12 files changed, 56 insertions, 55 deletions

diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index d984e0fae630..ccf46c96adb4 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -1149,12 +1149,14 @@ static void __dasd_device_process_final_queue(struct dasd_device *device,
 {
         struct list_head *l, *n;
         struct dasd_ccw_req *cqr;
+        struct dasd_block *block;
 
         list_for_each_safe(l, n, final_queue) {
                 cqr = list_entry(l, struct dasd_ccw_req, devlist);
                 list_del_init(&cqr->devlist);
-                if (cqr->block)
-                        spin_lock_bh(&cqr->block->queue_lock);
+                block = cqr->block;
+                if (block)
+                        spin_lock_bh(&block->queue_lock);
                 switch (cqr->status) {
                 case DASD_CQR_SUCCESS:
                         cqr->status = DASD_CQR_DONE;
@@ -1172,15 +1174,13 @@ static void __dasd_device_process_final_queue(struct dasd_device *device,
                                     cqr, cqr->status);
                         BUG();
                 }
-                if (cqr->block)
-                        spin_unlock_bh(&cqr->block->queue_lock);
                 if (cqr->callback != NULL)
                         (cqr->callback)(cqr, cqr->callback_data);
+                if (block)
+                        spin_unlock_bh(&block->queue_lock);
         }
 }
 
-
-
 /*
  * Take a look at the first request on the ccw queue and check
  * if it reached its expire time. If so, terminate the IO.
diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c
index 3faf0538b328..e6c94dbfdeaa 100644
--- a/drivers/s390/block/dcssblk.c
+++ b/drivers/s390/block/dcssblk.c
@@ -666,7 +666,7 @@ dcssblk_make_request(struct request_queue *q, struct bio *bio)
                 page_addr = (unsigned long)
                         page_address(bvec->bv_page) + bvec->bv_offset;
                 source_addr = dev_info->start + (index<<12) + bytes_done;
-                if (unlikely(page_addr & 4095) != 0 || (bvec->bv_len & 4095) != 0)
+                if (unlikely((page_addr & 4095) != 0) || (bvec->bv_len & 4095) != 0)
                         // More paranoia.
                         goto fail;
                 if (bio_data_dir(bio) == READ) {
diff --git a/drivers/s390/char/sclp.c b/drivers/s390/char/sclp.c
index 25629b92dec3..2c7a1ee6b041 100644
--- a/drivers/s390/char/sclp.c
+++ b/drivers/s390/char/sclp.c
@@ -29,10 +29,10 @@ static ext_int_info_t ext_int_info_hwc;
 /* Lock to protect internal data consistency. */
 static DEFINE_SPINLOCK(sclp_lock);
 
-/* Mask of events that we can receive from the sclp interface. */
+/* Mask of events that we can send to the sclp interface. */
 static sccb_mask_t sclp_receive_mask;
 
-/* Mask of events that we can send to the sclp interface. */
+/* Mask of events that we can receive from the sclp interface. */
 static sccb_mask_t sclp_send_mask;
 
 /* List of registered event listeners and senders. */
@@ -380,7 +380,7 @@ sclp_interrupt_handler(__u16 code)
                 }
                 sclp_running_state = sclp_running_state_idle;
         }
-        if (evbuf_pending && sclp_receive_mask != 0 &&
+        if (evbuf_pending &&
             sclp_activation_state == sclp_activation_state_active)
                 __sclp_queue_read_req();
         spin_unlock(&sclp_lock);
@@ -459,8 +459,8 @@ sclp_dispatch_state_change(void)
                 reg = NULL;
                 list_for_each(l, &sclp_reg_list) {
                         reg = list_entry(l, struct sclp_register, list);
-                        receive_mask = reg->receive_mask & sclp_receive_mask;
-                        send_mask = reg->send_mask & sclp_send_mask;
+                        receive_mask = reg->send_mask & sclp_receive_mask;
+                        send_mask = reg->receive_mask & sclp_send_mask;
                         if (reg->sclp_receive_mask != receive_mask ||
                             reg->sclp_send_mask != send_mask) {
                                 reg->sclp_receive_mask = receive_mask;
@@ -615,8 +615,8 @@ struct init_sccb {
         u16 mask_length;
         sccb_mask_t receive_mask;
         sccb_mask_t send_mask;
-        sccb_mask_t sclp_send_mask;
         sccb_mask_t sclp_receive_mask;
+        sccb_mask_t sclp_send_mask;
 } __attribute__((packed));
 
