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[S390] cio: fix repeat setting of cdev parent association

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sch_create_and_recog_new_device() associates a parent subchannel
with its ccw device child even though this is already done by
the subsequently called io_subchannel_recog(). Also make sure
io_subchannel_recog() sets the association under lock.

Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Peter Oberparleiter 2009-12-07 12:51:16 +01:00 committed by Martin Schwidefsky
parent 48e4c385c5
commit 60e4dac1ab
1 changed files with 1 additions and 4 deletions
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5
drivers/s390/cio/device.c
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@ -888,9 +888,6 @@ static void sch_create_and_recog_new_device(struct subchannel *sch)
css_sch_device_unregister(sch);
return;
}
spin_lock_irq(sch->lock);
sch_set_cdev(sch, cdev);
spin_unlock_irq(sch->lock);
/* Start recognition for the new ccw device. */
if (io_subchannel_recog(cdev, sch)) {
spin_lock_irq(sch->lock);
@ -1107,7 +1104,6 @@ io_subchannel_recog(struct ccw_device *cdev, struct subchannel *sch)
int rc;
struct ccw_device_private *priv;
sch_set_cdev(sch, cdev);
cdev->ccwlock = sch->lock;
/* Init private data. */
@ -1125,6 +1121,7 @@ io_subchannel_recog(struct ccw_device *cdev, struct subchannel *sch)
/* Start async. device sensing. */
spin_lock_irq(sch->lock);
sch_set_cdev(sch, cdev);
rc = ccw_device_recognition(cdev);
spin_unlock_irq(sch->lock);
if (rc) {