From: Jakub Kicinski <kuba@xxxxxxxxxx>
[ Upstream commit ff3a52ab9cab01a53b168dc667fe789f56b90aa9 ]
Since 39850ed51062 ("PCI/PTM: Save/restore Precision Time Measurement
Capability for suspend/resume"), devices that have PTM capability but
don't enable it see this message on calls to pci_save_state():
no suspend buffer for PTM
Drop the message, it's perfectly fine not to use a capability.
Fixes: 39850ed51062 ("PCI/PTM: Save/restore Precision Time Measurement Capability for suspend/resume")
Link: https://lore.kernel.org/r/20210811185955.3112534-1-kuba@xxxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Acked-by: David E. Box <david.e.box@xxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/pci/pcie/ptm.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/pci/pcie/ptm.c b/drivers/pci/pcie/ptm.c
index 95d4eef2c9e8..4810faa67f52 100644
--- a/drivers/pci/pcie/ptm.c
+++ b/drivers/pci/pcie/ptm.c
@@ -60,10 +60,8 @@ void pci_save_ptm_state(struct pci_dev *dev)
return;
save_state = pci_find_saved_ext_cap(dev, PCI_EXT_CAP_ID_PTM);
- if (!save_state) {
- pci_err(dev, "no suspend buffer for PTM\n");
+ if (!save_state)
return;
- }
cap = (u16 *)&save_state->cap.data[0];
pci_read_config_word(dev, ptm + PCI_PTM_CTRL, cap);
--
2.30.2
