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authorHeiko Carstens <heiko.carstens@de.ibm.com>2012-03-11 11:59:31 -0400
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2012-03-11 11:59:29 -0400
commitfde15c3a3adc7b65cd0610dd6bca4804ee7ffd38 (patch)
tree62c1f93d33a7449fb07250993e4cf4086d5aa273 /drivers/s390/kvm/kvm_virtio.c
parent2215011dd9c1b01f1fc430620ed31f2baad267c3 (diff)
downloadlinux-fde15c3a3adc7b65cd0610dd6bca4804ee7ffd38.tar.bz2
[S390] irq: external interrupt code passing
The external interrupt handlers have a parameter called ext_int_code. Besides the name this paramter does not only contain the ext_int_code but in addition also the "cpu address" (POP) which caused the external interrupt. To make the code a bit more obvious pass a struct instead so the called function can easily distinguish between external interrupt code and cpu address. The cpu address field however is named "subcode" since some external interrupt sources do not pass a cpu address but a different parameter (or none at all). Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/kvm/kvm_virtio.c')
-rw-r--r--drivers/s390/kvm/kvm_virtio.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/s390/kvm/kvm_virtio.c b/drivers/s390/kvm/kvm_virtio.c
index 7bc1955337ea..d74e9ae6dfb3 100644
--- a/drivers/s390/kvm/kvm_virtio.c
+++ b/drivers/s390/kvm/kvm_virtio.c
@@ -380,15 +380,13 @@ static void hotplug_devices(struct work_struct *dummy)
/*
* we emulate the request_irq behaviour on top of s390 extints
*/
-static void kvm_extint_handler(unsigned int ext_int_code,
+static void kvm_extint_handler(struct ext_code ext_code,
unsigned int param32, unsigned long param64)
{
struct virtqueue *vq;
- u16 subcode;
u32 param;
- subcode = ext_int_code >> 16;
- if ((subcode & 0xff00) != VIRTIO_SUBCODE_64)
+ if ((ext_code.subcode & 0xff00) != VIRTIO_SUBCODE_64)
return;
kstat_cpu(smp_processor_id()).irqs[EXTINT_VRT]++;