diff options
Diffstat (limited to 'drivers/s390/crypto/ap_bus.c')
| -rw-r--r-- | drivers/s390/crypto/ap_bus.c | 27 |
1 files changed, 20 insertions, 7 deletions
diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c index e04369a12d45..2027baec995c 100644 --- a/drivers/s390/crypto/ap_bus.c +++ b/drivers/s390/crypto/ap_bus.c @@ -104,8 +104,8 @@ debug_info_t *ap_dbf_info; static atomic64_t ap_scan_bus_count; /* counter ap_scan_bus() invocations */ static int ap_scan_bus_time = AP_CONFIG_TIME; static struct timer_list ap_scan_bus_timer; -static void ap_scan_bus(struct work_struct *); -static DECLARE_WORK(ap_scan_bus_work, ap_scan_bus); +static void ap_scan_bus_wq_callback(struct work_struct *); +static DECLARE_WORK(ap_scan_bus_work, ap_scan_bus_wq_callback); /* * Tasklet & timer for AP request polling and interrupts @@ -2179,12 +2179,13 @@ static bool ap_config_has_new_doms(void) /** * ap_scan_bus(): Scan the AP bus for new devices - * Runs periodically, workqueue timer (ap_scan_bus_time) - * @unused: Unused pointer. + * Returns true if any config change has been detected + * otherwise false. */ -static void ap_scan_bus(struct work_struct *unused) +static bool ap_scan_bus(void) { - int ap, config_changed = 0; + bool config_changed; + int ap; pr_debug(">%s\n", __func__); @@ -2235,11 +2236,14 @@ static void ap_scan_bus(struct work_struct *unused) mod_timer(&ap_scan_bus_timer, jiffies + ap_scan_bus_time * HZ); - pr_debug("<%s\n", __func__); + pr_debug("<%s config_changed=%d\n", __func__, config_changed); + + return config_changed; } /* * Callback for the ap_scan_bus_timer + * Runs periodically, workqueue timer (ap_scan_bus_time) */ static void ap_scan_bus_timer_callback(struct timer_list *unused) { @@ -2250,6 +2254,15 @@ static void ap_scan_bus_timer_callback(struct timer_list *unused) queue_work(system_long_wq, &ap_scan_bus_work); } +/* + * Callback for the ap_scan_bus_work + */ +static void ap_scan_bus_wq_callback(struct work_struct *unused) +{ + /* now finally do the AP bus scan */ + ap_scan_bus(); +} + static int __init ap_debug_init(void) { ap_dbf_info = debug_register("ap", 2, 1, |