_dev.h
index d16d6e0ef8da..4b0dc640e142 100644
--- a/include/media/lirc_dev.h
+++ b/include/media/lirc_dev.h
@@ -156,11 +156,10 @@ struct lirc_dev {
 	struct irctl *irctl;
 };
 
-/* following functions can be called ONLY from user context
- *
- * returns negative value on error or zero
- * contents of the structure pointed by p is copied
- */
+struct lirc_dev *lirc_allocate_device(void);
+
+void lirc_free_device(struct lirc_dev *d);
+
 int lirc_register_device(struct lirc_dev *d);
 
 void lirc_unregister_device(struct lirc_dev *d);