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authorSebastian Ott <sebott@linux.vnet.ibm.com>2014-01-27 13:29:15 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2014-02-21 08:50:13 +0100
commit137a14f434705a366cc94b2b32f2488c975863ad (patch)
treec96cb1dc2842395e5b27b026a731add396940676 /drivers/s390
parent1e5320960510d6d6f2cbdc7ed33df9791283b7ea (diff)
downloadlinux-137a14f434705a366cc94b2b32f2488c975863ad.tar.bz2
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>
Diffstat (limited to 'drivers/s390')
-rw-r--r--drivers/s390/cio/device.c22
1 files changed, 14 insertions, 8 deletions
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index da431992fd8e..d8d9b5b5cc56 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -1571,6 +1571,18 @@ out:
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;