 /* Prepare init mask request. Called while sclp_lock is locked. */
diff --git a/drivers/s390/char/sclp.h b/drivers/s390/char/sclp.h
index aa8186d18aee..bac80e856f97 100644
--- a/drivers/s390/char/sclp.h
+++ b/drivers/s390/char/sclp.h
@@ -122,11 +122,13 @@ struct sclp_req {
 /* of some routines it wants to be called from the low level driver */
 struct sclp_register {
         struct list_head list;
-        /* event masks this user is registered for */
+        /* User wants to receive: */
         sccb_mask_t receive_mask;
+        /* User wants to send: */
         sccb_mask_t send_mask;
-        /* actually present events */
+        /* H/W can receive: */
         sccb_mask_t sclp_receive_mask;
+        /* H/W can send: */
         sccb_mask_t sclp_send_mask;
         /* called if event type availability changes */
         void (*state_change_fn)(struct sclp_register *);
diff --git a/drivers/s390/char/sclp_config.c b/drivers/s390/char/sclp_config.c
index 9dc77f14fa52..b8f35bc52b7b 100644
--- a/drivers/s390/char/sclp_config.c
+++ b/drivers/s390/char/sclp_config.c
@@ -64,7 +64,7 @@ static int __init sclp_conf_init(void)
                 return rc;
         }
 
-        if (!(sclp_conf_register.sclp_receive_mask & EVTYP_CONFMGMDATA_MASK)) {
+        if (!(sclp_conf_register.sclp_send_mask & EVTYP_CONFMGMDATA_MASK)) {
                 printk(KERN_WARNING TAG "no configuration management.\n");
                 sclp_unregister(&sclp_conf_register);
                 rc = -ENOSYS;
diff --git a/drivers/s390/char/sclp_cpi_sys.c b/drivers/s390/char/sclp_cpi_sys.c
index 41617032afdc..9f37456222e9 100644
--- a/drivers/s390/char/sclp_cpi_sys.c
+++ b/drivers/s390/char/sclp_cpi_sys.c
@@ -129,7 +129,7 @@ static int cpi_req(void)
                         "to hardware console.\n");
                 goto out;
         }
-        if (!(sclp_cpi_event.sclp_send_mask & EVTYP_CTLPROGIDENT_MASK)) {
+        if (!(sclp_cpi_event.sclp_receive_mask & EVTYP_CTLPROGIDENT_MASK)) {
                 printk(KERN_WARNING "cpi: no control program "
                         "identification support\n");
                 rc = -EOPNOTSUPP;
diff --git a/drivers/s390/char/sclp_rw.c b/drivers/s390/char/sclp_rw.c
index ad7195d3de0c..da09781b32f7 100644
--- a/drivers/s390/char/sclp_rw.c
+++ b/drivers/s390/char/sclp_rw.c
@@ -452,10 +452,10 @@ sclp_emit_buffer(struct sclp_buffer *buffer,
                 return -EIO;
 
         sccb = buffer->sccb;
-        if (sclp_rw_event.sclp_send_mask & EVTYP_MSG_MASK)
+        if (sclp_rw_event.sclp_receive_mask & EVTYP_MSG_MASK)
                 /* Use normal write message */
                 sccb->msg_buf.header.type = EVTYP_MSG;
-        else if (sclp_rw_event.sclp_send_mask & EVTYP_PMSGCMD_MASK)
+        else if (sclp_rw_event.sclp_receive_mask & EVTYP_PMSGCMD_MASK)
                 /* Use write priority message */
                 sccb->msg_buf.header.type = EVTYP_PMSGCMD;
         else
diff --git a/drivers/s390/char/sclp_vt220.c b/drivers/s390/char/sclp_vt220.c
index f47f4a768be5..92f527201792 100644
--- a/drivers/s390/char/sclp_vt220.c
+++ b/drivers/s390/char/sclp_vt220.c
@@ -202,7 +202,7 @@ sclp_vt220_callback(struct sclp_req *request, void *data)
 static int
 __sclp_vt220_emit(struct sclp_vt220_request *request)
 {
-        if (!(sclp_vt220_register.sclp_send_mask & EVTYP_VT220MSG_MASK)) {
+        if (!(sclp_vt220_register.sclp_receive_mask & EVTYP_VT220MSG_MASK)) {
                 request->sclp_req.status = SCLP_REQ_FAILED;
                 return -EIO;
         }
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index d35dc3f25d06..fec004f62bcf 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -32,7 +32,7 @@
 #include "io_sch.h"
 
