linux-toradex.git/drivers/i2c, branch v5.1-rc1 Linux kernel for Apalis and Colibri modules i2c: i2c-designware-platdrv: Always use a dynamic adapter number 2019-03-13T17:07:10+00:00 Hans de Goede hdegoede@redhat.com 2019-03-12T14:55:54+00:00 cd86d1403bb4c80e443d736b2a692cbf68a9f471 Before this commit the i2c-designware-platdrv assumes that if the pdev has an apci-companion it should use a dynamic adapter-nr and it sets adapter->nr to -1, otherwise it will use pdev->id as adapter->nr. There are 3 ways how platform_device-s to which i2c-designware-platdrv will bind can be instantiated: 1) Through of / devicetree 2) Through ACPI enumeration 3) Explicitly instantiated through platform_device_create + add 1) In case of devicetree-instantiation the drivers/of code always sets pdev->id to PLATFORM_DEVID_NONE, which is -1 so in this case both paths to set adapter->nr end up doing the same thing. 2) In case of ACPI instantiation the device will always have an ACPI-companion, so we are already using dynamic adapter-nrs. 3) There are 2 places manually instantiating a designware_i2c platform_dev: drivers/mfd/intel_quark_i2c_gpio.c drivers/mfd/intel-lpss.c In the intel_quark_i2c_gpio.c case pdev->id is always 0, so switching to dynamic adapter-nrs here could lead to the bus-number no longer being stable, but the quark X1000 only has 1 i2c-controller, which will also be assigned bus-number 0 when using dynamic adapter-nrs. In the intel-lpss.c case intel_lpss_probe() is called from either intel-lpss-acpi.c in which case there always is an ACPI-companion, or from intel-lpss-pci.c. In most cases devices handled by intel-lpss-pci.c also have an ACPI-companion, so we use a dynamic adapter-nr. But in some cases the ACPI-companion is missing and we would use pdev->id (allocated from intel_lpss_devid_ida). Devices which use the intel-lpss-pci.c code typically have many i2c busses, so using pdev->id in this case may lead to a bus-number conflict, triggering a WARN(id < 0, "couldn't get idr") in i2c-core-base.c causing an oops an the adapter registration to fail. So in this case using non dynamic adapter-nrs is actually undesirable. One machine on which this oops was triggering is the Apollo Lake based Acer TravelMate Spin B118. TL;DR: Switching to always using dynamic adapter-numbers does not make any difference in most cases and in the one case where it does make a difference the behavior change is desirable because the old behavior caused an oops. BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1687065 Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> 
Before this commit the i2c-designware-platdrv assumes that if the pdev
has an apci-companion it should use a dynamic adapter-nr and it sets
adapter->nr to -1, otherwise it will use pdev->id as adapter->nr.

There are 3 ways how platform_device-s to which i2c-designware-platdrv
will bind can be instantiated:

1) Through of / devicetree
2) Through ACPI enumeration
3) Explicitly instantiated through platform_device_create + add

1) In case of devicetree-instantiation the drivers/of code always sets
pdev->id to PLATFORM_DEVID_NONE, which is -1 so in this case both paths
to set adapter->nr end up doing the same thing.

2) In case of ACPI instantiation the device will always have an
ACPI-companion, so we are already using dynamic adapter-nrs.

3) There are 2 places manually instantiating a designware_i2c platform_dev:
drivers/mfd/intel_quark_i2c_gpio.c
drivers/mfd/intel-lpss.c

In the intel_quark_i2c_gpio.c case pdev->id is always 0, so switching to
dynamic adapter-nrs here could lead to the bus-number no longer being
stable, but the quark X1000 only has 1 i2c-controller, which will also
be assigned bus-number 0 when using dynamic adapter-nrs.

In the intel-lpss.c case intel_lpss_probe() is called from either
intel-lpss-acpi.c in which case there always is an ACPI-companion, or
from intel-lpss-pci.c. In most cases devices handled by intel-lpss-pci.c
also have an ACPI-companion, so we use a dynamic adapter-nr. But in some
cases the ACPI-companion is missing and we would use pdev->id (allocated
from intel_lpss_devid_ida). Devices which use the intel-lpss-pci.c code
typically have many i2c busses, so using pdev->id in this case may lead
to a bus-number conflict, triggering a WARN(id < 0, "couldn't get idr")
in i2c-core-base.c causing an oops an the adapter registration to fail.
So in this case using non dynamic adapter-nrs is actually undesirable.

