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Commit a681887f authored by Peter Oberparleiter's avatar Peter Oberparleiter Committed by Martin Schwidefsky
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[S390] cio: fix cio_tpi ignoring adapter interrupts 



Ensure that adapter interrupts are correctly processed when they are
retrieved using TEST PENDING INTERRUPTION.

Signed-off-by: default avatarPeter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 05873df9

drivers/s390/cio/cio.c

+6 −2
Original line number Diff line number Diff line
@@ -654,8 +654,8 @@ static struct io_subchannel_private console_priv; 
static int console_subchannel_in_use;



/*

 * Use tpi to get a pending interrupt, call the interrupt handler and

 * return a pointer to the subchannel structure.

 * Use cio_tpi to get a pending interrupt and call the interrupt handler.

 * Return non-zero if an interrupt was processed, zero otherwise.

 */

static int cio_tpi(void)

{
@@ -667,6 +667,10 @@ static int cio_tpi(void) 
	tpi_info = (struct tpi_info *)&S390_lowcore.subchannel_id;

	if (tpi(NULL) != 1)

		return 0;

	if (tpi_info->adapter_IO) {

		do_adapter_IO(tpi_info->isc);

		return 1;

	}

	irb = (struct irb *)&S390_lowcore.irb;

	/* Store interrupt response block to lowcore. */

	if (tsch(tpi_info->schid, irb) != 0)