[PATCH v6 1/7] PCI: Export PCI link retrain timeout
From: "Maciej W. Rozycki" <macro@orcam.me.uk>
Date: 2023-02-05 15:49:07
Also in:
linux-pci, linux-rdma, linuxppc-dev, lkml
Rename LINK_RETRAIN_TIMEOUT to PCIE_LINK_RETRAIN_TIMEOUT and make it available via "pci.h" for PCI drivers to use. Signed-off-by: Maciej W. Rozycki <macro@orcam.me.uk> --- No change from v5. New change in v5. --- drivers/pci/pci.h | 2 ++ drivers/pci/pcie/aspm.c | 4 +--- 2 files changed, 3 insertions(+), 3 deletions(-) linux-pcie-link-retrain-timeout.diff Index: linux-macro/drivers/pci/pci.h ===================================================================
--- linux-macro.orig/drivers/pci/pci.h
+++ linux-macro/drivers/pci/pci.h@@ -11,6 +11,8 @@ #define PCI_VSEC_ID_INTEL_TBT 0x1234 /* Thunderbolt */ +#define PCIE_LINK_RETRAIN_TIMEOUT HZ + extern const unsigned char pcie_link_speed[]; extern bool pci_early_dump;
Index: linux-macro/drivers/pci/pcie/aspm.c ===================================================================
--- linux-macro.orig/drivers/pci/pcie/aspm.c
+++ linux-macro/drivers/pci/pcie/aspm.c@@ -90,8 +90,6 @@ static const char *policy_str[] = { [POLICY_POWER_SUPERSAVE] = "powersupersave" }; -#define LINK_RETRAIN_TIMEOUT HZ - /* * The L1 PM substate capability is only implemented in function 0 in a * multi function device.
@@ -213,7 +211,7 @@ static bool pcie_retrain_link(struct pci } /* Wait for link training end. Break out after waiting for timeout */ - end_jiffies = jiffies + LINK_RETRAIN_TIMEOUT; + end_jiffies = jiffies + PCIE_LINK_RETRAIN_TIMEOUT; do { pcie_capability_read_word(parent, PCI_EXP_LNKSTA, ®16); if (!(reg16 & PCI_EXP_LNKSTA_LT))