From: Peter Oberparleiter 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 Signed-off-by: Martin Schwidefsky --- drivers/s390/cio/device.c | 5 +---- 1 file changed, 1 insertion(+), 4 deletions(-) Index: quilt-2.6/drivers/s390/cio/device.c =================================================================== --- quilt-2.6.orig/drivers/s390/cio/device.c 2009-11-13 16:08:17.000000000 +0100 +++ quilt-2.6/drivers/s390/cio/device.c 2009-11-13 16:08:17.000000000 +0100 @@ -888,9 +888,6 @@ 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 @@ int rc; struct ccw_device_private *priv; - sch_set_cdev(sch, cdev); cdev->ccwlock = sch->lock; /* Init private data. */ @@ -1125,6 +1121,7 @@ /* 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) { -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/