PCI: Fix 64GT/s effective data rate calculation

Unlike the lower rates, the PCIe 64GT/s Data Rate uses 1b/1b encoding, not
128b/130b (PCIe r6.1 sec 1.2, Table 1-1).  Correct the PCIE_SPEED2MBS_ENC()
calculation to reflect that.

Link: https://lore.kernel.org/r/20240102172701.65501-1-ilpo.jarvinen@linux.intel.com
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index 5ecbcf0411793e2242121d00ee776b3cd8f5d294..d9132029d6584c97333dce276a6ba23e2ce768e9 100644 (file)
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -272,7 +272,7 @@ void pci_bus_put(struct pci_bus *bus);
 
 /* PCIe speed to Mb/s reduced by encoding overhead */
 #define PCIE_SPEED2MBS_ENC(speed) \
-       ((speed) == PCIE_SPEED_64_0GT ? 64000*128/130 : \
+       ((speed) == PCIE_SPEED_64_0GT ? 64000*1/1 : \
         (speed) == PCIE_SPEED_32_0GT ? 32000*128/130 : \
         (speed) == PCIE_SPEED_16_0GT ? 16000*128/130 : \
         (speed) == PCIE_SPEED_8_0GT  ?  8000*128/130 : \