diff options
| author | Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> | 2024-10-18 17:47:48 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2024-10-23 16:50:02 -0500 |
| commit | 04af8a399fa40310f831b4f1dc9f757085f41983 (patch) | |
| tree | f8191c9677aa4d0ace2d012d832aa09c5012e14c /include/linux | |
| parent | fad610b987132868e3410c530871086552ce6155 (diff) | |
PCI: Protect Link Control 2 Register with RMW locking
The 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.
Link: https://lore.kernel.org/r/20241018144755.7875-3-ilpo.jarvinen@linux.intel.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Lukas Wunner <lukas@wunner.de>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/pci.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h index 573b4c4c2be6..be5ed534c39c 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -1274,6 +1274,7 @@ 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); |