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yaml
---
r: 148761
b: refs/heads/master
c: 4c57542
h: refs/heads/master
i:
  148759: d8acd8c
v: v3
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Jan Glauber authored and Martin Schwidefsky committed Jun 12, 2009
1 parent d960bcc commit 5764d91
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Showing 2 changed files with 13 additions and 33 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: e45efa99b0b0035a2afc192c242e37eec5477497
refs/heads/master: 4c57542320e73b9ff46b04092273dbcc184a4fb6
44 changes: 12 additions & 32 deletions trunk/drivers/s390/cio/qdio_main.c
Original file line number Diff line number Diff line change
Expand Up @@ -881,42 +881,26 @@ static void qdio_handle_activate_check(struct ccw_device *cdev,
qdio_set_state(irq_ptr, QDIO_IRQ_STATE_STOPPED);
}

static int qdio_establish_check_errors(struct ccw_device *cdev, int cstat,
int dstat)
static void qdio_establish_handle_irq(struct ccw_device *cdev, int cstat,
int dstat)
{
struct qdio_irq *irq_ptr = cdev->private->qdio_data;

if (cstat || (dstat & ~(DEV_STAT_CHN_END | DEV_STAT_DEV_END))) {
DBF_ERROR("EQ:ck con");
goto error;
}
DBF_DEV_EVENT(DBF_INFO, irq_ptr, "qest irq");

if (!(dstat & DEV_STAT_DEV_END)) {
DBF_ERROR("EQ:no dev");
if (cstat)
goto error;
}

if (dstat & ~(DEV_STAT_CHN_END | DEV_STAT_DEV_END)) {
DBF_ERROR("EQ: bad io");
if (dstat & ~(DEV_STAT_DEV_END | DEV_STAT_CHN_END))
goto error;
}
return 0;
if (!(dstat & DEV_STAT_DEV_END))
goto error;
qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ESTABLISHED);
return;

error:
DBF_ERROR("%4x EQ:error", irq_ptr->schid.sch_no);
DBF_ERROR("ds: %2x cs:%2x", dstat, cstat);

qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
return 1;
}

static void qdio_establish_handle_irq(struct ccw_device *cdev, int cstat,
int dstat)
{
struct qdio_irq *irq_ptr = cdev->private->qdio_data;

DBF_DEV_EVENT(DBF_INFO, irq_ptr, "qest irq");
if (!qdio_establish_check_errors(cdev, cstat, dstat))
qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ESTABLISHED);
}

/* qdio interrupt handler */
Expand Down Expand Up @@ -946,30 +930,26 @@ void qdio_int_handler(struct ccw_device *cdev, unsigned long intparm,
}
}
qdio_irq_check_sense(irq_ptr, irb);

cstat = irb->scsw.cmd.cstat;
dstat = irb->scsw.cmd.dstat;

switch (irq_ptr->state) {
case QDIO_IRQ_STATE_INACTIVE:
qdio_establish_handle_irq(cdev, cstat, dstat);
break;

case QDIO_IRQ_STATE_CLEANUP:
qdio_set_state(irq_ptr, QDIO_IRQ_STATE_INACTIVE);
break;

case QDIO_IRQ_STATE_ESTABLISHED:
case QDIO_IRQ_STATE_ACTIVE:
if (cstat & SCHN_STAT_PCI) {
qdio_int_handler_pci(irq_ptr);
return;
}
if ((cstat & ~SCHN_STAT_PCI) || dstat) {
if (cstat || dstat)
qdio_handle_activate_check(cdev, intparm, cstat,
dstat);
break;
}
break;
default:
WARN_ON(1);
}
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