 static struct timer_list recovery_timer;
-static spinlock_t recovery_lock;
+static DEFINE_SPINLOCK(recovery_lock);
 static int recovery_phase;
 static const unsigned long recovery_delay[] = { 3, 30, 300 };
 
@@ -1535,7 +1535,7 @@ static int recovery_check(struct device *dev, void *data)
         return 0;
 }
 
-static void recovery_func(unsigned long data)
+static void recovery_work_func(struct work_struct *unused)
 {
         int redo = 0;
 
@@ -1553,6 +1553,17 @@ static void recovery_func(unsigned long data)
                 CIO_MSG_EVENT(2, "recovery: end\n");
 }
 
+static DECLARE_WORK(recovery_work, recovery_work_func);
+
+static void recovery_func(unsigned long data)
+{
+        /*
+         * We can't do our recovery in softirq context and it's not
+         * performance critical, so we schedule it.
+         */
+        schedule_work(&recovery_work);
+}
+
 void ccw_device_schedule_recovery(void)
 {
         unsigned long flags;
diff --git a/drivers/s390/cio/qdio.c b/drivers/s390/cio/qdio.c
index 097fc0967e9d..2b5bfb7c69e5 100644
--- a/drivers/s390/cio/qdio.c
+++ b/drivers/s390/cio/qdio.c
@@ -32,7 +32,7 @@
 
 #include <linux/module.h>
 #include <linux/init.h>
-
+#include <linux/delay.h>
 #include <linux/slab.h>
 #include <linux/kernel.h>
 #include <linux/proc_fs.h>
@@ -1215,9 +1215,6 @@ tiqdio_is_inbound_q_done(struct qdio_q *q)
 
         if (!no_used)
                 return 1;
-        if (!q->siga_sync && !irq->is_qebsm)
-                /* we'll check for more primed buffers in qeth_stop_polling */
-                return 0;
         if (irq->is_qebsm) {
                 count = 1;
                 start_buf = q->first_to_check;
@@ -3332,13 +3329,7 @@ qdio_activate(struct ccw_device *cdev, int flags)
                 }
         }
 
-        wait_event_interruptible_timeout(cdev->private->wait_q,
-                                         ((irq_ptr->state ==
-                                          QDIO_IRQ_STATE_STOPPED) ||
-                                          (irq_ptr->state ==
-                                           QDIO_IRQ_STATE_ERR)),
-                                         QDIO_ACTIVATE_TIMEOUT);
-
+        msleep(QDIO_ACTIVATE_TIMEOUT);
         switch (irq_ptr->state) {
         case QDIO_IRQ_STATE_STOPPED:
         case QDIO_IRQ_STATE_ERR:
diff --git a/drivers/s390/cio/qdio.h b/drivers/s390/cio/qdio.h
index 37870e4e938e..da8a272fd75b 100644
--- a/drivers/s390/cio/qdio.h
+++ b/drivers/s390/cio/qdio.h
@@ -57,10 +57,10 @@
                                             of the queue to 0 */
 
