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  1. 11 8月, 2020 4 次提交
  3. 05 8月, 2020 1 次提交
  5. 03 8月, 2020 1 次提交
    • L
      spi: Prevent adding devices below an unregistering controller · ddf75be4
      由 Lukas Wunner 提交于 
      CONFIG_OF_DYNAMIC and CONFIG_ACPI allow adding SPI devices at runtime
using a DeviceTree overlay or DSDT patch.  CONFIG_SPI_SLAVE allows the
same via sysfs.

But there are no precautions to prevent adding a device below a
controller that's being removed.  Such a device is unusable and may not
even be able to unbind cleanly as it becomes inaccessible once the
controller has been torn down.  E.g. it is then impossible to quiesce
the device's interrupt.

of_spi_notify() and acpi_spi_notify() do hold a ref on the controller,
but otherwise run lockless against spi_unregister_controller().

Fix by holding the spi_add_lock in spi_unregister_controller() and
bailing out of spi_add_device() if the controller has been unregistered
concurrently.

Fixes: ce79d54a ("spi/of: Add OF notifier handler")
Signed-off-by: NLukas Wunner <lukas@wunner.de>
Cc: stable@vger.kernel.org # v3.19+
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Octavian Purdila <octavian.purdila@intel.com>
Cc: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
Link: https://lore.kernel.org/r/a8c3205088a969dc8410eec1eba9aface60f36af.1596451035.git.lukas@wunner.deSigned-off-by: NMark Brown <broonie@kernel.org>
      ddf75be4
  7. 29 7月, 2020 10 次提交
  9. 27 7月, 2020 3 次提交
  11. 22 7月, 2020 14 次提交
  13. 17 7月, 2020 7 次提交
    • M
      Merge series "Add support for... · 2b2d441d
      由 Mark Brown 提交于 
      Merge series "Add support for [H]SCIF/TMU/CMT/THS/SDHI/MSIOF/CAN[FD]/I2C/IIC/RWDT on R8A774E1" from Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>:

Hi All,

This patch series enables support for following on RZ/G2H SoC,
* CPU OPP
* THS
* CMT/TMU
* I2C/IIC
* MSIOF
* RWDT
* SDHI
* SCIF/HSCIF
* CAN/CANFD

Cheers,
Prabhakar

Lad Prabhakar (14):
  dt-bindings: thermal: rcar-gen3-thermal: Add r8a774e1 support
  dt-bindings: timer: renesas,cmt: Document r8a774e1 CMT support
  arm64: dts: renesas: r8a774e1: Add SCIF and HSCIF nodes
  arm64: dts: renesas: r8a774e1: Add SDHI nodes
  dt-bindings: i2c: renesas,i2c: Document r8a774e1 support
  dt-bindings: i2c: renesas,iic: Document r8a774e1 support
  arm64: dts: renesas: r8a774e1: Add I2C and IIC-DVFS support
  dt-bindings: spi: renesas,sh-msiof: Add r8a774e1 support
  arm64: dts: renesas: r8a774e1: Add MSIOF nodes
  dt-bindings: watchdog: renesas,wdt: Document r8a774e1 support
  arm64: dts: renesas: r8a774e1: Add RWDT node
  dt-bindings: can: rcar_can: Document r8a774e1 support
  dt-bindings: can: rcar_canfd: Document r8a774e1 support
  arm64: dts: renesas: r8a774e1: Add CAN[FD] support

Marian-Cristian Rotariu (6):
  arm64: dts: renesas: r8a774e1: Add operating points
  thermal: rcar_gen3_thermal: Add r8a774e1 support
  arm64: dts: renesas: r8a774e1: Add RZ/G2H thermal support
  arm64: dts: renesas: r8a774e1: Add CMT device nodes
  dt-bindings: timer: renesas,tmu: Document r8a774e1 bindings
  arm64: dts: renesas: r8a774e1: Add TMU device nodes

 .../devicetree/bindings/i2c/renesas,i2c.txt   |   1 +
 .../devicetree/bindings/i2c/renesas,iic.txt   |   1 +
 .../devicetree/bindings/net/can/rcar_can.txt  |   1 +
 .../bindings/net/can/rcar_canfd.txt           |   1 +
 .../bindings/spi/renesas,sh-msiof.yaml        |   1 +
 .../bindings/thermal/rcar-gen3-thermal.yaml   |   1 +
 .../bindings/timer/renesas,cmt.yaml           |   2 +
 .../devicetree/bindings/timer/renesas,tmu.txt |   1 +
 .../bindings/watchdog/renesas,wdt.yaml        |   1 +
 arch/arm64/boot/dts/renesas/r8a774e1.dtsi     | 713 +++++++++++++++++-
 drivers/thermal/rcar_gen3_thermal.c           |   4 +
 11 files changed, 715 insertions(+), 12 deletions(-)

--
2.17.1
      2b2d441d
    • L
      spi: spi-amd: Do not define 'struct acpi_device_id' when !CONFIG_ACPI · 85ed0f63
      由 Lee Jones 提交于 
      Since ACPI_PTR() is used to NULLify the value when !CONFIG_ACPI,
struct 'spi_acpi_match' becomes defined but unused.

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

 drivers/spi/spi-amd.c:297:36: warning: ‘spi_acpi_match’ defined but not used [-Wunused-const-variable=]
 297 | static const struct acpi_device_id spi_acpi_match[] = {
 | ^~~~~~~~~~~~~~
Signed-off-by: NLee Jones <lee.jones@linaro.org>
Cc: Sanjay R Mehta <sanju.mehta@amd.com>
Link: https://lore.kernel.org/r/20200717135424.2442271-15-lee.jones@linaro.orgSigned-off-by: NMark Brown <broonie@kernel.org>
      85ed0f63
    • L
      spi: spi-pxa2xx: Do not define 'struct acpi_device_id' when !CONFIG_ACPI · 9b2d6119
      由 Lee Jones 提交于 
      Since ACPI_PTR() is used to NULLify the value when !CONFIG_ACPI,
struct 'pxa2xx_spi_acpi_match' becomes defined but unused.

