Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 8c3ce5be authored by Cornelia Huck's avatar Cornelia Huck Committed by Martin Schwidefsky
Browse files

[S390] cio: Fix handling of interrupt for csch(). 



Wipe internal irb if the clear function bit is set before accumulating
bits from the irb in order to follow hardware behaviour.

Signed-off-by: default avatarCornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 6e1beb3c

drivers/s390/cio/device_status.c

+8 −0
Original line number Diff line number Diff line
@@ -221,6 +221,14 @@ ccw_device_accumulate_irb(struct ccw_device *cdev, struct irb *irb) 


	cdev_irb = &cdev->private->irb;



	/*

	 * If the clear function had been performed, all formerly pending

	 * status at the subchannel has been cleared and we must not pass

	 * intermediate accumulated status to the device driver.

	 */

	if (irb->scsw.fctl & SCSW_FCTL_CLEAR_FUNC)

		memset(&cdev->private->irb, 0, sizeof(struct irb));



	/* Copy bits which are valid only for the start function. */

	if (irb->scsw.fctl & SCSW_FCTL_START_FUNC) {

		/* Copy key. */