diff options
Diffstat (limited to 'drivers/s390/crypto/ap_queue.c')
| -rw-r--r-- | drivers/s390/crypto/ap_queue.c | 75 |
1 files changed, 12 insertions, 63 deletions
diff --git a/drivers/s390/crypto/ap_queue.c b/drivers/s390/crypto/ap_queue.c index a317ab484932..0eaf1d04e8df 100644 --- a/drivers/s390/crypto/ap_queue.c +++ b/drivers/s390/crypto/ap_queue.c @@ -152,7 +152,7 @@ static struct ap_queue_status ap_sm_recv(struct ap_queue *aq) ap_msg->receive(aq, ap_msg, aq->reply); break; } - /* fall through */ + fallthrough; case AP_RESPONSE_NO_PENDING_REPLY: if (!status.queue_empty || aq->queue_count <= 0) break; @@ -201,31 +201,6 @@ static enum ap_wait ap_sm_read(struct ap_queue *aq) } /** - * ap_sm_suspend_read(): Receive pending reply messages from an AP queue - * without changing the device state in between. In suspend mode we don't - * allow sending new requests, therefore just fetch pending replies. - * @aq: pointer to the AP queue - * - * Returns AP_WAIT_NONE or AP_WAIT_AGAIN - */ -static enum ap_wait ap_sm_suspend_read(struct ap_queue *aq) -{ - struct ap_queue_status status; - - if (!aq->reply) - return AP_WAIT_NONE; - status = ap_sm_recv(aq); - switch (status.response_code) { - case AP_RESPONSE_NORMAL: - if (aq->queue_count > 0) - return AP_WAIT_AGAIN; - /* fall through */ - default: - return AP_WAIT_NONE; - } -} - -/** * ap_sm_write(): Send messages from the request queue to an AP queue. * @aq: pointer to the AP queue * @@ -254,7 +229,7 @@ static enum ap_wait ap_sm_write(struct ap_queue *aq) aq->state = AP_STATE_WORKING; return AP_WAIT_AGAIN; } - /* fall through */ + fallthrough; case AP_RESPONSE_Q_FULL: aq->state = AP_STATE_QUEUE_FULL; return AP_WAIT_INTERRUPT; @@ -380,7 +355,7 @@ static enum ap_wait ap_sm_setirq_wait(struct ap_queue *aq) case AP_RESPONSE_NORMAL: if (aq->queue_count > 0) return AP_WAIT_AGAIN; - /* fallthrough */ + fallthrough; case AP_RESPONSE_NO_PENDING_REPLY: return AP_WAIT_TIMEOUT; default: @@ -417,10 +392,6 @@ static ap_func_t *ap_jumptable[NR_AP_STATES][NR_AP_EVENTS] = { [AP_EVENT_POLL] = ap_sm_read, [AP_EVENT_TIMEOUT] = ap_sm_reset, }, - [AP_STATE_SUSPEND_WAIT] = { - [AP_EVENT_POLL] = ap_sm_suspend_read, - [AP_EVENT_TIMEOUT] = ap_sm_nop, - }, [AP_STATE_REMOVE] = { [AP_EVENT_POLL] = ap_sm_nop, [AP_EVENT_TIMEOUT] = ap_sm_nop, @@ -450,28 +421,6 @@ enum ap_wait ap_sm_event_loop(struct ap_queue *aq, enum ap_event event) } /* - * Power management for queue devices - */ -void ap_queue_suspend(struct ap_device *ap_dev) -{ - struct ap_queue *aq = to_ap_queue(&ap_dev->device); - - /* Poll on the device until all requests are finished. */ - spin_lock_bh(&aq->lock); - aq->state = AP_STATE_SUSPEND_WAIT; - while (ap_sm_event(aq, AP_EVENT_POLL) != AP_WAIT_NONE) - ; - aq->state = AP_STATE_BORKED; - spin_unlock_bh(&aq->lock); -} -EXPORT_SYMBOL(ap_queue_suspend); - -void ap_queue_resume(struct ap_device *ap_dev) -{ -} -EXPORT_SYMBOL(ap_queue_resume); - -/* * AP queue related attributes. */ static ssize_t request_count_show(struct device *dev, @@ -484,7 +433,7 @@ static ssize_t request_count_show(struct device *dev, spin_lock_bh(&aq->lock); req_cnt = aq->total_request_count; spin_unlock_bh(&aq->lock); - return snprintf(buf, PAGE_SIZE, "%llu\n", req_cnt); + return scnprintf(buf, PAGE_SIZE, "%llu\n", req_cnt); } static ssize_t request_count_store(struct device *dev, @@ -511,7 +460,7 @@ static ssize_t requestq_count_show(struct device *dev, spin_lock_bh(&aq->lock); reqq_cnt = aq->requestq_count; spin_unlock_bh(&aq->lock); - return snprintf(buf, PAGE_SIZE, "%d\n", reqq_cnt); + return scnprintf(buf, PAGE_SIZE, "%d\n", reqq_cnt); } static DEVICE_ATTR_RO(requestq_count); @@ -525,7 +474,7 @@ static ssize_t pendingq_count_show(struct device *dev, spin_lock_bh(&aq->lock); penq_cnt = aq->pendingq_count; spin_unlock_bh(&aq->lock); - return snprintf(buf, PAGE_SIZE, "%d\n", penq_cnt); + return scnprintf(buf, PAGE_SIZE, "%d\n", penq_cnt); } static DEVICE_ATTR_RO(pendingq_count); @@ -540,14 +489,14 @@ static ssize_t reset_show(struct device *dev, switch (aq->state) { case AP_STATE_RESET_START: case AP_STATE_RESET_WAIT: - rc = snprintf(buf, PAGE_SIZE, "Reset in progress.\n"); + rc = scnprintf(buf, PAGE_SIZE, "Reset in progress.\n"); break; case AP_STATE_WORKING: case AP_STATE_QUEUE_FULL: - rc = snprintf(buf, PAGE_SIZE, "Reset Timer armed.\n"); + rc = scnprintf(buf, PAGE_SIZE, "Reset Timer armed.\n"); break; default: - rc = snprintf(buf, PAGE_SIZE, "No Reset Timer set.\n"); + rc = scnprintf(buf, PAGE_SIZE, "No Reset Timer set.\n"); } spin_unlock_bh(&aq->lock); return rc; @@ -581,11 +530,11 @@ static ssize_t interrupt_show(struct device *dev, spin_lock_bh(&aq->lock); if (aq->state == AP_STATE_SETIRQ_WAIT) - rc = snprintf(buf, PAGE_SIZE, "Enable Interrupt pending.\n"); + rc = scnprintf(buf, PAGE_SIZE, "Enable Interrupt pending.\n"); else if (aq->interrupt == AP_INTR_ENABLED) - rc = snprintf(buf, PAGE_SIZE, "Interrupts enabled.\n"); + rc = scnprintf(buf, PAGE_SIZE, "Interrupts enabled.\n"); else - rc = snprintf(buf, PAGE_SIZE, "Interrupts disabled.\n"); + rc = scnprintf(buf, PAGE_SIZE, "Interrupts disabled.\n"); spin_unlock_bh(&aq->lock); return rc; } |