[ Upstream commit 726d75a6d243bf6730da3216f3592503f6f0f588 ]

Errata i870 is applicable in both EP and RC mode. Therefore rename
function dra7xx_pcie_ep_unaligned_memaccess(), that implements errata
workaround, to dra7xx_pcie_unaligned_memaccess() and call it for both RC
and EP. Make sure driver probe does not fail in case the workaround is not
applied for RC mode in order to maintain DT backward compatibility.

Reported-by: Chris Welch <Chris.Welch@viavisolutions.com>
Signed-off-by: Vignesh R <vigneshr@ti.com>
[lorenzo.pieralisi@arm.com: reworded the log]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

[ Upstream commit aa77e55d48124d0d78456eabf872fffb5decdbe1 ]

Test the correct value to see whether the PHY get failed.

Use devm_phy_get() instead of devm_phy_optional_get(), since it is
only called if phy name is given in devicetree and so should exist.
If failure when getting or linking PHY, put any PHYs which were
already got and unlink them.

Fixes: dfb80534692ddc5b ("PCI: cadence: Add generic PHY support to host and EP drivers")
Reported-by: Colin King <colin.king@canonical.com>
Signed-off-by: Alan Douglas <adouglas@cadence.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

[ Upstream commit 0652d4b6b56f73c81abbdbc7e26f772cb2dfe370 ]

The IRQ physical address is allocated from region 0, rather than
the highest region. Update the driver to reserve this region in
the bitmap and to use region 0 for all types of interrupt.

This corrects a problem which prevents the interrupt being
signalled correctly if using the first address in the AXI region,
since an offset of zero will always be mapped to region 0.

Fixes: 37dddf14f1ae ("PCI: cadence: Add EndPoint Controller driver for Cadence PCIe controller")
Signed-off-by: Alan Douglas <adouglas@cadence.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

[ Upstream commit 074d6f32689ce05a084b6fa3db38445745bf11cc ]

The Mediatek's host controller has two slots, each with its own control
registers. The host driver needs to identify what slot is connected to
what port in order to access the device's configuration space.

Current code retrieving slot connected to a given endpoint device.

Assuming each slot is connected to one endpoint device as below:

                host bridge
  bus 0 --> __________|_______
           |                  |
           |                  |
         slot 0             slot 1
  bus 1 -->|        bus 2 --> |
           |                  |
         EP 0               EP 1

During PCI enumeration, system software will scan all the PCI devices on
every bus starting from devfn 0. Using PCI_SLOT(devfn) for matching an
endpoint to its slot is erroneous in that the devfn does not contain the
hierarchical bus numbering in it. In order to match an endpoint with its
slot (and related port), the PCI tree must be walked up to the root bus
(where the root ports are situated) and then the PCI_SLOT(devfn)
matching logic can be correctly applied for matching.

This patch fixes the mtk_pcie_find_port() slot matching logic by adding
appropriate PCI tree walking code to retrieve the slot/port a given
endpoint is connected to.

Signed-off-by: Honghui Zhang <honghui.zhang@mediatek.com>
[lorenzo.pieralisi@arm.com: rewrote the commit log]
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Kees writes:
  "Fix open-coded multiplication arguments to allocators

   - Fixes several new open-coded multiplications added in the 4.19
     merge window."

* tag 'alloc-args-v4.19-rc8' of https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  treewide: Replace more open-coded allocation size multiplications

As done treewide earlier, this catches several more open-coded
allocation size calculations that were added to the kernel during the
merge window. This performs the following mechanical transformations
using Coccinelle:

	kvmalloc(a * b, ...) -> kvmalloc_array(a, b, ...)
	kvzalloc(a * b, ...) -> kvcalloc(a, b, ...)
	devm_kzalloc(..., a * b, ...) -> devm_kcalloc(..., a, b, ...)

Signed-off-by: Kees Cook <keescook@chromium.org>

Bjorn writes:
  "PCI fixes for v4.19:

   - Reprogram bridge prefetch registers to fix NVIDIA and Radeon issues
     after suspend/resume (Daniel Drake)

   - Fix mvebu I/O mapping creation sequence (Thomas Petazzoni)

   - Fix minor MAINTAINERS file match issue (Bjorn Helgaas)"

* tag 'pci-v4.19-fixes-3' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI: mvebu: Fix PCI I/O mapping creation sequence
  MAINTAINERS: Remove obsolete drivers/pci pattern from ACPI section
  PCI: Reprogram bridge prefetch registers on resume

Commit ee1604381a371 ("PCI: mvebu: Only remap I/O space if configured") had
the side effect that the PCI I/O mapping was created much earlier than
before, at a point where the probe() of the driver could still fail. This
is for example a problem if one gets an -EPROBE_DEFER at some point during
probe(), after pci_ioremap_io() has been called.

Indeed, there is currently no function to undo what pci_ioremap_io() did,
and switching to pci_remap_iospace() is not an option in pci-mvebu due to
the need for special memory attributes on Armada 38x.

Reverting ee1604381a371 ("PCI: mvebu: Only remap I/O space if configured")
would be a possibility, but it would require also reverting 42342073e38b5
("PCI: mvebu: Convert to use pci_host_bridge directly"). So instead, we use
an open-coded version of pci_host_probe() that creates the PCI I/O mapping
at a point where we are guaranteed not to fail anymore.

Fixes: ee1604381a371 ("PCI: mvebu: Only remap I/O space if configured")
Reported-by: Jan Kundrát <jan.kundrat@cesnet.cz>
Tested-by: Jan Kundrát <jan.kundrat@cesnet.cz>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>

Bjorn writes:
  "PCI fixes:

  - Fix ACPI hotplug issue that causes black screen crash at boot (Mika
    Westerberg)

  - Fix DesignWare "scheduling while atomic" issues (Jisheng Zhang)

  - Add PPC contacts to MAINTAINERS for PCI core error handling (Bjorn
    Helgaas)

  - Sort Mobiveil MAINTAINERS entry (Lorenzo Pieralisi)"

* tag 'pci-v4.19-fixes-2' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  ACPI / hotplug / PCI: Don't scan for non-hotplug bridges if slot is not bridge
  PCI: dwc: Fix scheduling while atomic issues
  MAINTAINERS: Move mobiveil PCI driver entry where it belongs
  MAINTAINERS: Update PPC contacts for PCI core error handling

In case of error, the function pci_create_slot() returns ERR_PTR() and
never returns NULL. The NULL test in the return value check should be
replaced with IS_ERR().

Fixes: a15f2c08c708 ("PCI: hv: support reporting serial number as slot information")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>