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 empty hooks
.rescan_prepare() and .rescan_done() to increase chances to allocate new
BARs for new devices.
Signed-off-by: Sergei Miroshnichenko <s.miroshnichenko@xxxxxxxxx>
---
drivers/pci/pcie/portdrv_pci.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/drivers/pci/pcie/portdrv_pci.c b/drivers/pci/pcie/portdrv_pci.c
index 160d67c59310..df1faf2fed86 100644
--- a/drivers/pci/pcie/portdrv_pci.c
+++ b/drivers/pci/pcie/portdrv_pci.c
@@ -205,6 +205,14 @@ static const struct pci_error_handlers pcie_portdrv_err_handler = {
.resume = pcie_portdrv_err_resume,
};
+static void pcie_portdrv_rescan_prepare(struct pci_dev *pdev)
+{
+}
+
+static void pcie_portdrv_rescan_done(struct pci_dev *pdev)
+{
+}
+
static struct pci_driver pcie_portdriver = {
.name = "pcieport",
.id_table = &port_pci_ids[0],
@@ -215,6 +223,9 @@ static struct pci_driver pcie_portdriver = {
.err_handler = &pcie_portdrv_err_handler,
+ .rescan_prepare = pcie_portdrv_rescan_prepare,
+ .rescan_done = pcie_portdrv_rescan_done,
+
.driver.pm = PCIE_PORTDRV_PM_OPS,
};
--
2.24.1
