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vmd: increment dev_cnt once device is initialized

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This is done in order to avoid having to decrement this counter in case
of a failure.  Also, it makes the result valid for the few error cases
when we didn't decrement it.

Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Change-Id: Ia944fb8b810ce69caa8db5bc7c941e0905c9d3bd
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/13954
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Tom Nabarro <tom.nabarro@intel.com>
This commit is contained in:
Konrad Sztyber 2022-08-09 05:46:34 +02:00 committed by Tomasz Zawadzki
parent f0441b29db
commit ee1ab6f6be
1 changed files with 3 additions and 4 deletions
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7
lib/vmd/vmd.c
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@ -967,7 +967,6 @@ vmd_scan_single_bus(struct vmd_pci_bus *bus, struct vmd_pci_device *parent_bridg
continue;
}
dev_cnt++;
if (new_dev->header->common.header_type & PCI_HEADER_TYPE_BRIDGE) {
slot_cap.as_uint32_t = 0;
if (new_dev->pcie_cap != NULL) {
@ -1009,6 +1008,7 @@ vmd_scan_single_bus(struct vmd_pci_bus *bus, struct vmd_pci_device *parent_bridg
TAILQ_INSERT_TAIL(&bus->vmd->bus_list, new_bus, tailq);
vmd_dev_init(new_dev);
dev_cnt++;
if (slot_cap.bit_field.hotplug_capable && new_dev->pcie_cap != NULL &&
new_dev->pcie_cap->express_cap_register.bit_field.slot_implemented) {
@ -1025,9 +1025,8 @@ vmd_scan_single_bus(struct vmd_pci_bus *bus, struct vmd_pci_device *parent_bridg
rc = vmd_init_end_device(new_dev);
if (rc != 0) {
vmd_dev_free(new_dev);
if (dev_cnt) {
dev_cnt--;
}
} else {
dev_cnt++;
}
}
}