One machine on which this oops was triggering is the Apollo Lake based
Acer TravelMate Spin B118.

TL;DR: Switching to always using dynamic adapter-numbers does not make
any difference in most cases and in the one case where it does make a
difference the behavior change is desirable because the old behavior
caused an oops.

BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1687065
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
i2c: i2c-designware-platdrv: Cleanup setting of the adapter number 2019-03-13T17:06:56+00:00 Hans de Goede hdegoede@redhat.com 2019-03-12T14:55:53+00:00 77f3381a83c2f66daeb6719a1191a87280d57f62 i2c-designware-platdrv assumes that if the pdev has an apci-companion it should use a dynamic adapter-nr and otherwise it will use pdev->id as adapter-nr. Before this commit the setting of the adapter.nr was somewhat convoluted, in the acpi_companion case it was set from dw_i2c_acpi_configure, in the non acpi_companion case it was set from dw_i2c_set_fifo_size based on tx_fifo_depth not being set yet indicating that dw_i2c_acpi_configure was not executed. This cleans this up, directly setting the adapter-nr from dw_i2c_plat_probe for both cases. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> 
i2c-designware-platdrv assumes that if the pdev has an apci-companion
it should use a dynamic adapter-nr and otherwise it will use pdev->id
as adapter-nr.

Before this commit the setting of the adapter.nr was somewhat convoluted,
in the acpi_companion case it was set from dw_i2c_acpi_configure, in the
non acpi_companion case it was set from dw_i2c_set_fifo_size based on
tx_fifo_depth not being set yet indicating that dw_i2c_acpi_configure was
not executed.

This cleans this up, directly setting the adapter-nr from
dw_i2c_plat_probe for both cases.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
i2c: add extra check to safe DMA buffer helper 2019-03-13T17:03:26+00:00 Wolfram Sang wsa+renesas@sang-engineering.com 2019-03-12T12:44:42+00:00 bf263c35b2ebe7f1674205f6b36487250299b5a7 Make sure we report 'no buffer' for 0-length messages. This can only happen if threshold is set to 0 which is kind of bogus but we should still handle this situation. Update the docs and add a debug message to educate callers of this function. Reported-by: Hsin-Yi Wang <hsinyi@chromium.org> Fixes: e94bc5d18be0 ("i2c: add helpers to ease DMA handling") Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Hsin-Yi Wang <hsinyi@chromium.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> 
Make sure we report 'no buffer' for 0-length messages. This can only
happen if threshold is set to 0 which is kind of bogus but we should
still handle this situation. Update the docs and add a debug message
to educate callers of this function.

Reported-by: Hsin-Yi Wang <hsinyi@chromium.org>
Fixes: e94bc5d18be0 ("i2c: add helpers to ease DMA handling")
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Hsin-Yi Wang <hsinyi@chromium.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
i2c: i2c-stm32f7: Fix SDADEL minimum formula 2019-03-12T13:09:33+00:00 Nicolas Le Bayon nicolas.le.bayon@st.com 2019-03-06T15:12:16+00:00 c86da50cfd840edf223a242580913692acddbcf6 It conforms with Reference Manual I2C timing section. Fixes: aeb068c57214 ("i2c: i2c-stm32f7: add driver") Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com> Signed-off-by: Bich Hemon <bich.hemon@st.com> Reviewed-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> 
It conforms with Reference Manual I2C timing section.

