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staging: vchiq_arm: pass vchiq instance to service callbacks

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In order to remove the 'vchiq_states' global array, we need to pass the
vchiq_instance reference to the 'handle_to_service' function, as well as
to all functions that call 'handle_to_service'. This will allow
accessing the vchiq state through the vchiq instance instead of through
the global array.

'handle_to_service' is called by 'service_callback'. Therefore, pass the
vchiq instance reference to 'service_callback'. This also requires
adding the vchiq instance reference to the service callbacks prototype,
and update all other callbacks accordingly.

Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Adrien Thierry <athierry@redhat.com>
Link: https://lore.kernel.org/r/20220518191126.60396-4-athierry@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Adrien Thierry 2022-05-18 15:11:14 -04:00 committed by Greg Kroah-Hartman
parent 813fa44c74
commit 726e79f8a6
6 changed files with 18 additions and 12 deletions
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3
drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c
View file

@ -89,7 +89,8 @@ static int bcm2835_audio_send_simple(struct bcm2835_audio_instance *instance,
return bcm2835_audio_send_msg(instance, &m, wait);
}
static enum vchiq_status audio_vchi_callback(enum vchiq_reason reason,
static enum vchiq_status audio_vchi_callback(struct vchiq_instance *vchiq_instance,
enum vchiq_reason reason,
struct vchiq_header *header,
unsigned int handle, void *userdata)
{

8
drivers/staging/vc04_services/include/linux/raspberrypi/vchiq.h
View file

@ -53,9 +53,12 @@ struct vchiq_element {
unsigned int size;
};
struct vchiq_instance;
struct vchiq_service_base {
int fourcc;
enum vchiq_status (*callback)(enum vchiq_reason reason,
enum vchiq_status (*callback)(struct vchiq_instance *instance,
enum vchiq_reason reason,
struct vchiq_header *header,
unsigned int handle,
void *bulk_userdata);
@ -71,7 +74,8 @@ struct vchiq_completion_data_kernel {
struct vchiq_service_params_kernel {
int fourcc;
enum vchiq_status (*callback)(enum vchiq_reason reason,
enum vchiq_status (*callback)(struct vchiq_instance *instance,
enum vchiq_reason reason,
struct vchiq_header *header,
unsigned int handle,
void *bulk_userdata);

9
drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
View file

@ -1041,8 +1041,8 @@ add_completion(struct vchiq_instance *instance, enum vchiq_reason reason,
}
enum vchiq_status
service_callback(enum vchiq_reason reason, struct vchiq_header *header,
unsigned int handle, void *bulk_userdata)
service_callback(struct vchiq_instance *instance, enum vchiq_reason reason,
struct vchiq_header *header, unsigned int handle, void *bulk_userdata)
{
/*
* How do we ensure the callback goes to the right client?
@ -1052,7 +1052,6 @@ service_callback(enum vchiq_reason reason, struct vchiq_header *header,
*/
struct user_service *user_service;
struct vchiq_service *service;
struct vchiq_instance *instance;
bool skip_completion = false;
DEBUG_INITIALISE(g_state.local);
@ -1067,7 +1066,6 @@ service_callback(enum vchiq_reason reason, struct vchiq_header *header,
}
user_service = (struct user_service *)service->base.userdata;
instance = user_service->instance;
if (!instance || instance->closing) {
rcu_read_unlock();
@ -1313,7 +1311,8 @@ vchiq_get_state(void)
*/
static enum vchiq_status
vchiq_keepalive_vchiq_callback(enum vchiq_reason reason,
vchiq_keepalive_vchiq_callback(struct vchiq_instance *instance,
enum vchiq_reason reason,
struct vchiq_header *header,
unsigned int service_user, void *bulk_user)
{

4
drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.h
View file

@ -138,8 +138,8 @@ static inline int vchiq_register_chrdev(struct device *parent) { return 0; }
#endif /* IS_ENABLED(CONFIG_VCHIQ_CDEV) */
extern enum vchiq_status
service_callback(enum vchiq_reason reason, struct vchiq_header *header,
unsigned int handle, void *bulk_userdata);
service_callback(struct vchiq_instance *vchiq_instance, enum vchiq_reason reason,
struct vchiq_header *header, unsigned int handle, void *bulk_userdata);
extern void
free_bulk_waiter(struct vchiq_instance *instance);

3
drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c
View file

@ -466,7 +466,8 @@ make_service_callback(struct vchiq_service *service, enum vchiq_reason reason,
vchiq_log_trace(vchiq_core_log_level, "%d: callback:%d (%s, %pK, %pK)",
service->state->id, service->localport, reason_names[reason],
header, bulk_userdata);
status = service->base.callback(reason, header, service->handle, bulk_userdata);
status = service->base.callback(service->instance, reason, header, service->handle,
bulk_userdata);
if (status == VCHIQ_ERROR) {
vchiq_log_warning(vchiq_core_log_level,
"%d: ignoring ERROR from callback to service %x",

3
drivers/staging/vc04_services/vchiq-mmal/mmal-vchiq.c
View file

@ -548,7 +548,8 @@ static void bulk_abort_cb(struct vchiq_mmal_instance *instance,
}
/* incoming event service callback */
static enum vchiq_status service_callback(enum vchiq_reason reason,
static enum vchiq_status service_callback(struct vchiq_instance *vchiq_instance,
enum vchiq_reason reason,
struct vchiq_header *header,
unsigned int handle, void *bulk_ctx)
{