 #define QDIO_ESTABLISH_TIMEOUT (1*HZ)
-#define QDIO_ACTIVATE_TIMEOUT (5*HZ)
 #define QDIO_CLEANUP_CLEAR_TIMEOUT (20*HZ)
 #define QDIO_CLEANUP_HALT_TIMEOUT (10*HZ)
 #define QDIO_FORCE_CHECK_TIMEOUT (10*HZ)
+#define QDIO_ACTIVATE_TIMEOUT (5) /* 5 ms */
 
 enum qdio_irq_states {
         QDIO_IRQ_STATE_INACTIVE,
diff --git a/drivers/s390/net/claw.c b/drivers/s390/net/claw.c
index c3076217871e..d8a5c229c5a7 100644
--- a/drivers/s390/net/claw.c
+++ b/drivers/s390/net/claw.c
@@ -1851,8 +1851,7 @@ claw_hw_tx(struct sk_buff *skb, struct net_device *dev, long linkid)
                 }
         }
         /*      See how many write buffers are required to hold this data */
-        numBuffers= ( skb->len + privptr->p_env->write_size - 1) /
-                        ( privptr->p_env->write_size);
+        numBuffers = DIV_ROUND_UP(skb->len, privptr->p_env->write_size);
 
         /*      If that number of buffers isn't available, give up for now */
         if (privptr->write_free_count < numBuffers ||
@@ -2114,8 +2113,7 @@ init_ccw_bk(struct net_device *dev)
         */
         ccw_blocks_perpage= PAGE_SIZE /  CCWBK_SIZE;
         ccw_pages_required=
-                (ccw_blocks_required+ccw_blocks_perpage -1) /
-                         ccw_blocks_perpage;
+                DIV_ROUND_UP(ccw_blocks_required, ccw_blocks_perpage);
 
 #ifdef DEBUGMSG
         printk(KERN_INFO "%s: %s() > ccw_blocks_perpage=%d\n",
@@ -2131,30 +2129,29 @@ init_ccw_bk(struct net_device *dev)
          * provide good performance. With packing buffers support 32k
          * buffers are used.
          */
-        if (privptr->p_env->read_size < PAGE_SIZE) {
-            claw_reads_perpage= PAGE_SIZE / privptr->p_env->read_size;
-            claw_read_pages= (privptr->p_env->read_buffers +
-                claw_reads_perpage -1) / claw_reads_perpage;
+        if (privptr->p_env->read_size < PAGE_SIZE) {
+                claw_reads_perpage = PAGE_SIZE / privptr->p_env->read_size;
+                claw_read_pages = DIV_ROUND_UP(privptr->p_env->read_buffers,
+                                                claw_reads_perpage);
          }
          else {       /* > or equal  */
-            privptr->p_buff_pages_perread=
-                (privptr->p_env->read_size + PAGE_SIZE - 1) / PAGE_SIZE;
-            claw_read_pages=
-                privptr->p_env->read_buffers * privptr->p_buff_pages_perread;
+                privptr->p_buff_pages_perread =
+                        DIV_ROUND_UP(privptr->p_env->read_size, PAGE_SIZE);
+                claw_read_pages = privptr->p_env->read_buffers *
+                                        privptr->p_buff_pages_perread;
          }
         if (privptr->p_env->write_size < PAGE_SIZE) {
-            claw_writes_perpage=
-                PAGE_SIZE / privptr->p_env->write_size;
-            claw_write_pages=
-                (privptr->p_env->write_buffers + claw_writes_perpage -1) /
-                        claw_writes_perpage;
+                claw_writes_perpage =
+                        PAGE_SIZE / privptr->p_env->write_size;
+                claw_write_pages = DIV_ROUND_UP(privptr->p_env->write_buffers,
+                                                claw_writes_perpage);
 
         }
         else {      /* >  or equal  */
-            privptr->p_buff_pages_perwrite=
-                 (privptr->p_env->read_size + PAGE_SIZE - 1) / PAGE_SIZE;
-            claw_write_pages=
-                privptr->p_env->write_buffers * privptr->p_buff_pages_perwrite;
+                privptr->p_buff_pages_perwrite =
+                        DIV_ROUND_UP(privptr->p_env->read_size, PAGE_SIZE);
+                claw_write_pages = privptr->p_env->write_buffers *
+                                        privptr->p_buff_pages_perwrite;
         }
 #ifdef DEBUGMSG
         if (privptr->p_env->read_size < PAGE_SIZE) {