Patch "PCI: Fix 64GT/s effective data rate calculation" has been added to the 6.6-stable tree

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This is a note to let you know that I've just added the patch titled

    PCI: Fix 64GT/s effective data rate calculation

to the 6.6-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     pci-fix-64gt-s-effective-data-rate-calculation.patch
and it can be found in the queue-6.6 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 4d3e260c1db1dd142cfe146c15ffda2534e34306
Author: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx>
Date:   Tue Jan 2 19:27:00 2024 +0200

    PCI: Fix 64GT/s effective data rate calculation
    
    [ Upstream commit ac4f1897fa5433a1b07a625503a91b6aa9d7e643 ]
    
    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@xxxxxxxxxxxxxxx
    Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx>
    Signed-off-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h
index 5484048f457d..99abc4cec0df 100644
--- a/drivers/pci/pci.h
+++ b/drivers/pci/pci.h
@@ -269,7 +269,7 @@ 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 : \




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