Fixes: aeb068c57214 ("i2c: i2c-stm32f7: add driver")
Signed-off-by: Nicolas Le Bayon <nicolas.le.bayon@st.com>
Signed-off-by: Bich Hemon <bich.hemon@st.com>
Reviewed-by: Pierre-Yves MORDRET <pierre-yves.mordret@st.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
i2c: rcar: explain the lockless design 2019-03-12T13:09:33+00:00 Wolfram Sang wsa+renesas@sang-engineering.com 2019-03-03T15:03:14+00:00 7ce98a5591d292c7630e2c6804ba0818a75a0f86 To make sure people can understand the lockless design of this driver without the need to dive into git history, add a comment giving an overview of the situation. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> 
To make sure people can understand the lockless design of this driver
without the need to dive into git history, add a comment giving an
overview of the situation.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
i2c: rcar: fix concurrency issue related to ICDMAER 2019-03-12T13:09:16+00:00 Hiromitsu Yamasaki hiromitsu.yamasaki.ym@renesas.com 2019-03-03T15:03:13+00:00 a35ba2f74df5481cb4db1e9d582c708efeb9880d This patch fixes the problem that an interrupt may set up a new I2C message and the DMA callback overwrites this setup. By disabling the DMA Enable Register(ICDMAER), rcar_i2c_dma_unmap() enables interrupts for register settings (such as Master Control Register(ICMCR)) and advances the I2C transfer sequence. If an interrupt occurs immediately after ICDMAER is disabled, the callback handler later continues and overwrites the previous settings from the interrupt. So, disable ICDMAER at the end of the callback to ensure other interrupts are masked until then. Note that this driver needs to work lock-free because there are IP cores with a HW race condition which prevent us from using a spinlock in the interrupt handler. Reproduction test: 1. Add a delay after disabling ICDMAER. (It is expected to generate an interrupt of rcar_i2c_irq()) void rcar_i2c_dma_unmap(struct rcar_i2c_priv *priv) { ... rcar_i2c_write(priv, ICDMAER, 0); usleep_range(500, 800) ... priv->dma_direction = DMA_NONE; } 2. Execute DMA transfers $ i2ctransfer -y 4 w9@0x6a 1 1+ r16 3. A log message of BUG_ON() will be displayed. Fixes: 73e8b0528346 ("i2c: rcar: add DMA support") Signed-off-by: Hiromitsu Yamasaki <hiromitsu.yamasaki.ym@renesas.com> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> [wsa: updated test case to be more reliable, added note to comment] Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> 
This patch fixes the problem that an interrupt may set up a new I2C
message and the DMA callback overwrites this setup.

By disabling the DMA Enable Register(ICDMAER), rcar_i2c_dma_unmap()
enables interrupts for register settings (such as Master Control
Register(ICMCR)) and advances the I2C transfer sequence.

If an interrupt occurs immediately after ICDMAER is disabled, the
callback handler later continues and overwrites the previous settings
from the interrupt. So, disable ICDMAER at the end of the callback to
ensure other interrupts are masked until then.

Note that this driver needs to work lock-free because there are IP cores
with a HW race condition which prevent us from using a spinlock in the
interrupt handler.

Reproduction test:
1. Add a delay after disabling ICDMAER. (It is expected to generate an
   interrupt of rcar_i2c_irq())

    void rcar_i2c_dma_unmap(struct rcar_i2c_priv *priv)
    {
        ...
        rcar_i2c_write(priv, ICDMAER, 0);
        usleep_range(500, 800)
        ...
        priv->dma_direction = DMA_NONE;
    }

2. Execute DMA transfers

 $ i2ctransfer -y 4 w9@0x6a 1 1+ r16

3. A log message of BUG_ON() will be displayed.

Fixes: 73e8b0528346 ("i2c: rcar: add DMA support")
Signed-off-by: Hiromitsu Yamasaki <hiromitsu.yamasaki.ym@renesas.com>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
[wsa: updated test case to be more reliable, added note to comment]
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
i2c: sis630: correct format strings 2019-03-12T13:09:16+00:00 Louis Taylor louis@kragniz.eu 2019-03-02T14:18:36+00:00 60f7691c624b41a05bfc3493d9b0519e7951b7ef When compiling with -Wformat, clang warns: drivers/i2c/busses/i2c-sis630.c:482:4: warning: format specifies type 'unsigned short' but the argument has type 'int' [-Wformat] smbus_base + SMB_STS, ^~~~~~~~~~~~~~~~~~~~ drivers/i2c/busses/i2c-sis630.c:483:4: warning: format specifies type 'unsigned short' but the argument has type 'int' [-Wformat] smbus_base + SMB_STS + SIS630_SMB_IOREGION - 1); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/i2c/busses/i2c-sis630.c:531:37: warning: format specifies type 'unsigned short' but the argument has type 'int' [-Wformat] "SMBus SIS630 adapter at %04hx", smbus_base + SMB_STS); ~~~~~ ^~~~~~~~~~~~~~~~~~~~ This patch fixes the format strings to use the format type for int. Link: https://github.com/ClangBuiltLinux/linux/issues/378 Signed-off-by: Louis Taylor <louis@kragniz.eu> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> 
When compiling with -Wformat, clang warns:

