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s390/cio: fix irq stats for early interrupts on ccw consoles 

Interrupts which happen on ccw consoles prior to their registration
with the driver core are not accounted to the respective device
driver. Fix this by setting the proper interrupt class during
initialization of ccw consoles.

Reviewed-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Sebastian Ott 2014-01-27 13:29:15 +01:00 committed by Martin Schwidefsky
parent 1e53209605
commit 137a14f434
1 changed files with 14 additions and 8 deletions
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22
drivers/s390/cio/device.c
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@ -1571,6 +1571,18 @@ static int io_subchannel_sch_event(struct subchannel *sch, int process)
return rc;
}
static void ccw_device_set_int_class(struct ccw_device *cdev)
{
struct ccw_driver *cdrv = cdev->drv;
/* Note: we interpret class 0 in this context as an uninitialized
* field since it translates to a non-I/O interrupt class. */
if (cdrv->int_class != 0)
cdev->private->int_class = cdrv->int_class;
else
cdev->private->int_class = IRQIO_CIO;
}
#ifdef CONFIG_CCW_CONSOLE
int __init ccw_device_enable_console(struct ccw_device *cdev)
{
@ -1635,6 +1647,7 @@ struct ccw_device * __init ccw_device_create_console(struct ccw_driver *drv)
}
cdev->drv = drv;
set_io_private(sch, io_priv);
ccw_device_set_int_class(cdev);
return cdev;
}
@ -1732,15 +1745,8 @@ ccw_device_probe (struct device *dev)
int ret;
cdev->drv = cdrv; /* to let the driver call _set_online */
/* Note: we interpret class 0 in this context as an uninitialized
* field since it translates to a non-I/O interrupt class. */
if (cdrv->int_class != 0)
cdev->private->int_class = cdrv->int_class;
else
cdev->private->int_class = IRQIO_CIO;
ccw_device_set_int_class(cdev);
ret = cdrv->probe ? cdrv->probe(cdev) : -ENODEV;
if (ret) {
cdev->drv = NULL;
cdev->private->int_class = IRQIO_CIO;