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[4/5] PCI: hv: hv_compose_msi_msg: handle the 'ret' value

Message ID MWHPR03MB266954FABD2DD49DC19CF106BFEB0@MWHPR03MB2669.namprd03.prod.outlook.com
State Accepted
Headers show

Commit Message

Dexuan Cui Aug. 23, 2016, 4:48 a.m. UTC 
I happened to find this when reading the code.
I didn't get a real issue however.

Cc: Jake Oshins <jakeo@microsoft.com>
Cc: K. Y. Srinivasan <kys@microsoft.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Dexuan Cui <decui@microsoft.com>
---
 drivers/pci/host/pci-hyperv.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
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Patch

diff --git a/drivers/pci/host/pci-hyperv.c b/drivers/pci/host/pci-hyperv.c
index aef2e1e..f337239 100644
--- a/drivers/pci/host/pci-hyperv.c
+++ b/drivers/pci/host/pci-hyperv.c
@@ -893,8 +893,10 @@  static void hv_compose_msi_msg(struct irq_data *data, struct msi_msg *msg)
 			       sizeof(*int_pkt), (unsigned long)&ctxt.pkt,
 			       VM_PKT_DATA_INBAND,
 			       VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
-	if (!ret)
-		wait_for_completion(&comp.comp_pkt.host_event);
+	if (ret)
+		goto free_int_desc;
+
+	wait_for_completion(&comp.comp_pkt.host_event);
 
 	if (comp.comp_pkt.completion_status < 0) {
 		dev_err(&hbus->hdev->device,