linux-kernel - [PATCH v3 0/5] PCI: Endpoint: Miscellaneous improvements

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Date:   Mon, 24 Feb 2020 15:23:33 +0530
From:   Kishon Vijay Abraham I <kishon@...com>
To:     Kishon Vijay Abraham I <kishon@...com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>
CC:     Bjorn Helgaas <bhelgaas@...gle.com>, <linux-pci@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH v3 0/5] PCI: Endpoint: Miscellaneous improvements

Changes from v2:
*) Added "Tested-by" tag from Vidya Sagar
*) Added stable fixes tag to "Fix for concurrent memory allocation in
   OB address region"
   
Changes from v1:
Rebased to Linux 5.6-rc1 and removed dependencies to my other series
to unblock [1]

[1] -> http://lore.kernel.org/r/20200103100736.27627-1-vidyas@nvidia.com

v1 of this patch series can be found @
http://lore.kernel.org/r/20191231100331.6316-1-kishon@ti.com

This series adds miscellaneous improvements to PCIe endpoint core.
1) Protect concurrent access to memory allocation in pci-epc-mem
2) Replace spinlock with mutex in pci-epc-core and also use
   notification chain mechanism to notify EPC events to EPF driver.
3) Since endpoint function device can be created by multiple
   mechanisms (configfs, devicetree, etc..), allowing each of these
   mechanisms to assign a function number would result in mutliple
   endpoint function devices having the same function number. In order
   to avoid this, let EPC core assign a function number to the
   endpoint device.

Kishon Vijay Abraham I (5):
  PCI: endpoint: Use notification chain mechanism to notify EPC events
    to EPF
  PCI: endpoint: Replace spinlock with mutex
  PCI: endpoint: Fix for concurrent memory allocation in OB address
    region
  PCI: endpoint: Protect concurrent access to pci_epf_ops with mutex
  PCI: endpoint: Assign function number for each PF in EPC core

 drivers/pci/endpoint/functions/pci-epf-test.c |  13 +-
 drivers/pci/endpoint/pci-ep-cfs.c             |  27 +----
 drivers/pci/endpoint/pci-epc-core.c           | 113 ++++++++----------
 drivers/pci/endpoint/pci-epc-mem.c            |  10 +-
 drivers/pci/endpoint/pci-epf-core.c           |  33 ++---
 include/linux/pci-epc.h                       |  19 ++-
 include/linux/pci-epf.h                       |   9 +-
 7 files changed, 108 insertions(+), 116 deletions(-)

-- 
2.17.1