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firmware: arm_sdei: Remove _sdei_event_register() 

The function _sdei_event_register() is called by sdei_event_register()
and sdei_device_thaw() as the following functional call chain shows.
_sdei_event_register() covers the shared and private events, but
sdei_device_thaw() only covers the shared events. So the logic to
cover the private events in _sdei_event_register() isn't needed by
sdei_device_thaw().

Similarly, sdei_reregister_event_llocked() covers the shared and
private events in the regard of reenablement. The logic to cover
the private events isn't needed by sdei_device_thaw() either.

   sdei_event_register          sdei_device_thaw
      _sdei_event_register         sdei_reregister_shared
                                      sdei_reregister_event_llocked
                                         _sdei_event_register

This removes _sdei_event_register() and sdei_reregister_event_llocked().
Their logic is moved to sdei_event_register() and sdei_reregister_shared().
This shouldn't cause any logical changes.

Signed-off-by: Gavin Shan <gshan@redhat.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: James Morse <james.morse@arm.com>
Link: https://lore.kernel.org/r/20200922130423.10173-13-gshan@redhat.com
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Gavin Shan 2020-09-22 23:04:22 +10:00 committed by Will Deacon
parent f4673625a5
commit d2fc580d2d
1 changed files with 28 additions and 49 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

77
drivers/firmware/arm_sdei.c
View File

@ -577,25 +577,6 @@ static void _local_event_register(void *data)
sdei_cross_call_return(arg, err);
}
static int _sdei_event_register(struct sdei_event *event)
{
int err;
lockdep_assert_held(&sdei_events_lock);
if (event->type == SDEI_EVENT_TYPE_SHARED)
return sdei_api_event_register(event->event_num,
sdei_entry_point,
event->registered,
SDEI_EVENT_REGISTER_RM_ANY, 0);
err = sdei_do_cross_call(_local_event_register, event);
if (err)
sdei_do_cross_call(_local_event_unregister, event);
return err;
}
int sdei_event_register(u32 event_num, sdei_event_callback *cb, void *arg)
{
int err;
@ -618,7 +599,17 @@ int sdei_event_register(u32 event_num, sdei_event_callback *cb, void *arg)
}
cpus_read_lock();
err = _sdei_event_register(event);
if (event->type == SDEI_EVENT_TYPE_SHARED) {
err = sdei_api_event_register(event->event_num,
sdei_entry_point,
event->registered,
SDEI_EVENT_REGISTER_RM_ANY, 0);
} else {
err = sdei_do_cross_call(_local_event_register, event);
if (err)
sdei_do_cross_call(_local_event_unregister, event);
}
if (err) {
sdei_event_destroy(event);
pr_warn("Failed to register event %u: %d\n", event_num, err);
@ -635,33 +626,6 @@ int sdei_event_register(u32 event_num, sdei_event_callback *cb, void *arg)
return err;
}
static int sdei_reregister_event_llocked(struct sdei_event *event)
{
int err;
lockdep_assert_held(&sdei_events_lock);
lockdep_assert_held(&sdei_list_lock);
err = _sdei_event_register(event);
if (err) {
pr_err("Failed to re-register event %u\n", event->event_num);
sdei_event_destroy_llocked(event);
return err;
}
if (event->reenable) {
if (event->type == SDEI_EVENT_TYPE_SHARED)
err = sdei_api_event_enable(event->event_num);
else
err = sdei_do_cross_call(_local_event_enable, event);
}
if (err)
pr_err("Failed to re-enable event %u\n", event->event_num);
return err;
}
static int sdei_reregister_shared(void)
{
int err = 0;
@ -674,9 +638,24 @@ static int sdei_reregister_shared(void)
continue;
if (event->reregister) {
err = sdei_reregister_event_llocked(event);
if (err)
err = sdei_api_event_register(event->event_num,
sdei_entry_point, event->registered,
SDEI_EVENT_REGISTER_RM_ANY, 0);
if (err) {
pr_err("Failed to re-register event %u\n",
event->event_num);
sdei_event_destroy_llocked(event);
break;
}
}
if (event->reenable) {
err = sdei_api_event_enable(event->event_num);
if (err) {
pr_err("Failed to re-enable event %u\n",
event->event_num);
break;
}
}
}
spin_unlock(&sdei_list_lock);