linux

iv/linux

History

Ashok Raj 08727720bb 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>

2020-06-20 10:24:20 +02:00

host

PCI: keystone: Fix link training retries initiation

2020-02-14 16:31:00 -05:00

hotplug

PCI: rpadlpar: Fix leaked device_node references in add/remove paths

2019-06-22 08:17:16 +02:00

pcie

PCI/ASPM: Allow re-enabling Clock PM

2020-05-02 17:23:07 +02:00

access.c

PCI: Avoid possible deadlock on pci_lock and p->pi_lock