linux-toradex.git/drivers/of/platform.c, branch v5.14-rc6

iommu: Drop unnecessary of_iommu.h includes

2021-06-08T12:15:46+00:00

The only place of_iommu.h is needed is in drivers/of/device.c. Remove it
from everywhere else.

Cc: Will Deacon 
Cc: Robin Murphy 
Cc: Joerg Roedel 
Cc: Rob Clark 
Cc: Marek Szyprowski 
Cc: Krzysztof Kozlowski 
Cc: Bjorn Andersson 
Cc: Yong Wu 
Cc: Matthias Brugger 
Cc: Heiko Stuebner 
Cc: Jean-Philippe Brucker 
Cc: Frank Rowand 
Cc: linux-arm-kernel@lists.infradead.org
Cc: iommu@lists.linux-foundation.org
Signed-off-by: Rob Herring 
Reviewed-by: Robin Murphy 
Acked-by: Heiko Stuebner 
Link: https://lore.kernel.org/r/20210527193710.1281746-2-robh@kernel.org
Signed-off-by: Joerg Roedel

of: Add missing 'Return' section in kerneldoc comments

2021-03-27T18:59:03+00:00

Many of the DT kerneldoc comments are lacking a 'Return' section. Let's
add the section in cases we have a description of return values. There's
still some cases where the return values are not documented.

Cc: Frank Rowand 
Cc: Mauro Carvalho Chehab 
Signed-off-by: Rob Herring 
Reviewed-by: Mauro Carvalho Chehab 
Link: https://lore.kernel.org/r/20210325164713.1296407-8-robh@kernel.org

of: platform: Demote kernel-doc abuse

2021-03-23T21:27:52+00:00

Fixes the following W=1 kernel build warning(s):

 drivers/of/platform.c:298: warning: Function parameter or member 'lookup' not described in 'of_dev_lookup'
 drivers/of/platform.c:298: warning: Function parameter or member 'np' not described in 'of_dev_lookup'

Cc: Rob Herring 
Cc: Frank Rowand 
Cc: Kees Cook 
Cc: Anton Vorontsov 
Cc: Colin Cross 
Cc: Tony Luck 
Cc: benh@kernel.crashing.org
Cc: devicetree@vger.kernel.org
Signed-off-by: Lee Jones 
Signed-off-by: Rob Herring 
Link: https://lore.kernel.org/r/20210318104036.3175910-4-lee.jones@linaro.org

Merge tag 'char-misc-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2021-02-24T18:25:37+00:00

Pull char/misc driver updates from Greg KH:
 "Here is the large set of char/misc/whatever driver subsystem updates
  for 5.12-rc1. Over time it seems like this tree is collecting more and
  more tiny driver subsystems in one place, making it easier for those
  maintainers, which is why this is getting larger.

  Included in here are:

   - coresight driver updates

   - habannalabs driver updates

   - virtual acrn driver addition (proper acks from the x86 maintainers)

   - broadcom misc driver addition

   - speakup driver updates

   - soundwire driver updates

   - fpga driver updates

   - amba driver updates

   - mei driver updates

   - vfio driver updates

   - greybus driver updates

   - nvmeem driver updates

   - phy driver updates

   - mhi driver updates

   - interconnect driver udpates

   - fsl-mc bus driver updates

   - random driver fix

   - some small misc driver updates (rtsx, pvpanic, etc.)

  All of these have been in linux-next for a while, with the only
  reported issue being a merge conflict due to the dfl_device_id
  addition from the fpga subsystem in here"

* tag 'char-misc-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (311 commits)
  spmi: spmi-pmic-arb: Fix hw_irq overflow
  Documentation: coresight: Add PID tracing description
  coresight: etm-perf: Support PID tracing for kernel at EL2
  coresight: etm-perf: Clarify comment on perf options
  ACRN: update MAINTAINERS: mailing list is subscribers-only
  regmap: sdw-mbq: use MODULE_LICENSE("GPL")
  regmap: sdw: use no_pm routines for SoundWire 1.2 MBQ
  regmap: sdw: use _no_pm functions in regmap_read/write
  soundwire: intel: fix possible crash when no device is detected
  MAINTAINERS: replace my with email with replacements
  mhi: Fix double dma free
  uapi: map_to_7segment: Update example in documentation
  uio: uio_pci_generic: don't fail probe if pdev->irq equals to IRQ_NOTCONNECTED
  drivers/misc/vmw_vmci: restrict too big queue size in qp_host_alloc_queue
  firewire: replace tricky statement by two simple ones
  vme: make remove callback return void
  firmware: google: make coreboot driver's remove callback return void
  firmware: xilinx: Use explicit values for all enum values
  sample/acrn: Introduce a sample of HSM ioctl interface usage
  virt: acrn: Introduce an interface for Service VM to control vCPU
  ...

of: Remove of_dev_{get,put}()

2021-02-13T01:23:39+00:00

of_dev_get() and of_dev_put are just wrappers for get_device()/put_device()
on a platform_device. There's also already platform_device_{get,put}()
wrappers for this purpose. Let's update the few users and remove
of_dev_{get,put}().

