github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-06-08 14:42:37 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

UPSTREAM: [media] cec: pass parent device in register(), not allocate()

Browse Source 
The cec_allocate_adapter function doesn't need the parent device, only the
cec_register_adapter function needs it.

Drop the cec_devnode parent field, since devnode.dev.parent can be used
instead.

This change makes the framework consistent with other frameworks where the
parent device is not used until the device is registered.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
(cherry picked from commit f51e80804f)

Change-Id: Ib9a26eedf0e07f5964482d8cbb2c4698031d7bd9
Signed-off-by: Nickey Yang <nickey.yang@rock-chips.com>
This commit is contained in:
Hans Verkuil 2016-11-25 06:23:34 -02:00 committed by Tao Huang
parent 680c98ca39
commit ee609c9423
3 changed files with 15 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/media/cec/cec-api.c
View File

@ -88,7 +88,7 @@ static long cec_adap_g_caps(struct cec_adapter *adap,
{
struct cec_caps caps = {};
strlcpy(caps.driver, adap->devnode.parent->driver->name,
strlcpy(caps.driver, adap->devnode.dev.parent->driver->name,
sizeof(caps.driver));
strlcpy(caps.name, adap->name, sizeof(caps.name));
caps.available_log_addrs = adap->available_log_addrs;

18
drivers/media/cec/cec-core.c
View File

@ -132,7 +132,6 @@ static int __must_check cec_devnode_register(struct cec_devnode *devnode,
devnode->dev.bus = &cec_bus_type;
devnode->dev.devt = MKDEV(MAJOR(cec_dev_t), minor);
devnode->dev.release = cec_devnode_release;
devnode->dev.parent = devnode->parent;
dev_set_name(&devnode->dev, "cec%d", devnode->minor);
device_initialize(&devnode->dev);
@ -198,13 +197,11 @@ static void cec_devnode_unregister(struct cec_devnode *devnode)
struct cec_adapter *cec_allocate_adapter(const struct cec_adap_ops *ops,
void *priv, const char *name, u32 caps,
u8 available_las, struct device *parent)
u8 available_las)
{
struct cec_adapter *adap;
int res;
if (WARN_ON(!parent))
return ERR_PTR(-EINVAL);
if (WARN_ON(!caps))
return ERR_PTR(-EINVAL);
if (WARN_ON(!ops))
@ -214,8 +211,6 @@ struct cec_adapter *cec_allocate_adapter(const struct cec_adap_ops *ops,
adap = kzalloc(sizeof(*adap), GFP_KERNEL);
if (!adap)
return ERR_PTR(-ENOMEM);
adap->owner = parent->driver->owner;
adap->devnode.parent = parent;
strlcpy(adap->name, name, sizeof(adap->name));
adap->phys_addr = CEC_PHYS_ADDR_INVALID;
adap->log_addrs.cec_version = CEC_OP_CEC_VERSION_2_0;
@ -264,7 +259,6 @@ struct cec_adapter *cec_allocate_adapter(const struct cec_adap_ops *ops,
adap->rc->input_id.vendor = 0;
adap->rc->input_id.product = 0;
adap->rc->input_id.version = 1;
adap->rc->dev.parent = parent;
adap->rc->driver_type = RC_DRIVER_SCANCODE;
adap->rc->driver_name = CEC_NAME;
adap->rc->allowed_protocols = RC_BIT_CEC;
@ -278,14 +272,22 @@ struct cec_adapter *cec_allocate_adapter(const struct cec_adap_ops *ops,
}
EXPORT_SYMBOL_GPL(cec_allocate_adapter);
int cec_register_adapter(struct cec_adapter *adap)
int cec_register_adapter(struct cec_adapter *adap,
struct device *parent)
{
int res;
if (IS_ERR_OR_NULL(adap))
return 0;
if (WARN_ON(!parent))
return -EINVAL;
adap->owner = parent->driver->owner;
adap->devnode.dev.parent = parent;
#if IS_REACHABLE(CONFIG_RC_CORE)
adap->rc->dev.parent = parent;
if (adap->capabilities & CEC_CAP_RC) {
res = rc_register_device(adap->rc);

10
include/media/cec.h
View File

@ -35,7 +35,6 @@
* struct cec_devnode - cec device node
* @dev: cec device
* @cdev: cec character device
* @parent: parent device
* @minor: device node minor number
* @registered: the device was correctly registered
* @unregistered: the device was unregistered
@ -51,7 +50,6 @@ struct cec_devnode {
/* sysfs */
struct device dev;
struct cdev cdev;
struct device *parent;
/* device info */
int minor;
@ -198,9 +196,8 @@ static inline bool cec_is_sink(const struct cec_adapter *adap)
#if IS_ENABLED(CONFIG_MEDIA_CEC_SUPPORT)
struct cec_adapter *cec_allocate_adapter(const struct cec_adap_ops *ops,
void *priv, const char *name, u32 caps, u8 available_las,
struct device *parent);
int cec_register_adapter(struct cec_adapter *adap);
void *priv, const char *name, u32 caps, u8 available_las);
int cec_register_adapter(struct cec_adapter *adap, struct device *parent);
void cec_unregister_adapter(struct cec_adapter *adap);
void cec_delete_adapter(struct cec_adapter *adap);
@ -218,7 +215,8 @@ void cec_received_msg(struct cec_adapter *adap, struct cec_msg *msg);
#else
static inline int cec_register_adapter(struct cec_adapter *adap)
static inline int cec_register_adapter(struct cec_adapter *adap,
struct device *parent)
{
return 0;
}