Use pci_bus_speed_strings[] array to refactor PCIE_SPEED2STR
macro. Rename it with PCI_SPEED2STR as it can also be used to
decode non-PCIe speeds with pci_bus_speed_strings[].
Signed-off-by: Yicong Yang <yangyicong@xxxxxxxxxxxxx>
---
drivers/pci/pci-sysfs.c | 2 +-
drivers/pci/pci.c | 6 +++---
drivers/pci/pci.h | 10 +++-------
3 files changed, 7 insertions(+), 11 deletions(-)
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c
index 13f766d..f4eafbc 100644
--- a/drivers/pci/pci-sysfs.c
+++ b/drivers/pci/pci-sysfs.c
@@ -156,7 +156,7 @@ static ssize_t max_link_speed_show(struct device *dev,
{
struct pci_dev *pdev = to_pci_dev(dev);
- return sprintf(buf, "%s\n", PCIE_SPEED2STR(pcie_get_speed_cap(pdev)));
+ return sprintf(buf, "%s\n", PCI_SPEED2STR(pcie_get_speed_cap(pdev)));
}
static DEVICE_ATTR_RO(max_link_speed);
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index d828ca8..e8d3c39 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -5872,14 +5872,14 @@ void __pcie_print_link_status(struct pci_dev *dev, bool verbose)
if (bw_avail >= bw_cap && verbose)
pci_info(dev, "%u.%03u Gb/s available PCIe bandwidth (%s x%d link)\n",
bw_cap / 1000, bw_cap % 1000,
- PCIE_SPEED2STR(speed_cap), width_cap);
+ PCI_SPEED2STR(speed_cap), width_cap);
else if (bw_avail < bw_cap)
pci_info(dev, "%u.%03u Gb/s available PCIe bandwidth, limited by %s x%d link at %s (capable of %u.%03u Gb/s with %s x%d link)\n",
bw_avail / 1000, bw_avail % 1000,
- PCIE_SPEED2STR(speed), width,
+ PCI_SPEED2STR(speed), width,
limiting_dev ? pci_name(limiting_dev) : "<unknown>",
bw_cap / 1000, bw_cap % 1000,
- PCIE_SPEED2STR(speed_cap), width_cap);
+ PCI_SPEED2STR(speed_cap), width_cap);
}
/**
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index d2e92b0f..ba6b2cb 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -295,13 +295,9 @@ struct pci_bus *pci_bus_get(struct pci_bus *bus);
void pci_bus_put(struct pci_bus *bus);
/* PCIe link information */
-#define PCIE_SPEED2STR(speed) \
- ((speed) == PCIE_SPEED_32_0GT ? "32 GT/s" : \
- (speed) == PCIE_SPEED_16_0GT ? "16 GT/s" : \
- (speed) == PCIE_SPEED_8_0GT ? "8 GT/s" : \
- (speed) == PCIE_SPEED_5_0GT ? "5 GT/s" : \
- (speed) == PCIE_SPEED_2_5GT ? "2.5 GT/s" : \
- "Unknown speed")
+#define PCI_SPEED2STR(speed) \
+ ((speed) < pci_bus_speed_strings_size ? \
+ pci_bus_speed_strings[speed] : "Unknown speed")
/* PCIe speed to Mb/s reduced by encoding overhead */
#define PCIE_SPEED2MBS_ENC(speed) \
--
2.8.1