Cc: Michael Ellerman 
Cc: Benjamin Herrenschmidt 
Cc: Paul Mackerras 
Cc: "David S. Miller" 
Cc: Jakub Kicinski 
Cc: Frank Rowand 
Cc: Patrice Chotard 
Cc: Felipe Balbi 
Cc: Julia Lawall 
Cc: Gilles Muller 
Cc: Nicolas Palix 
Cc: Michal Marek 
Cc: linuxppc-dev@lists.ozlabs.org
Cc: netdev@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-usb@vger.kernel.org
Cc: cocci@systeme.lip6.fr
Signed-off-by: Rob Herring 
Reviewed-by: Greg Kroah-Hartman 
Link: https://lore.kernel.org/r/20210211232745.1498137-2-robh@kernel.org

nvmem: Add driver to expose reserved memory as nvmem

2021-02-04T16:04:18+00:00

Firmware/co-processors might use reserved memory areas in order to pass
data stemming from an nvmem device otherwise non accessible to Linux.
For example an EEPROM memory only physically accessible to firmware, or
data only accessible early at boot time.

In order to expose this data to other drivers and user-space, the driver
models the reserved memory area as an nvmem device.

Tested-by: Tim Gover 
Reviewed-by: Rob Herring 
Signed-off-by: Nicolas Saenz Julienne 
Signed-off-by: Srinivas Kandagatla 
Link: https://lore.kernel.org/r/20210129171430.11328-5-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman

Revert "of: platform: Batch fwnode parsing when adding all top level devices"

2020-12-09T18:10:20+00:00

This reverts commit 93d2e4322aa74c1ad1e8c2160608eb9a960d69ff.

The fw_devlink_pause/resume() optimization attempt is getting replaced
with a much more robust optimization by the end of this series. So, stop
using those APIs.

Acked-by: Rob Herring 
Signed-off-by: Saravana Kannan 
Link: https://lore.kernel.org/r/20201121020232.908850-6-saravanak@google.com
Signed-off-by: Greg Kroah-Hartman

of: platform: Destroy child devices symmetrically

2020-08-18T02:19:35+00:00

Iterate over child devices in reverse when unpopulating a platform
device to make this step symmetrical with the population step. This
fixes an issue in the Tegra DRM driver where upon module unload the
DPAUX controller tries to unregister an I2C controller but will end
up waiting indefinitely because one of the SOR devices is keeping a
reference to it. Since the SOR devices are instantiated after the
DPAUX devices, they would only be removed (and hence release their
reference to the I2C controller) after the DPAUX devices have been
removed.

While destroying the child devices in reverse order helps in this
situation, it isn't fully safe to do so either. An even better way
would be for the child devices to be reordered to match the probe
order, which would work irrespective of the instantiation order.

However, reordering by probe order would be fairly complicated and
doesn't fix any known issues, so we'll go with the simpler fix for
now.

Signed-off-by: Thierry Reding 
Link: https://lore.kernel.org/r/20200806153650.3883530-1-thierry.reding@gmail.com
Signed-off-by: Rob Herring

Merge tag 'driver-core-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

2020-06-07T17:53:36+00:00

Pull driver core updates from Greg KH:
 "Here is the set of driver core patches for 5.8-rc1.

  Not all that huge this release, just a number of small fixes and
  updates:

   - software node fixes

   - kobject now sends KOBJ_REMOVE when it is removed from sysfs, not
     when it is removed from memory (which could come much later)

   - device link additions and fixes based on testing on more devices

   - firmware core cleanups

   - other minor changes, full details in the shortlog

  All have been in linux-next for a while with no reported issues"

* tag 'driver-core-5.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (23 commits)
  driver core: Update device link status correctly for SYNC_STATE_ONLY links
  firmware_loader: change enum fw_opt to u32
  software node: implement software_node_unregister()
  kobject: send KOBJ_REMOVE uevent when the object is removed from sysfs
  driver core: Remove unnecessary is_fwnode_dev variable in device_add()
  drivers property: When no children in primary, try secondary
  driver core: platform: Fix spelling errors in platform.c
  driver core: Remove check in driver_deferred_probe_force_trigger()
  of: platform: Batch fwnode parsing when adding all top level devices
  driver core: fw_devlink: Add support for batching fwnode parsing
  driver core: Look for waiting consumers only for a fwnode's primary device
  driver core: Move code to the right part of the file
  Revert "Revert "driver core: Set fw_devlink to "permissive" behavior by default""
  drivers: base: Fix NULL pointer exception in __platform_driver_probe() if a driver developer is foolish
  firmware_loader: move fw_fallback_config to a private kernel symbol namespace
  driver core: Add missing '\n' in log messages
  driver/base/soc: Use kobj_to_dev() API
  Add documentation on meaning of -EPROBE_DEFER
  driver core: platform: remove redundant assignment to variable ret
  debugfs: Use the correct style for SPDX License Identifier
  ...

dt/platform: Fix comment in of_dev_lookup()

2020-05-28T01:30:26+00:00

The code is using of_dev_lookup() rather than of_devname_lookup().

Signed-off-by: Qi Zheng 
Signed-off-by: Rob Herring