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authorPeter Oberparleiter <peter.oberparleiter@de.ibm.com>2011-09-26 16:40:35 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2011-09-26 16:40:50 +0200
commita681887f7b0f8b7698e4b22f1191015424fa96e4 (patch)
tree0d93e813b7e339a14aea60dc27b4e890b863997e
parent05873df981ca1dd32f398e7b4e19864de907e064 (diff)
downloadlinux-3.0-android-ux500-a681887f7b0f8b7698e4b22f1191015424fa96e4.tar.gz
[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: Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
-rw-r--r--drivers/s390/cio/cio.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index cbde448f994..eb3140ee821 100644
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -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)