diff mbox series

[01/10] PCI: Protect Link Control 2 Register with RMW locking

Message ID 20230817121708.53213-2-ilpo.jarvinen@linux.intel.com
State New
Headers show
Series Add PCIe Bandwidth Controller | expand

Commit Message

Ilpo Järvinen Aug. 17, 2023, 12:16 p.m. UTC 
PCIe Bandwidth Controller performs RMW accesses the Link Control 2
Register which can occur concurrently to other sources of Link Control
2 Register writes. Therefore, add Link Control 2 Register among the PCI
Express Capability Registers that need RMW locking.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
---
 include/linux/pci.h | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/include/linux/pci.h b/include/linux/pci.h
index 7ee498cd1f37..7b2927a90ee0 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -1243,6 +1243,7 @@  static inline int pcie_capability_clear_and_set_word(struct pci_dev *dev,
 {
 	switch (pos) {
 	case PCI_EXP_LNKCTL:
+	case PCI_EXP_LNKCTL2:
 	case PCI_EXP_RTCTL:
 		return pcie_capability_clear_and_set_word_locked(dev, pos,
 								 clear, set);