drivers/i2c/busses/i2c-sis630.c:482:4: warning: format specifies type
      'unsigned short' but the argument has type 'int' [-Wformat]
                        smbus_base + SMB_STS,
                        ^~~~~~~~~~~~~~~~~~~~

drivers/i2c/busses/i2c-sis630.c:483:4: warning: format specifies type
      'unsigned short' but the argument has type 'int' [-Wformat]
                        smbus_base + SMB_STS + SIS630_SMB_IOREGION - 1);
                        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

drivers/i2c/busses/i2c-sis630.c:531:37: warning: format specifies type
      'unsigned short' but the argument has type 'int' [-Wformat]
                 "SMBus SIS630 adapter at %04hx", smbus_base + SMB_STS);
                                          ~~~~~   ^~~~~~~~~~~~~~~~~~~~

This patch fixes the format strings to use the format type for int.

Link: https://github.com/ClangBuiltLinux/linux/issues/378
Signed-off-by: Louis Taylor <louis@kragniz.eu>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
i2c: mediatek: modify threshold passed to i2c_get_dma_safe_msg_buf() 2019-03-12T13:09:15+00:00 Hsin-Yi Wang hsinyi@chromium.org 2019-02-15T09:02:02+00:00 bc1a7f75c85e226e82f183d30d75c357f92b6029 DMA with zero-length transfers doesn't make sense and this HW doesn't support them at all, so increase the threshold. Fixes: fc66b39fe36a ("i2c: mediatek: Use DMA safe buffers for i2c transactions") Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org> [wsa: reworded commit message] Signed-off-by: Wolfram Sang <wsa@the-dreams.de> 
DMA with zero-length transfers doesn't make sense and this HW doesn't
support them at all, so increase the threshold.