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

 drivers/spi/spi-pxa2xx.c:1435:36: warning: ‘pxa2xx_spi_acpi_match’ defined but not used [-Wunused-const-variable=]
 1435 | static const struct acpi_device_id pxa2xx_spi_acpi_match[] = {
 | ^~~~~~~~~~~~~~~~~~~~~
Signed-off-by: NLee Jones <lee.jones@linaro.org>
Cc: Daniel Mack <daniel@zonque.org>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
Link: https://lore.kernel.org/r/20200717135424.2442271-14-lee.jones@linaro.orgSigned-off-by: NMark Brown <broonie@kernel.org>
      9b2d6119
    • L
      spi: spi-at91-usart: Remove unused OF table 'struct of_device_id' · c894c265
      由 Lee Jones 提交于 
      The only way this driver can be probed by MFD via its parent device.

No other reference to 'microchip,at91sam9g45-usart-spi' exists in the kernel.

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

 drivers/spi/spi-at91-usart.c:684:34: warning: ‘at91_usart_spi_dt_ids’ defined but not used [-Wunused-const-variable=]
 684 | static const struct of_device_id at91_usart_spi_dt_ids[] = {
 | ^~~~~~~~~~~~~~~~~~~~~
Suggested-by: NAlexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: NLee Jones <lee.jones@linaro.org>
Acked-by: NAlexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Radu Pirea <radu_nicolae.pirea@upb.ro>
Cc: Nicolas Ferre <nicolas.ferre@microchip.com>
Cc: Ludovic Desroches <ludovic.desroches@microchip.com>
Link: https://lore.kernel.org/r/20200717135424.2442271-13-lee.jones@linaro.orgSigned-off-by: NMark Brown <broonie@kernel.org>
      c894c265
    • L
      spi: spi-topcliff-pch: Add missing descriptions to 'struct pch_spi_data' · decf5326
      由 Lee Jones 提交于 
      Fixes the following W=1 kernel build warning(s):

 drivers/spi/spi-topcliff-pch.c:184: warning: Function parameter or member 'io_base_addr' not described in 'pch_spi_data'
 drivers/spi/spi-topcliff-pch.c:184: warning: Function parameter or member 'pkt_tx_buff' not described in 'pch_spi_data'
 drivers/spi/spi-topcliff-pch.c:184: warning: Function parameter or member 'pkt_rx_buff' not described in 'pch_spi_data'
 drivers/spi/spi-topcliff-pch.c:184: warning: Function parameter or member 'dma' not described in 'pch_spi_data'
 drivers/spi/spi-topcliff-pch.c:184: warning: Function parameter or member 'use_dma' not described in 'pch_spi_data'
 drivers/spi/spi-topcliff-pch.c:184: warning: Function parameter or member 'save_total_len' not described in 'pch_spi_data'
Signed-off-by: NLee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20200717135424.2442271-12-lee.jones@linaro.orgSigned-off-by: NMark Brown <broonie@kernel.org>
      decf5326
    • L
      spi: spi-zynqmp-gqspi: Correct a couple of misspellings in kerneldoc · 4b42b0b4
      由 Lee Jones 提交于 
      Fixes the following W=1 kernel build warning(s):

 drivers/spi/spi-zynqmp-gqspi.c:205: warning: Function parameter or member 'slavecs' not described in 'zynqmp_gqspi_selectslave'
 drivers/spi/spi-zynqmp-gqspi.c:205: warning: Function parameter or member 'slavebus' not described in 'zynqmp_gqspi_selectslave'
 drivers/spi/spi-zynqmp-gqspi.c:205: warning: Excess function parameter 'flashcs' description in 'zynqmp_gqspi_selectslave'
 drivers/spi/spi-zynqmp-gqspi.c:205: warning: Excess function parameter 'flashbus' description in 'zynqmp_gqspi_selectslave'
 drivers/spi/spi-zynqmp-gqspi.c:902: warning: Function parameter or member 'dev' not described in 'zynqmp_qspi_suspend'
 drivers/spi/spi-zynqmp-gqspi.c:902: warning: Excess function parameter '_dev' description in 'zynqmp_qspi_suspend'
Signed-off-by: NLee Jones <lee.jones@linaro.org>
Reviewed-by: NMichal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/20200717135424.2442271-11-lee.jones@linaro.orgSigned-off-by: NMark Brown <broonie@kernel.org>
      4b42b0b4
    • L
      spi: spi-zynq-qspi: Add description for 2 missing attributes/parameters · e867feec
      由 Lee Jones 提交于 
      Fixes the following W=1 kernel build warning(s):

 drivers/spi/spi-zynq-qspi.c:143: warning: Function parameter or member 'dev' not described in 'zynq_qspi'
 drivers/spi/spi-zynq-qspi.c:334: warning: Function parameter or member 'spi' not described in 'zynq_qspi_config_op'
 drivers/spi/spi-zynq-qspi.c:334: warning: Excess function parameter 'qspi' description in 'zynq_qspi_config_op'
Signed-off-by: NLee Jones <lee.jones@linaro.org>
Reviewed-by: NMichal Simek <michal.simek@xilinx.com>
Cc: Sureshkumar Relli <nagasure@xilinx.com>
Link: https://lore.kernel.org/r/20200717135424.2442271-10-lee.jones@linaro.orgSigned-off-by: NMark Brown <broonie@kernel.org>
      e867feec