Currently there are no reliable way to determine if a driver uses BARs of
its devices (their struct resource don't always have a child), so if it
doesn't explicitly support movable BARs, they are considered fixed.
The portdrv driver for PCI switches don't use BARs, so add a new hook
.bar_fixed() { return false; } to increase the chances to allocate new
BARs for new devices.
Signed-off-by: Sergei Miroshnichenko <s.miroshnichenko@xxxxxxxxx>
---
drivers/pci/pcie/portdrv_pci.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/pci/pcie/portdrv_pci.c b/drivers/pci/pcie/portdrv_pci.c
index 0b250bc5f405..3043f7e4d3c1 100644
--- a/drivers/pci/pcie/portdrv_pci.c
+++ b/drivers/pci/pcie/portdrv_pci.c
@@ -212,6 +212,11 @@ static const struct pci_error_handlers pcie_portdrv_err_handler = {
.resume = pcie_portdrv_err_resume,
};
+static bool pcie_portdrv_bar_fixed(struct pci_dev *pdev, int resno)
+{
+ return false;
+}
+
static struct pci_driver pcie_portdriver = {
.name = "pcieport",
.id_table = &port_pci_ids[0],
@@ -222,6 +227,8 @@ static struct pci_driver pcie_portdriver = {
.err_handler = &pcie_portdrv_err_handler,
+ .bar_fixed = pcie_portdrv_bar_fixed,
+
.driver.pm = PCIE_PORTDRV_PM_OPS,
};
--
2.24.1