Fixes: fc66b39fe36a ("i2c: mediatek: Use DMA safe buffers for i2c transactions")
Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
[wsa: reworded commit message]
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Merge tag 'pci-v5.1-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci 2019-03-09T22:57:08+00:00 Linus Torvalds torvalds@linux-foundation.org 2019-03-09T22:57:08+00:00 2901752c14b8e1b7dd898d2e5245c93e531aa624 Pull PCI updates from Bjorn Helgaas: - Use match_string() instead of reimplementing it (Andy Shevchenko) - Enable SERR# forwarding for all bridges (Bharat Kumar Gogada) - Use Latency Tolerance Reporting if already enabled by platform (Bjorn Helgaas) - Save/restore LTR info for suspend/resume (Bjorn Helgaas) - Fix DPC use of uninitialized data (Dongdong Liu) - Probe bridge window attributes only once at enumeration-time to fix device accesses during rescan (Bjorn Helgaas) - Return BAR size (not "size -1 ") from pci_size() to simplify code (Du Changbin) - Use config header type (not class code) identify bridges more reliably (Honghui Zhang) - Work around Intel Denverton incorrect Trace Hub BAR size reporting (Alexander Shishkin) - Reorder pciehp cached state/hardware state updates to avoid missed interrupts (Mika Westerberg) - Turn ibmphp semaphores into completions or mutexes (Arnd Bergmann) - Mark expected switch fall-through (Mathieu Malaterre) - Use of_node_name_eq() for node name comparisons (Rob Herring) - Add ACS and pciehp quirks for HXT SD4800 (Shunyong Yang) - Consolidate Rohm Vendor ID definitions (Andy Shevchenko) - Use u32 (not __u32) for things not exposed to userspace (Logan Gunthorpe) - Fix locking semantics of bus and slot reset interfaces (Alex Williamson) - Update PCIEPORTBUS Kconfig help text (Hou Zhiqiang) - Allow portdrv to claim subtractive decode Ports so PCIe services will work for them (Honghui Zhang) - Report PCIe links that become degraded at run-time (Alexandru Gagniuc) - Blacklist Gigabyte X299 Root Port power management to fix Thunderbolt hotplug (Mika Westerberg) - Revert runtime PM suspend/resume callbacks that broke PME on network cable plug (Mika Westerberg) - Disable Data Link State Changed interrupts to prevent wakeup immediately after suspend (Mika Westerberg) - Extend altera to support Stratix 10 (Ley Foon Tan) - Allow building altera driver on ARM64 (Ley Foon Tan) - Replace Douglas with Tom Joseph as Cadence PCI host/endpoint maintainer (Lorenzo Pieralisi) - Add DT support for R-Car RZ/G2E (R8A774C0) (Fabrizio Castro) - Add dra72x/dra74x/dra76x SoC compatible strings (Kishon Vijay Abraham I) - Enable x2 mode support for dra72x/dra74x/dra76x SoC (Kishon Vijay Abraham I) - Configure dra7xx PHY to PCIe mode (Kishon Vijay Abraham I) - Simplify dwc (remove unnecessary header includes, name variables consistently, reduce inverted logic, etc) (Gustavo Pimentel) - Add i.MX8MQ support (Andrey Smirnov) - Add message to help debug dwc MSI-X mask bit errors (Gustavo Pimentel) - Work around imx7d PCIe PLL erratum (Trent Piepho) - Don't assert qcom reset GPIO during probe (Bjorn Andersson) - Skip dwc MSI init if MSIs have been disabled (Lucas Stach) - Use memcpy_fromio()/memcpy_toio() instead of plain memcpy() in PCI endpoint framework (Wen Yang) - Add interface to discover supported endpoint features to replace a bitfield that wasn't flexible enough (Kishon Vijay Abraham I) - Implement the new supported-feature interface for designware-plat, dra7xx, rockchip, cadence (Kishon Vijay Abraham I) - Fix issues with 64-bit BAR in endpoints (Kishon Vijay Abraham I) - Add layerscape endpoint mode support (Xiaowei Bao) - Remove duplicate struct hv_vp_set in favor of struct hv_vpset (Maya Nakamura) - Rework hv_irq_unmask() to use cpumask_to_vpset() instead of open-coded reimplementation (Maya Nakamura) - Align Hyper-V struct retarget_msi_interrupt arguments (Maya Nakamura) - Fix mediatek MMIO size computation to enable full size of available MMIO space (Honghui Zhang) - Fix mediatek DMA window size computation to allow endpoint DMA access to full DRAM address range (Honghui Zhang) - Fix mvebu prefetchable BAR regression caused by common bridge emulation that assumed all bridges had prefetchable windows (Thomas Petazzoni) - Make advk_pci_bridge_emul_ops static (Wei Yongjun) - Configure MPS settings for VMD root ports (Jon Derrick) * tag 'pci-v5.1-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (92 commits) PCI: Update PCIEPORTBUS Kconfig help text PCI: Fix "try" semantics of bus and slot reset PCI/LINK: Report degraded links via link bandwidth notification dt-bindings: PCI: altera: Add altr,pcie-root-port-2.0 PCI: altera: Enable driver on ARM64 PCI: altera: Add Stratix 10 PCIe support PCI/PME: Fix possible use-after-free on remove PCI: aardvark: Make symbol 'advk_pci_bridge_emul_ops' static PCI: dwc: skip MSI init if MSIs have been explicitly disabled PCI: hv: Refactor hv_irq_unmask() to use cpumask_to_vpset() PCI: hv: Replace hv_vp_set with hv_vpset PCI: hv: Add __aligned(8) to struct retarget_msi_interrupt PCI: mediatek: Enlarge PCIe2AHB window size to support 4GB DRAM PCI: mediatek: Fix memory mapped IO range size computation PCI: dwc: Remove superfluous shifting in definitions PCI: dwc: Make use of GENMASK/FIELD_PREP PCI: dwc: Make use of BIT() in constant definitions PCI: dwc: Share code for dw_pcie_rd/wr_other_conf() PCI: dwc: Make use of IS_ALIGNED() PCI: imx6: Add code to request/control "pcie_aux" clock for i.MX8MQ ... 
Pull PCI updates from Bjorn Helgaas:

 - Use match_string() instead of reimplementing it (Andy Shevchenko)

 - Enable SERR# forwarding for all bridges (Bharat Kumar Gogada)

 - Use Latency Tolerance Reporting if already enabled by platform (Bjorn
   Helgaas)

 - Save/restore LTR info for suspend/resume (Bjorn Helgaas)

 - Fix DPC use of uninitialized data (Dongdong Liu)

 - Probe bridge window attributes only once at enumeration-time to fix
   device accesses during rescan (Bjorn Helgaas)

 - Return BAR size (not "size -1 ") from pci_size() to simplify code (Du
   Changbin)

 - Use config header type (not class code) identify bridges more
   reliably (Honghui Zhang)

 - Work around Intel Denverton incorrect Trace Hub BAR size reporting
   (Alexander Shishkin)

