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From: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
To: Kishon Vijay Abraham I <kishon@ti.com>,
	Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
	Rob Herring <robh@kernel.org>,
	Bjorn Helgaas <bhelgaas@google.com>,
	Jingoo Han <jingoohan1@gmail.com>,
	Gustavo Pimentel <gustavo.pimentel@synopsys.com>
Cc: linux-omap@vger.kernel.org, linux-pci@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH v6 0/2] PCI: dwc: fix two MSI issues
Date: Fri, 9 Oct 2020 14:40:29 +0800	[thread overview]
Message-ID: <20201009144029.62f327a9@xhacker.debian> (raw)

Fix two MSI issues. One to skip PCIE_MSI_INTR0* programming if MSI is
disabled, another to use an address in the driver data for MSI address,
to fix the MSI page leakage during suspend/resume.

Since v5:
  - rebase on pci/dwc branch
  - add Acked-by tag

Since v4:
  - fix pci-dra7xx.c

Since v3:
  - add Acked-by tag
  - change patch2 commit msg to make it clear
  - map the MSI msg with dma_map_single_attrs() for some platforms
    which either has separate addrs for dma and phy or has mem access
    limitation for the PCIe.

Since v2:
  - add Acked-by tag
  - use an address in the driver data for MSI address. Thank Ard and Rob
    for pointing out this correct direction.
  - Since the MSI page has gone, the leak issue doesn't exist anymore,
    remove unnecessary patches.
  - Remove dw_pcie_free_msi rename and the last patch. They could be
    targeted to next. So will send out patches in a separate series.

Since v1:
  - add proper error handling patches.
  - solve the msi page leakage by moving dw_pcie_msi_init() from each
    users to designware host

Jisheng Zhang (2):
  PCI: dwc: Skip PCIE_MSI_INTR0* programming if MSI is disabled
  PCI: dwc: Fix MSI page leakage in suspend/resume

 drivers/pci/controller/dwc/pci-dra7xx.c       | 18 ++++++++-
 .../pci/controller/dwc/pcie-designware-host.c | 37 +++++++++----------
 drivers/pci/controller/dwc/pcie-designware.h  |  2 +-
 3 files changed, 36 insertions(+), 21 deletions(-)

-- 
2.28.0


             reply	other threads:[~2020-10-09  6:43 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-09  6:40 Jisheng Zhang [this message]
2020-10-09  6:41 ` [PATCH v6 1/2] PCI: dwc: Skip PCIE_MSI_INTR0* programming if MSI is disabled Jisheng Zhang
2020-10-09  6:42 ` [PATCH v6 2/2] PCI: dwc: Fix MSI page leakage in suspend/resume Jisheng Zhang

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