This is similar to commit 62b6dee1b44aa23b39355 ("PCI/portdrv: Prevent
LS7A Bus Master clearing on shutdown"), which prevents LS7A Bus Master
clearing on kexec.
Only skip Bus Master clearing on bridges because endpoint devices still
need it.
Signed-off-by: Ming Wang <wangming01@xxxxxxxxxxx>
Signed-off-by: Huacai Chen <chenhuacai@xxxxxxxxxxx>
---
drivers/pci/pci-driver.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index f412ef73a6e4..b7d3a4d8532f 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -517,7 +517,7 @@ static void pci_device_shutdown(struct device *dev)
* If it is not a kexec reboot, firmware will hit the PCI
* devices with big hammer and stop their DMA any way.
*/
- if (kexec_in_progress && (pci_dev->current_state <= PCI_D3hot))
+ if (kexec_in_progress && !pci_is_bridge(pci_dev) && (pci_dev->current_state <= PCI_D3hot))
pci_clear_master(pci_dev);
}
--
2.43.5
