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Message-Id: <20200131103836.14312-7-nsaenzjulienne@suse.de>
Date: Fri, 31 Jan 2020 11:38:22 +0100
From: Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
To: gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org
Cc: linux-rpi-kernel@...ts.infradead.org,
Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
bcm-kernel-feedback-list@...adcom.com,
linux-arm-kernel@...ts.infradead.org, devel@...verdev.osuosl.org
Subject: [PATCH v2 06/21] staging: vc04_services: get rid of vchiq_platform_use_suspend_timer()
The function always returns 0, delete the function and all code
conditional to it, namely the suspend timer.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@...e.de>
---
Changes since v1:
- Don't delete vchiq_dump_service_use_state()
.../interface/vchiq_arm/vchiq_2835_arm.c | 11 ---
.../interface/vchiq_arm/vchiq_arm.c | 83 ++-----------------
.../interface/vchiq_arm/vchiq_arm.h | 9 --
3 files changed, 5 insertions(+), 98 deletions(-)
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
index ca30bfd52919..1ffb2aea947c 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
@@ -284,17 +284,6 @@ vchiq_platform_videocore_wanted(struct vchiq_state *state)
{
return 1; // autosuspend not supported - videocore always wanted
}
-
-int
-vchiq_platform_use_suspend_timer(void)
-{
- return 0;
-}
-void
-vchiq_dump_platform_use_state(struct vchiq_state *state)
-{
- vchiq_log_info(vchiq_arm_log_level, "Suspend timer not in use");
-}
void
vchiq_platform_handle_timeout(struct vchiq_state *state)
{
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
index 4545df573c90..2dfa5793d83b 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
@@ -48,9 +48,6 @@
int vchiq_arm_log_level = VCHIQ_LOG_DEFAULT;
int vchiq_susp_log_level = VCHIQ_LOG_ERROR;
-#define SUSPEND_TIMER_TIMEOUT_MS 100
-#define SUSPEND_RETRY_TIMER_TIMEOUT_MS 1000
-
#define VC_SUSPEND_NUM_OFFSET 3 /* number of values before idle which are -ve */
static const char *const suspend_state_names[] = {
"VC_SUSPEND_FORCE_CANCELED",
@@ -79,8 +76,6 @@ static const char *const resume_state_names[] = {
* requested */
#define FORCE_SUSPEND_TIMEOUT_MS 200
-static void suspend_timer_callback(struct timer_list *t);
-
struct user_service {
struct vchiq_service *service;
void *userdata;
@@ -2384,12 +2379,7 @@ vchiq_arm_init_state(struct vchiq_state *state,
* completion while videocore is suspended. */
set_resume_state(arm_state, VC_RESUME_RESUMED);
- arm_state->suspend_timer_timeout = SUSPEND_TIMER_TIMEOUT_MS;
- arm_state->suspend_timer_running = 0;
arm_state->state = state;
- timer_setup(&arm_state->suspend_timer, suspend_timer_callback,
- 0);
-
arm_state->first_connect = 0;
}
@@ -2517,27 +2507,6 @@ set_resume_state(struct vchiq_arm_state *arm_state,
}
}
-/* should be called with the write lock held */
-inline void
-start_suspend_timer(struct vchiq_arm_state *arm_state)
-{
- del_timer(&arm_state->suspend_timer);
- arm_state->suspend_timer.expires = jiffies +
- msecs_to_jiffies(arm_state->suspend_timer_timeout);
- add_timer(&arm_state->suspend_timer);
- arm_state->suspend_timer_running = 1;
-}
-
-/* should be called with the write lock held */
-static inline void
-stop_suspend_timer(struct vchiq_arm_state *arm_state)
-{
- if (arm_state->suspend_timer_running) {
- del_timer(&arm_state->suspend_timer);
- arm_state->suspend_timer_running = 0;
- }
-}
-
static inline int
need_resume(struct vchiq_state *state)
{
@@ -2626,28 +2595,6 @@ vchiq_platform_check_suspend(struct vchiq_state *state)
