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| author | Ilpo Järvinen <ilpo.jarvinen@linux.intel.com> | 2024-01-02 20:27:00 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2024-01-02 21:06:47 +0300 |
| commit | ac4f1897fa5433a1b07a625503a91b6aa9d7e643 (patch) | |
| tree | af0d274592e0c6e62f1fb5c09b252b47b7ac41ab | |
| parent | 0d481ff35c9a85d775e5544bb2e331e7d5eb6c3c (diff) | |
| download | linux-ac4f1897fa5433a1b07a625503a91b6aa9d7e643.tar.xz | |
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>
| -rw-r--r-- | drivers/pci/pci.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index 5ecbcf041179..d9132029d658 100644 --- 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 : \ |