From: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx> This patch uses the lower 16 bits of the serial number as PCI domain, otherwise some drivers may not be able to handle it. Signed-off-by: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx> --- drivers/pci/host/pci-hyperv.c | 4 +++- 1 files changed, 3 insertions(+), 1 deletions(-) diff --git a/drivers/pci/host/pci-hyperv.c b/drivers/pci/host/pci-hyperv.c index e73880c..b18dff3 100644 --- a/drivers/pci/host/pci-hyperv.c +++ b/drivers/pci/host/pci-hyperv.c @@ -1334,9 +1334,11 @@ static void put_pcichild(struct hv_pci_dev *hpdev, * can have shorter names than based on the bus instance UUID. * Only the first device serial number is used for domain, so the * domain number will not change after the first device is added. + * The lower 16 bits of the serial number is used, otherwise some + * drivers may not be able to handle it. */ if (list_empty(&hbus->children)) - hbus->sysdata.domain = desc->ser; + hbus->sysdata.domain = desc->ser & 0xFFFF; list_add_tail(&hpdev->list_entry, &hbus->children); spin_unlock_irqrestore(&hbus->device_list_lock, flags); return hpdev; -- 1.7.1