return;
}
-void
-vchiq_check_suspend(struct vchiq_state *state)
-{
- struct vchiq_arm_state *arm_state = vchiq_platform_get_arm_state(state);
-
- if (!arm_state)
- goto out;
-
- vchiq_log_trace(vchiq_susp_log_level, "%s", __func__);
-
- write_lock_bh(&arm_state->susp_res_lock);
- if (arm_state->vc_suspend_state != VC_SUSPEND_SUSPENDED &&
- arm_state->first_connect &&
- !vchiq_videocore_wanted(state)) {
- vchiq_arm_vcsuspend(state);
- }
- write_unlock_bh(&arm_state->susp_res_lock);
-
-out:
- vchiq_log_trace(vchiq_susp_log_level, "%s exit", __func__);
-}
-
/* This function should be called with the write lock held */
int
vchiq_check_resume(struct vchiq_state *state)
@@ -2702,9 +2649,6 @@ vchiq_use_internal(struct vchiq_state *state, struct vchiq_service *service,
}
write_lock_bh(&arm_state->susp_res_lock);
-
- stop_suspend_timer(arm_state);
-
local_uc = ++arm_state->videocore_use_count;
local_entity_uc = ++(*entity_uc);
@@ -2799,15 +2743,11 @@ vchiq_release_internal(struct vchiq_state *state, struct vchiq_service *service)
--(*entity_uc);
if (!vchiq_videocore_wanted(state)) {
- if (vchiq_platform_use_suspend_timer()) {
- start_suspend_timer(arm_state);
- } else {
- vchiq_log_info(vchiq_susp_log_level,
- "%s %s count %d, state count %d - suspending",
- __func__, entity, *entity_uc,
- arm_state->videocore_use_count);
- vchiq_arm_vcsuspend(state);
- }
+ vchiq_log_info(vchiq_susp_log_level,
+ "%s %s count %d, state count %d - suspending",
+ __func__, entity, *entity_uc,
+ arm_state->videocore_use_count);
+ vchiq_arm_vcsuspend(state);
} else
vchiq_log_trace(vchiq_susp_log_level,
"%s %s count %d, state count %d",
@@ -2902,17 +2842,6 @@ vchiq_instance_set_trace(struct vchiq_instance *instance, int trace)
instance->trace = (trace != 0);
}
-static void suspend_timer_callback(struct timer_list *t)
-{
- struct vchiq_arm_state *arm_state =
- from_timer(arm_state, t, suspend_timer);
- struct vchiq_state *state = arm_state->state;
-
- vchiq_log_info(vchiq_susp_log_level,
- "%s - suspend timer expired - check suspend", __func__);
- vchiq_check_suspend(state);
-}
-
enum vchiq_status
vchiq_use_service(unsigned int handle)
{
@@ -3028,8 +2957,6 @@ vchiq_dump_service_use_state(struct vchiq_state *state)
"--- Overall vchiq instance use count %d", vc_use_count);
kfree(service_data);
-
- vchiq_dump_platform_use_state(state);
}
enum vchiq_status
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.h b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.h
index 35889a65b17f..61c50d7d4396 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.h
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.h
@@ -54,9 +54,6 @@ struct vchiq_arm_state {
enum vc_resume_status vc_resume_state;
struct vchiq_state *state;
- struct timer_list suspend_timer;
- int suspend_timer_timeout;
- int suspend_timer_running;
/* Global use count for videocore.
** This is equal to the sum of the use counts for all services. When
@@ -121,9 +118,6 @@ vchiq_platform_suspend(struct vchiq_state *state);
extern int
vchiq_platform_videocore_wanted(struct vchiq_state *state);
-extern int
-vchiq_platform_use_suspend_timer(void);
-
extern void
vchiq_dump_platform_use_state(struct vchiq_state *state);
@@ -166,7 +160,4 @@ extern void
set_resume_state(struct vchiq_arm_state *arm_state,
enum vc_resume_status new_state);
-extern void
-start_suspend_timer(struct vchiq_arm_state *arm_state);
-
#endif /* VCHIQ_ARM_H */
--
2.25.0
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