diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/cpu.c | 20 |
1 files changed, 8 insertions, 12 deletions
diff --git a/kernel/cpu.c b/kernel/cpu.c index f975bb34915b..b3c8553d7bd6 100644 --- a/kernel/cpu.c +++ b/kernel/cpu.c @@ -174,7 +174,7 @@ static int cpuhp_invoke_callback(unsigned int cpu, enum cpuhp_state state, struct cpuhp_step *step = cpuhp_get_step(state); int (*cbm)(unsigned int cpu, struct hlist_node *node); int (*cb)(unsigned int cpu); - int ret, cnt; + int ret, cnt, rollback_ret; if (st->fail == state) { st->fail = CPUHP_INVALID; @@ -238,12 +238,12 @@ err: break; trace_cpuhp_multi_enter(cpu, st->target, state, cbm, node); - ret = cbm(cpu, node); - trace_cpuhp_exit(cpu, st->state, state, ret); + rollback_ret = cbm(cpu, node); + trace_cpuhp_exit(cpu, st->state, state, rollback_ret); /* * Rollback must not fail, */ - WARN_ON_ONCE(ret); + WARN_ON_ONCE(rollback_ret); } return ret; } @@ -2854,21 +2854,17 @@ static const struct attribute_group cpuhp_cpu_attr_group = { .name = "hotplug", }; -static ssize_t states_show(struct device *dev, - struct device_attribute *attr, char *buf) +static ssize_t states_show(struct device *dev, struct device_attribute *attr, char *buf) { - ssize_t cur, res = 0; + ssize_t res = 0; int i; mutex_lock(&cpuhp_state_mutex); for (i = CPUHP_OFFLINE; i <= CPUHP_ONLINE; i++) { struct cpuhp_step *sp = cpuhp_get_step(i); - if (sp->name) { - cur = sprintf(buf, "%3d: %s\n", i, sp->name); - buf += cur; - res += cur; - } + if (sp->name) + res += sysfs_emit_at(buf, res, "%3d: %s\n", i, sp->name); } mutex_unlock(&cpuhp_state_mutex); return res; |