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staging: vc04_services: Remove vchiq_arm_force_suspend()

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Remove unused function vchiq_arm_force_suspend.
Issue found with Coccinelle.

Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Nishka Dasgupta 2019-06-25 23:47:03 +05:30 committed by Greg Kroah-Hartman
parent 49bc145285
commit 248a58a3d7
2 changed files with 0 additions and 123 deletions
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120
drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.c
View file

@ -2741,126 +2741,6 @@ output_timeout_error(struct vchiq_state *state)
}
/* Try to get videocore into suspended state, regardless of autosuspend state.
** We don't actually force suspend, since videocore may get into a bad state
** if we force suspend at a bad time. Instead, we wait for autosuspend to
** determine a good point to suspend. If this doesn't happen within 100ms we
** report failure.
**
** Returns VCHIQ_SUCCESS if videocore suspended successfully, VCHIQ_RETRY if
** videocore failed to suspend in time or VCHIQ_ERROR if interrupted.
*/
VCHIQ_STATUS_T
vchiq_arm_force_suspend(struct vchiq_state *state)
{
struct vchiq_arm_state *arm_state = vchiq_platform_get_arm_state(state);
VCHIQ_STATUS_T status = VCHIQ_ERROR;
long rc = 0;
int repeat = -1;
if (!arm_state)
goto out;
vchiq_log_trace(vchiq_susp_log_level, "%s", __func__);
write_lock_bh(&arm_state->susp_res_lock);
status = block_resume(arm_state);
if (status != VCHIQ_SUCCESS)
goto unlock;
if (arm_state->vc_suspend_state == VC_SUSPEND_SUSPENDED) {
/* Already suspended - just block resume and exit */
vchiq_log_info(vchiq_susp_log_level, "%s already suspended",
__func__);
status = VCHIQ_SUCCESS;
goto unlock;
} else if (arm_state->vc_suspend_state <= VC_SUSPEND_IDLE) {
/* initiate suspend immediately in the case that we're waiting
* for the timeout */
stop_suspend_timer(arm_state);
if (!vchiq_videocore_wanted(state)) {
vchiq_log_info(vchiq_susp_log_level, "%s videocore "
"idle, initiating suspend", __func__);
status = vchiq_arm_vcsuspend(state);
} else if (arm_state->autosuspend_override <
FORCE_SUSPEND_FAIL_MAX) {
vchiq_log_info(vchiq_susp_log_level, "%s letting "
"videocore go idle", __func__);
status = VCHIQ_SUCCESS;
} else {
vchiq_log_warning(vchiq_susp_log_level, "%s failed too "
"many times - attempting suspend", __func__);
status = vchiq_arm_vcsuspend(state);
}
} else {
vchiq_log_info(vchiq_susp_log_level, "%s videocore suspend "
"in progress - wait for completion", __func__);
status = VCHIQ_SUCCESS;
}
/* Wait for suspend to happen due to system idle (not forced..) */
if (status != VCHIQ_SUCCESS)
goto unblock_resume;
do {
write_unlock_bh(&arm_state->susp_res_lock);
rc = wait_for_completion_interruptible_timeout(
&arm_state->vc_suspend_complete,
msecs_to_jiffies(FORCE_SUSPEND_TIMEOUT_MS));
write_lock_bh(&arm_state->susp_res_lock);
if (rc < 0) {
vchiq_log_warning(vchiq_susp_log_level, "%s "
"interrupted waiting for suspend", __func__);
status = VCHIQ_ERROR;
goto unblock_resume;
} else if (rc == 0) {
if (arm_state->vc_suspend_state > VC_SUSPEND_IDLE) {
/* Repeat timeout once if in progress */
if (repeat < 0) {
repeat = 1;
continue;
}
}
arm_state->autosuspend_override++;
output_timeout_error(state);
status = VCHIQ_RETRY;
goto unblock_resume;
}
} while (0 < (repeat--));
/* Check and report state in case we need to abort ARM suspend */
if (arm_state->vc_suspend_state != VC_SUSPEND_SUSPENDED) {
status = VCHIQ_RETRY;
vchiq_log_error(vchiq_susp_log_level,
"%s videocore suspend failed (state %s)", __func__,
suspend_state_names[arm_state->vc_suspend_state +
VC_SUSPEND_NUM_OFFSET]);
/* Reset the state only if it's still in an error state.
* Something could have already initiated another suspend. */
if (arm_state->vc_suspend_state < VC_SUSPEND_IDLE)
set_suspend_state(arm_state, VC_SUSPEND_IDLE);
goto unblock_resume;
}
/* successfully suspended - unlock and exit */
goto unlock;
unblock_resume:
/* all error states need to unblock resume before exit */
unblock_resume(arm_state);
unlock:
write_unlock_bh(&arm_state->susp_res_lock);
out:
vchiq_log_trace(vchiq_susp_log_level, "%s exit %d", __func__, status);
return status;
}
void
vchiq_check_suspend(struct vchiq_state *state)
{

3
drivers/staging/vc04_services/interface/vchiq_arm/vchiq_arm.h
View file

@ -112,9 +112,6 @@ vchiq_get_state(void);
extern VCHIQ_STATUS_T
vchiq_arm_vcsuspend(struct vchiq_state *state);
extern VCHIQ_STATUS_T
vchiq_arm_force_suspend(struct vchiq_state *state);
extern VCHIQ_STATUS_T
vchiq_arm_vcresume(struct vchiq_state *state);