linux-kernel - [PATCH v3 3/8] PCI: Add macro for link status check delay

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Message-Id: <20250826170315.721551-4-18255117159@163.com>
Date: Wed, 27 Aug 2025 01:03:10 +0800
From: Hans Zhang <18255117159@....com>
To: bhelgaas@...gle.com,
	helgaas@...nel.org,
	linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: Hans Zhang <18255117159@....com>
Subject: [PATCH v3 3/8] PCI: Add macro for link status check delay

Add PCIE_LINK_STATUS_CHECK_MS macro for link status check delay.

Signed-off-by: Hans Zhang <18255117159@....com>
---
 drivers/pci/pci.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 81105dfc2f62..f5f5474d9aba 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -77,6 +77,8 @@ struct pci_pme_device {
  */
 #define PCIE_RESET_READY_POLL_MS 60000 /* msec */
 
+#define PCIE_LINK_STATUS_CHECK_MS 1
+
 static void pci_dev_d3_sleep(struct pci_dev *dev)
 {
 	unsigned int delay_ms = max(dev->d3hot_delay, pci_pm_d3hot_delay);
@@ -4683,7 +4685,7 @@ static int pcie_wait_for_link_status(struct pci_dev *pdev,
 		pcie_capability_read_word(pdev, PCI_EXP_LNKSTA, &lnksta);
 		if ((lnksta & lnksta_mask) == lnksta_match)
 			return 0;
-		msleep(1);
+		msleep(PCIE_LINK_STATUS_CHECK_MS);
 	} while (time_before(jiffies, end_jiffies));
 
 	return -ETIMEDOUT;
-- 
2.25.1