From 6ed90e3622d1b3eff2433cc0c31fdcfc3cd2a23f Mon Sep 17 00:00:00 2001 From: Christian Gromm Date: Tue, 22 Dec 2015 10:52:56 +0100 Subject: [PATCH] staging: most: remove tainted flag This patch removes the atomic tainted flag. It is needed to get rid of logical overhead. Signed-off-by: Christian Gromm Signed-off-by: Greg Kroah-Hartman --- drivers/staging/most/mostcore/core.c | 33 +--------------------------- 1 file changed, 1 insertion(+), 32 deletions(-) diff --git a/drivers/staging/most/mostcore/core.c b/drivers/staging/most/mostcore/core.c index 782747a50477..58e288b74b1b 100644 --- a/drivers/staging/most/mostcore/core.c +++ b/drivers/staging/most/mostcore/core.c @@ -74,7 +74,6 @@ struct most_c_obj { struct most_inst_obj { int dev_id; - atomic_t tainted; struct most_interface *iface; struct list_head channel_list; struct most_c_obj *channel[MAX_CHANNELS]; @@ -1299,18 +1298,10 @@ _exit: */ int most_submit_mbo(struct mbo *mbo) { - struct most_c_obj *c; - struct most_inst_obj *i; - if (unlikely((!mbo) || (!mbo->context))) { pr_err("Bad MBO or missing channel reference\n"); return -EINVAL; } - c = mbo->context; - i = c->inst; - - if (unlikely(atomic_read(&i->tainted))) - return -ENODEV; nq_hdm_mbo(mbo); return 0; @@ -1436,17 +1427,8 @@ EXPORT_SYMBOL_GPL(most_get_mbo); */ void most_put_mbo(struct mbo *mbo) { - struct most_c_obj *c; - struct most_inst_obj *i; - - c = mbo->context; - i = c->inst; + struct most_c_obj *c = mbo->context; - if (unlikely(atomic_read(&i->tainted))) { - mbo->status = MBO_E_CLOSE; - trash_mbo(mbo); - return; - } if (c->cfg.direction == MOST_CH_TX) { arm_mbo(mbo); return; @@ -1602,14 +1584,6 @@ int most_stop_channel(struct most_interface *iface, int id, c->hdm_enqueue_task = NULL; mutex_unlock(&c->stop_task_mutex); - mutex_lock(&deregister_mutex); - if (atomic_read(&c->inst->tainted)) { - mutex_unlock(&deregister_mutex); - mutex_unlock(&c->start_mutex); - return -ENODEV; - } - mutex_unlock(&deregister_mutex); - if (iface->mod && modref) { module_put(iface->mod); modref--; @@ -1750,7 +1724,6 @@ struct kobject *most_register_interface(struct most_interface *iface) INIT_LIST_HEAD(&inst->channel_list); inst->iface = iface; inst->dev_id = id; - atomic_set(&inst->tainted, 0); list_add_tail(&inst->list, &instance_list); for (i = 0; i < iface->num_channels; i++) { @@ -1835,10 +1808,6 @@ void most_deregister_interface(struct most_interface *iface) c->aim1.ptr = NULL; } - mutex_lock(&deregister_mutex); - atomic_set(&i->tainted, 1); - mutex_unlock(&deregister_mutex); - while (modref) { if (iface->mod && modref) module_put(iface->mod); -- 2.20.1