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authorSebastian Ott <sebott@linux.vnet.ibm.com>2015-10-26 12:35:06 +0100
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2015-10-27 09:34:43 +0100
commit8421d212e831cb03ba65bada57a733ad875286bf (patch)
treeb4e2e94c8afb501e3ee3dcee87cdc9f90f4cfa12 /drivers/s390/cio
parents390/topology: reduce per_cpu() invocations (diff)
downloadlinux-8421d212e831cb03ba65bada57a733ad875286bf.tar.xz
linux-8421d212e831cb03ba65bada57a733ad875286bf.zip
s390/cio: move ccw_device_call_handler
device_ops.c should only contain functions that are called by ccw device drivers. Move the cio internal function ccw_device_call_handler to device_fsm.c where it's used. Remove some useless comments while at it. Acked-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/cio')
-rw-r--r--drivers/s390/cio/device.h2
-rw-r--r--drivers/s390/cio/device_fsm.c38
-rw-r--r--drivers/s390/cio/device_ops.c46
3 files changed, 38 insertions, 48 deletions
diff --git a/drivers/s390/cio/device.h b/drivers/s390/cio/device.h
index 6b17119c9929..23c1e19776d8 100644
--- a/drivers/s390/cio/device.h
+++ b/drivers/s390/cio/device.h
@@ -128,8 +128,6 @@ void ccw_device_disband_done(struct ccw_device *, int);
void ccw_device_stlck_start(struct ccw_device *, void *, void *, void *);
void ccw_device_stlck_done(struct ccw_device *, void *, int);
-int ccw_device_call_handler(struct ccw_device *);
-
int ccw_device_stlck(struct ccw_device *);
/* Helper function for machine check handling. */
diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c
index 83da53c8e54c..92e03b42e661 100644
--- a/drivers/s390/cio/device_fsm.c
+++ b/drivers/s390/cio/device_fsm.c
@@ -731,6 +731,44 @@ static void ccw_device_boxed_verify(struct ccw_device *cdev,
}
/*
+ * Pass interrupt to device driver.
+ */
+static int ccw_device_call_handler(struct ccw_device *cdev)
+{
+ unsigned int stctl;
+ int ending_status;
+
+ /*
+ * we allow for the device action handler if .
+ * - we received ending status
+ * - the action handler requested to see all interrupts
+ * - we received an intermediate status
+ * - fast notification was requested (primary status)
+ * - unsolicited interrupts
+ */
+ stctl = scsw_stctl(&cdev->private->irb.scsw);
+ ending_status = (stctl & SCSW_STCTL_SEC_STATUS) ||
+ (stctl == (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)) ||
+ (stctl == SCSW_STCTL_STATUS_PEND);
+ if (!ending_status &&
+ !cdev->private->options.repall &&
+ !(stctl & SCSW_STCTL_INTER_STATUS) &&
+ !(cdev->private->options.fast &&
+ (stctl & SCSW_STCTL_PRIM_STATUS)))
+ return 0;
+
+ if (ending_status)
+ ccw_device_set_timeout(cdev, 0);
+
+ if (cdev->handler)
+ cdev->handler(cdev, cdev->private->intparm,
+ &cdev->private->irb);
+
+ memset(&cdev->private->irb, 0, sizeof(struct irb));
+ return 1;
+}
+
+/*
* Got an interrupt for a normal io (state online).
*/
static void
diff --git a/drivers/s390/cio/device_ops.c b/drivers/s390/cio/device_ops.c
index 6acd0b577694..5be77254547c 100644
--- a/drivers/s390/cio/device_ops.c
+++ b/drivers/s390/cio/device_ops.c
@@ -412,52 +412,6 @@ int ccw_device_resume(struct ccw_device *cdev)
return cio_resume(sch);
}
-/*
- * Pass interrupt to device driver.
- */
-int
-ccw_device_call_handler(struct ccw_device *cdev)
-{
- unsigned int stctl;
- int ending_status;
-
- /*
- * we allow for the device action handler if .
- * - we received ending status
- * - the action handler requested to see all interrupts
- * - we received an intermediate status
- * - fast notification was requested (primary status)
- * - unsolicited interrupts
- */
- stctl = scsw_stctl(&cdev->private->irb.scsw);
- ending_status = (stctl & SCSW_STCTL_SEC_STATUS) ||
- (stctl == (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)) ||
- (stctl == SCSW_STCTL_STATUS_PEND);
- if (!ending_status &&
- !cdev->private->options.repall &&
- !(stctl & SCSW_STCTL_INTER_STATUS) &&
- !(cdev->private->options.fast &&
- (stctl & SCSW_STCTL_PRIM_STATUS)))
- return 0;
-
- /* Clear pending timers for device driver initiated I/O. */
- if (ending_status)
- ccw_device_set_timeout(cdev, 0);
- /*
- * Now we are ready to call the device driver interrupt handler.
- */
- if (cdev->handler)
- cdev->handler(cdev, cdev->private->intparm,
- &cdev->private->irb);
-
- /*
- * Clear the old and now useless interrupt response block.
- */
- memset(&cdev->private->irb, 0, sizeof(struct irb));
-
- return 1;
-}
-
/**
* ccw_device_get_ciw() - Search for CIW command in extended sense data.
* @cdev: ccw device to inspect