 - Reorder pciehp cached state/hardware state updates to avoid missed
   interrupts (Mika Westerberg)

 - Turn ibmphp semaphores into completions or mutexes (Arnd Bergmann)

 - Mark expected switch fall-through (Mathieu Malaterre)

 - Use of_node_name_eq() for node name comparisons (Rob Herring)

 - Add ACS and pciehp quirks for HXT SD4800 (Shunyong Yang)

 - Consolidate Rohm Vendor ID definitions (Andy Shevchenko)

 - Use u32 (not __u32) for things not exposed to userspace (Logan
   Gunthorpe)

 - Fix locking semantics of bus and slot reset interfaces (Alex
   Williamson)

 - Update PCIEPORTBUS Kconfig help text (Hou Zhiqiang)

 - Allow portdrv to claim subtractive decode Ports so PCIe services will
   work for them (Honghui Zhang)

 - Report PCIe links that become degraded at run-time (Alexandru
   Gagniuc)

 - Blacklist Gigabyte X299 Root Port power management to fix Thunderbolt
   hotplug (Mika Westerberg)

 - Revert runtime PM suspend/resume callbacks that broke PME on network
   cable plug (Mika Westerberg)

 - Disable Data Link State Changed interrupts to prevent wakeup
   immediately after suspend (Mika Westerberg)

 - Extend altera to support Stratix 10 (Ley Foon Tan)

 - Allow building altera driver on ARM64 (Ley Foon Tan)

 - Replace Douglas with Tom Joseph as Cadence PCI host/endpoint
   maintainer (Lorenzo Pieralisi)

 - Add DT support for R-Car RZ/G2E (R8A774C0) (Fabrizio Castro)

 - Add dra72x/dra74x/dra76x SoC compatible strings (Kishon Vijay Abraham I)

 - Enable x2 mode support for dra72x/dra74x/dra76x SoC (Kishon Vijay
   Abraham I)

 - Configure dra7xx PHY to PCIe mode (Kishon Vijay Abraham I)

 - Simplify dwc (remove unnecessary header includes, name variables
   consistently, reduce inverted logic, etc) (Gustavo Pimentel)

 - Add i.MX8MQ support (Andrey Smirnov)

 - Add message to help debug dwc MSI-X mask bit errors (Gustavo
   Pimentel)

 - Work around imx7d PCIe PLL erratum (Trent Piepho)

 - Don't assert qcom reset GPIO during probe (Bjorn Andersson)

 - Skip dwc MSI init if MSIs have been disabled (Lucas Stach)

 - Use memcpy_fromio()/memcpy_toio() instead of plain memcpy() in PCI
   endpoint framework (Wen Yang)

 - Add interface to discover supported endpoint features to replace a
   bitfield that wasn't flexible enough (Kishon Vijay Abraham I)

 - Implement the new supported-feature interface for designware-plat,
   dra7xx, rockchip, cadence (Kishon Vijay Abraham I)

 - Fix issues with 64-bit BAR in endpoints (Kishon Vijay Abraham I)

 - Add layerscape endpoint mode support (Xiaowei Bao)

 - Remove duplicate struct hv_vp_set in favor of struct hv_vpset (Maya
   Nakamura)

 - Rework hv_irq_unmask() to use cpumask_to_vpset() instead of
   open-coded reimplementation (Maya Nakamura)

 - Align Hyper-V struct retarget_msi_interrupt arguments (Maya Nakamura)

 - Fix mediatek MMIO size computation to enable full size of available
   MMIO space (Honghui Zhang)

 - Fix mediatek DMA window size computation to allow endpoint DMA access
   to full DRAM address range (Honghui Zhang)

 - Fix mvebu prefetchable BAR regression caused by common bridge
   emulation that assumed all bridges had prefetchable windows (Thomas
   Petazzoni)

 - Make advk_pci_bridge_emul_ops static (Wei Yongjun)

 - Configure MPS settings for VMD root ports (Jon Derrick)

