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[S390] cio: fix cio_tpi ignoring adapter interrupts

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

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
2011-09-26 16:40:35 +02:00
committed by Martin Schwidefsky
parent 05873df981
commit a681887f7b
1 changed files with 6 additions and 2 deletions
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8
drivers/s390/cio/cio.c
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@@ -654,8 +654,8 @@ static struct io_subchannel_private console_priv;
static int console_subchannel_in_use; static int console_subchannel_in_use;
/* /*
* Use tpi to get a pending interrupt, call the interrupt handler and * Use cio_tpi to get a pending interrupt and call the interrupt handler.
* return a pointer to the subchannel structure. * Return non-zero if an interrupt was processed, zero otherwise.
*/ */
static int cio_tpi(void) static int cio_tpi(void)
{ {
@@ -667,6 +667,10 @@ static int cio_tpi(void)
tpi_info = (struct tpi_info *)&S390_lowcore.subchannel_id; tpi_info = (struct tpi_info *)&S390_lowcore.subchannel_id;
if (tpi(NULL) != 1) if (tpi(NULL) != 1)
return 0; return 0;
if (tpi_info->adapter_IO) {
do_adapter_IO(tpi_info->isc);
return 1;
}
irb = (struct irb *)&S390_lowcore.irb; irb = (struct irb *)&S390_lowcore.irb;
/* Store interrupt response block to lowcore. */ /* Store interrupt response block to lowcore. */
if (tsch(tpi_info->schid, irb) != 0) if (tsch(tpi_info->schid, irb) != 0)