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| author | Ashok Raj <ashok.raj@intel.com> | 2020-03-27 14:16:15 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-06-20 10:23:23 +0200 |
| commit | d6dd03a4080845eb7431c564213c3dea700137b7 (patch) | |
| tree | 76ecaf3213f59868864dd50fa7cc783e8d7df4df /scripts/objdiff | |
| parent | 0cd287657a1f9aa33c48dc7d4e521c60de61b68f (diff) | |
PCI: Program MPS for RCiEP devices
commit aa0ce96d72dd2e1b0dfd0fb868f82876e7790878 upstream.
Root Complex Integrated Endpoints (RCiEPs) do not have an upstream bridge,
so pci_configure_mps() previously ignored them, which may result in reduced
performance.
Instead, program the Max_Payload_Size of RCiEPs to the maximum supported
value (unless it is limited for the PCIE_BUS_PEER2PEER case). This also
affects the subsequent programming of Max_Read_Request_Size because Linux
programs MRRS based on the MPS value.
Fixes: 9dae3a97297f ("PCI: Move MPS configuration check to pci_configure_device()")
Link: https://lore.kernel.org/r/1585343775-4019-1-git-send-email-ashok.raj@intel.com
Tested-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'scripts/objdiff')
0 files changed, 0 insertions, 0 deletions