* tag 'pci-v5.1-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (92 commits)
  PCI: Update PCIEPORTBUS Kconfig help text
  PCI: Fix "try" semantics of bus and slot reset
  PCI/LINK: Report degraded links via link bandwidth notification
  dt-bindings: PCI: altera: Add altr,pcie-root-port-2.0
  PCI: altera: Enable driver on ARM64
  PCI: altera: Add Stratix 10 PCIe support
  PCI/PME: Fix possible use-after-free on remove
  PCI: aardvark: Make symbol 'advk_pci_bridge_emul_ops' static
  PCI: dwc: skip MSI init if MSIs have been explicitly disabled
  PCI: hv: Refactor hv_irq_unmask() to use cpumask_to_vpset()
  PCI: hv: Replace hv_vp_set with hv_vpset
  PCI: hv: Add __aligned(8) to struct retarget_msi_interrupt
  PCI: mediatek: Enlarge PCIe2AHB window size to support 4GB DRAM
  PCI: mediatek: Fix memory mapped IO range size computation
  PCI: dwc: Remove superfluous shifting in definitions
  PCI: dwc: Make use of GENMASK/FIELD_PREP
  PCI: dwc: Make use of BIT() in constant definitions
  PCI: dwc: Share code for dw_pcie_rd/wr_other_conf()
  PCI: dwc: Make use of IS_ALIGNED()
  PCI: imx6: Add code to request/control "pcie_aux" clock for i.MX8MQ
  ...
Merge branch 'i2c/for-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2019-03-08T17:27:33+00:00 Linus Torvalds torvalds@linux-foundation.org 2019-03-08T17:27:33+00:00 6c3f98faddc7f07981c5365ba2f45905ad75fcaa Pull i2c updates from Wolfram Sang: - the I2C core gained helpers to assist drivers in handling their suspended state, and drivers were converted to use it - two new fault-injectors for stress-testing - bigger refactoring and feature improvements for the ocores, sh_mobile, and tegra drivers - platform_data removal for the at24 EEPROM driver - ... and various improvements and bugfixes all over the subsystem * 'i2c/for-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (69 commits) i2c: Allow recovery of the initial IRQ by an I2C client device. i2c: ocores: turn incomplete kdoc into a comment i2c: designware: Do not allow i2c_dw_xfer() calls while suspended i2c: tegra: Only display error messages if DMA setup fails i2c: gpio: fault-injector: add 'inject_panic' injector i2c: gpio: fault-injector: add 'lose_arbitration' injector i2c: tegra: remove multi-master support i2c: tegra: remove master fifo support on tegra186 i2c: tegra: change phrasing, "fallbacking" to "falling back" i2c: expand minor range when registering chrdev region i2c: aspeed: Add multi-master use case support i2c: core-smbus: don't trace smbus_reply data on errors i2c: ocores: Add support for bus clock via platform data i2c: ocores: Add support for IO mapper registers. i2c: ocores: checkpatch fixes i2c: ocores: add SPDX tag i2c: ocores: add polling interface i2c: ocores: do not handle IRQ if IF is not set i2c: ocores: stop transfer on timeout i2c: tegra: add i2c interface timing support ... 
Pull i2c updates from Wolfram Sang:

 - the I2C core gained helpers to assist drivers in handling their
   suspended state, and drivers were converted to use it

 - two new fault-injectors for stress-testing

 - bigger refactoring and feature improvements for the ocores,
   sh_mobile, and tegra drivers

 - platform_data removal for the at24 EEPROM driver

 - ... and various improvements and bugfixes all over the subsystem

* 'i2c/for-5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (69 commits)
  i2c: Allow recovery of the initial IRQ by an I2C client device.
  i2c: ocores: turn incomplete kdoc into a comment
  i2c: designware: Do not allow i2c_dw_xfer() calls while suspended
  i2c: tegra: Only display error messages if DMA setup fails
  i2c: gpio: fault-injector: add 'inject_panic' injector
  i2c: gpio: fault-injector: add 'lose_arbitration' injector
  i2c: tegra: remove multi-master support
  i2c: tegra: remove master fifo support on tegra186
  i2c: tegra: change phrasing, "fallbacking" to "falling back"
  i2c: expand minor range when registering chrdev region
  i2c: aspeed: Add multi-master use case support
  i2c: core-smbus: don't trace smbus_reply data on errors
  i2c: ocores: Add support for bus clock via platform data
  i2c: ocores: Add support for IO mapper registers.
  i2c: ocores: checkpatch fixes
  i2c: ocores: add SPDX tag
  i2c: ocores: add polling interface
  i2c: ocores: do not handle IRQ if IF is not set
  i2c: ocores: stop transfer on timeout
  i2c: tegra: add i2c interface timing support
  ...