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path: root/drivers/pci/host/pci-hyperv.c
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Diffstat (limited to 'drivers/pci/host/pci-hyperv.c')
-rw-r--r--drivers/pci/host/pci-hyperv.c30
1 files changed, 17 insertions, 13 deletions
diff --git a/drivers/pci/host/pci-hyperv.c b/drivers/pci/host/pci-hyperv.c
index 7e9b2de2aa24..6955ffdb89f3 100644
--- a/drivers/pci/host/pci-hyperv.c
+++ b/drivers/pci/host/pci-hyperv.c
@@ -732,16 +732,18 @@ static void hv_msi_free(struct irq_domain *domain, struct msi_domain_info *info,
pdev = msi_desc_to_pci_dev(msi);
hbus = info->data;
- hpdev = get_pcichild_wslot(hbus, devfn_to_wslot(pdev->devfn));
- if (!hpdev)
+ int_desc = irq_data_get_irq_chip_data(irq_data);
+ if (!int_desc)
return;
- int_desc = irq_data_get_irq_chip_data(irq_data);
- if (int_desc) {
- irq_data->chip_data = NULL;
- hv_int_desc_free(hpdev, int_desc);
+ irq_data->chip_data = NULL;
+ hpdev = get_pcichild_wslot(hbus, devfn_to_wslot(pdev->devfn));
+ if (!hpdev) {
+ kfree(int_desc);
+ return;
}
+ hv_int_desc_free(hpdev, int_desc);
put_pcichild(hpdev, hv_pcidev_ref_by_slot);
}
@@ -1657,14 +1659,16 @@ static void hv_pci_onchannelcallback(void *context)
continue;
}
+ /* Zero length indicates there are no more packets. */
+ if (ret || !bytes_recvd)
+ break;
+
/*
* All incoming packets must be at least as large as a
* response.
*/
- if (bytes_recvd <= sizeof(struct pci_response)) {
- kfree(buffer);
- return;
- }
+ if (bytes_recvd <= sizeof(struct pci_response))
+ continue;
desc = (struct vmpacket_descriptor *)buffer;
switch (desc->type) {
@@ -1679,8 +1683,7 @@ static void hv_pci_onchannelcallback(void *context)
comp_packet->completion_func(comp_packet->compl_ctxt,
response,
bytes_recvd);
- kfree(buffer);
- return;
+ break;
case VM_PKT_DATA_INBAND:
@@ -1727,8 +1730,9 @@ static void hv_pci_onchannelcallback(void *context)
desc->type, req_id, bytes_recvd);
break;
}
- break;
}
+
+ kfree(buffer);
}
/**