diff options
author | Gavin Shan <gshan@redhat.com> | 2020-09-22 23:04:21 +1000 |
---|---|---|
committer | Will Deacon <will@kernel.org> | 2020-09-28 21:52:23 +0100 |
commit | f4673625a52c69a12d2a8f71bcf408c685c148ec (patch) | |
tree | 2838b92989bd46727a8149a744c98d33483c4173 /drivers | |
parent | a27c04e1de876297b78a6b812049e6fecc6e4d9a (diff) | |
download | linux-f4673625a52c69a12d2a8f71bcf408c685c148ec.tar.bz2 |
firmware: arm_sdei: Introduce sdei_do_local_call()
During the CPU hotplug, the private events are registered, enabled
or unregistered on the specific CPU. It repeats the same steps:
initializing cross call argument, make function call on local CPU,
check the returned error.
This introduces sdei_do_local_call() to cover the first steps. The
other benefit is to make CROSSCALL_INIT and struct sdei_crosscall_args
are only visible to sdei_do_{cross, local}_call().
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/20200922130423.10173-12-gshan@redhat.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/firmware/arm_sdei.c | 41 |
1 files changed, 25 insertions, 16 deletions
diff --git a/drivers/firmware/arm_sdei.c b/drivers/firmware/arm_sdei.c index 786c1b6d4af3..cf1a37b40e24 100644 --- a/drivers/firmware/arm_sdei.c +++ b/drivers/firmware/arm_sdei.c @@ -85,6 +85,17 @@ struct sdei_crosscall_args { atomic_set(&arg.errors, 0); \ } while (0) +static inline int sdei_do_local_call(smp_call_func_t fn, + struct sdei_event *event) +{ + struct sdei_crosscall_args arg; + + CROSSCALL_INIT(arg, event); + fn(&arg); + + return arg.first_error; +} + static inline int sdei_do_cross_call(smp_call_func_t fn, struct sdei_event *event) { @@ -677,7 +688,7 @@ static int sdei_reregister_shared(void) static int sdei_cpuhp_down(unsigned int cpu) { struct sdei_event *event; - struct sdei_crosscall_args arg; + int err; /* un-register private events */ spin_lock(&sdei_list_lock); @@ -685,12 +696,11 @@ static int sdei_cpuhp_down(unsigned int cpu) if (event->type == SDEI_EVENT_TYPE_SHARED) continue; - CROSSCALL_INIT(arg, event); - /* call the cross-call function locally... */ - _local_event_unregister(&arg); - if (arg.first_error) + err = sdei_do_local_call(_local_event_unregister, event); + if (err) { pr_err("Failed to unregister event %u: %d\n", - event->event_num, arg.first_error); + event->event_num, err); + } } spin_unlock(&sdei_list_lock); @@ -700,7 +710,7 @@ static int sdei_cpuhp_down(unsigned int cpu) static int sdei_cpuhp_up(unsigned int cpu) { struct sdei_event *event; - struct sdei_crosscall_args arg; + int err; /* re-register/enable private events */ spin_lock(&sdei_list_lock); @@ -709,20 +719,19 @@ static int sdei_cpuhp_up(unsigned int cpu) continue; if (event->reregister) { - CROSSCALL_INIT(arg, event); - /* call the cross-call function locally... */ - _local_event_register(&arg); - if (arg.first_error) + err = sdei_do_local_call(_local_event_register, event); + if (err) { pr_err("Failed to re-register event %u: %d\n", - event->event_num, arg.first_error); + event->event_num, err); + } } if (event->reenable) { - CROSSCALL_INIT(arg, event); - _local_event_enable(&arg); - if (arg.first_error) + err = sdei_do_local_call(_local_event_enable, event); + if (err) { pr_err("Failed to re-enable event %u: %d\n", - event->event_num, arg.first_error); + event->event_num, err); + } } } spin_unlock(&sdei_list_lock); |