When echo a number to /sys/bus/pci/devices/xxx/sriov_numvfs to enable the
VF devices. A crash log occurred. This found to be access the IOV devices
config space failure issue.
The read/write config space from host would judge the pcie device plugin
or not by:
if (bus->primary == pp->root_bus_nr && dev > 0)
return 0;
Although all pcie devices for dev(coming from the device and function
number) is zero. But the dev is not zero for VF. So remove the
condition.
Signed-off-by: Po Liu <po.liu@xxxxxxx>
---
drivers/pci/host/pcie-designware.c | 7 -------
1 file changed, 7 deletions(-)
diff --git a/drivers/pci/host/pcie-designware.c b/drivers/pci/host/pcie-designware.c
index 12afce1..dd20eb2 100644
--- a/drivers/pci/host/pcie-designware.c
+++ b/drivers/pci/host/pcie-designware.c
@@ -670,13 +670,6 @@ static int dw_pcie_valid_config(struct pcie_port *pp,
if (bus->number == pp->root_bus_nr && dev > 0)
return 0;
- /*
- * do not read more than one device on the bus directly attached
- * to RC's (Virtual Bridge's) DS side.
- */
- if (bus->primary == pp->root_bus_nr && dev > 0)
- return 0;
-
return 1;
}
--
2.1.0.27.g96db324
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