diff mbox series

[5.6,040/161] PCI/PM: Adjust pcie_wait_for_link_delay() for caller delay

Message ID 20200616153108.286969525@linuxfoundation.org
State Superseded
Headers show
Series None | expand

Commit Message

Greg KH June 16, 2020, 3:33 p.m. UTC 
From: Bjorn Helgaas <bhelgaas@google.com>

[ Upstream commit f044baaff1eb7ae5aa7a36f1b7ad5bd8eeb672c4 ]

The caller of pcie_wait_for_link_delay() specifies the time to wait after
the link becomes active.  When the downstream port doesn't support link
active reporting, obviously we can't tell when the link becomes active, so
we waited the worst-case time (1000 ms) plus 100 ms, ignoring the delay
from the caller.

Instead, wait for 1000 ms + the delay from the caller.

Fixes: 4827d63891b6 ("PCI/PM: Add pcie_wait_for_link_delay()")
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/pci/pci.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index d828ca835a98..fe9fbb74ce72 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -4616,10 +4616,10 @@  static bool pcie_wait_for_link_delay(struct pci_dev *pdev, bool active,
 
 	/*
 	 * Some controllers might not implement link active reporting. In this
-	 * case, we wait for 1000 + 100 ms.
+	 * case, we wait for 1000 ms + any delay requested by the caller.
 	 */
 	if (!pdev->link_active_reporting) {
-		msleep(1100);
+		msleep(timeout + delay);
 		return true;
 	}