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authorYi Min Zhao <zyimin@linux.vnet.ibm.com>2016-04-26 19:26:32 +0800
committerCornelia Huck <cornelia.huck@de.ibm.com>2016-05-17 15:50:29 +0200
commitbac45d5147fbe832428944610c70484b18539292 (patch)
treee2c87df29ad3edad3eec01b3910b24b59d20d21b
parent3f6ec642ae84cde9375bd4e624ab4e3fe23f60b9 (diff)
downloadqemu-arm-bac45d5147fbe832428944610c70484b18539292.tar.gz
s390x/pci: fix reg_irqs()
In reg_irqs(), present code assumes that map_indicator() always issues successfully. Let's check it and return the error to caller in order to inform guest. Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com> Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Reviewed-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
-rw-r--r--hw/s390x/s390-pci-inst.c17
1 files changed, 15 insertions, 2 deletions
diff --git a/hw/s390x/s390-pci-inst.c b/hw/s390x/s390-pci-inst.c
index b28e7d14f8..90d9fda77c 100644
--- a/hw/s390x/s390-pci-inst.c
+++ b/hw/s390x/s390-pci-inst.c
@@ -634,8 +634,15 @@ static int reg_irqs(CPUS390XState *env, S390PCIBusDevice *pbdev, ZpciFib fib)
len = BITS_TO_LONGS(FIB_DATA_NOI(ldl_p(&fib.data))) * sizeof(unsigned long);
pbdev->indicator = get_indicator(ldq_p(&fib.aibv), len);
- map_indicator(&pbdev->routes.adapter, pbdev->summary_ind);
- map_indicator(&pbdev->routes.adapter, pbdev->indicator);
+ ret = map_indicator(&pbdev->routes.adapter, pbdev->summary_ind);
+ if (ret) {
+ goto out;
+ }
+
+ ret = map_indicator(&pbdev->routes.adapter, pbdev->indicator);
+ if (ret) {
+ goto out;
+ }
pbdev->routes.adapter.summary_addr = ldq_p(&fib.aisb);
pbdev->routes.adapter.summary_offset = FIB_DATA_AISBO(ldl_p(&fib.data));
@@ -647,6 +654,12 @@ static int reg_irqs(CPUS390XState *env, S390PCIBusDevice *pbdev, ZpciFib fib)
DPRINTF("reg_irqs adapter id %d\n", pbdev->routes.adapter.adapter_id);
return 0;
+out:
+ release_indicator(&pbdev->routes.adapter, pbdev->summary_ind);
+ release_indicator(&pbdev->routes.adapter, pbdev->indicator);
+ pbdev->summary_ind = NULL;
+ pbdev->indicator = NULL;
+ return ret;
}
static int dereg_irqs(S390PCIBusDevice *pbdev)