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[media] media: lirc_dev: introduce lirc_allocate_device and lirc_free_device 

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>
This commit is contained in:
David Härdeman 2017-06-25 09:32:15 -03:00 committed by Mauro Carvalho Chehab
parent 5ddc9c098d
commit 6ecccc379b
3 changed files with 18 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/media/rc/ir-lirc-codec.c
View File

@ -347,7 +347,7 @@ static int ir_lirc_register(struct rc_dev *dev)
int rc = -ENOMEM; int rc = -ENOMEM;
unsigned long features = 0; unsigned long features = 0;
ldev = kzalloc(sizeof(*ldev), GFP_KERNEL); ldev = lirc_allocate_device();
if (!ldev) if (!ldev)
return rc; return rc;

13
drivers/media/rc/lirc_dev.c
View File

@ -103,6 +103,19 @@ static int lirc_allocate_buffer(struct irctl *ir)
return err; 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) int lirc_register_device(struct lirc_dev *d)
{ {
struct irctl *ir; struct irctl *ir;

9
include/media/lirc_dev.h
View File

@ -156,11 +156,10 @@ struct lirc_dev {
struct irctl *irctl; struct irctl *irctl;
}; };
/* following functions can be called ONLY from user context struct lirc_dev *lirc_allocate_device(void);
*
* returns negative value on error or zero void lirc_free_device(struct lirc_dev *d);
* contents of the structure pointed by p is copied
*/
int lirc_register_device(struct lirc_dev *d); int lirc_register_device(struct lirc_dev *d);
void lirc_unregister_device(struct lirc_dev *d); void lirc_unregister_device(struct lirc_dev *d);