linux-toradex.git/drivers/irqchip, branch v3.14

irq-metag*: stop set_affinity vectoring to offline cpus

2014-02-25T22:35:06+00:00

Fix irq_set_affinity callbacks in the Meta IRQ chip drivers to AND
cpu_online_mask into the cpumask when picking a CPU to vector the
interrupt to.

As Thomas pointed out, the /proc/irq/$N/smp_affinity interface doesn't
filter out offline CPUs, so without this patch if you offline CPU0 and
set an IRQ affinity to 0x3 it vectors the interrupt onto CPU0 even
though it is offline.

Reported-by: Thomas Gleixner 
Signed-off-by: James Hogan 
Cc: Thomas Gleixner 
Cc: linux-metag@vger.kernel.org
Cc: stable@vger.kernel.org

Merge tag 'irqchip-mvebu-fixes-3.14' of git://git.infradead.org/linux-mvebu into irq/urgent

2014-02-21T22:57:33+00:00

irqchip mvebu fixes for v3.14

 - orion:
    - fixes for clearing bridge cause register, and clearing stale interrupts

Signed-off-by: Thomas Gleixner

irqchip: orion: Fix getting generic chip pointer.

2014-02-21T21:46:56+00:00

Enabling SPARSE_IRQ shows up a bug in the irq-orion bridge interrupt
handler. The bridge interrupt is implemented using a single generic
chip. Thus the parameter passed to irq_get_domain_generic_chip()
should always be zero.

Signed-off-by: Andrew Lunn 
Acked-by: Sebastian Hesselbarth 
Fixes: 9dbd90f17e4f ("irqchip: Add support for Marvell Orion SoCs")
Cc:  # v3.11+
Signed-off-by: Jason Cooper

irqchip: orion: clear stale interrupts in irq_startup

2014-02-06T18:03:32+00:00

Bridge IRQ_CAUSE bits are asserted regardless of the corresponding bit in
IRQ_MASK register. To avoid interrupt events on stale irqs, we have to clear
them before unmask. This installs an .irq_startup callback to ensure stale
irqs are cleared before initial unmask.

Signed-off-by: Sebastian Hesselbarth 
Tested-by: Ezequiel Garcia 
Cc: : f56c0738b5c2: "irqchip: orion: clear bridge cause register on init"
Cc: : 38bd80b84fca: "irqchip: orion: use handle_edge_irq on bridge irqs"
Cc:  # v3.10+
Signed-off-by: Jason Cooper

irqchip: orion: use handle_edge_irq on bridge irqs

2014-02-06T18:03:22+00:00

Bridge irqs are edge-triggered, i.e. they get asserted on low-to-high
transitions and not on the level of the downstream interrupt line.
This replaces handle_level_irq by the more appropriate handle_edge_irq.

Signed-off-by: Sebastian Hesselbarth 
Tested-by: Ezequiel Garcia 
Cc: : f56c0738b5c2: "irqchip: orion: clear bridge cause register on init"
Cc:  # v3.10+
Signed-off-by: Jason Cooper

irqchip: orion: clear bridge cause register on init

2014-02-06T18:03:08+00:00

It is good practice to mask and clear pending irqs on init. We already
mask all irqs, so also clear the bridge irq cause register.

Signed-off-by: Sebastian Hesselbarth 
Tested-by: Ezequiel Garcia 
Cc:  # v3.10+
Signed-off-by: Jason Cooper

Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2014-02-06T00:02:53+00:00

Pull irq updates from Thomas Gleixner:
 "This lot provides:

   * Bugfixes for armada irq controller
   * Updates to renesas irq chip
   * Support for the TI-NSPIRE irq controller

  Not strictly a bug fix only pull request, but important updates for
  some of the arm Socs which I completely forgot to send last week.

  Seems like my obliviousness is getting worse, I just can't remember
  when it started"

* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip: Add support for TI-NSPIRE irqchip
  irqchip: renesas-irqc: Enable mask on suspend
  irqchip: renesas-irqc: Use lazy disable
  irqchip: armada-370-xp: fix MSI race condition
  irqchip: armada-370-xp: fix IPI race condition

Merge tag 'mvebu-fixes-3.13-2' of git://git.infradead.org/linux-mvebu into fixes

2014-01-31T22:59:28+00:00

mvebu fixes for v3.13 (incremental #2)

 - allow building and booting DT and non-DT plat-orion SoCs
 - catch proper return value for kirkwood_pm_init()
 - properly check return of of_iomap to solve boot hangs (mirabox, others)
 - remove a compile warning on Armada 370 with non-SMP.

* tag 'mvebu-fixes-3.13-2' of git://git.infradead.org/linux-mvebu:
  ARM: mvebu: fix compilation warning on Armada 370 (i.e. non-SMP)
  ARM: mvebu: Fix kernel hang in mvebu_soc_id_init() when of_iomap failed
  ARM: kirkwood: kirkwood_pm_init() should return void
  ARM: orion: provide C-style interrupt handler for MULTI_IRQ_HANDLER

Signed-off-by: Olof Johansson

Merge tag 'xtensa-next-20140123' of git://github.com/czankel/xtensa-linux

2014-01-25T18:49:30+00:00

Pull Xtensa patches from Chris Zankel:
 "The major changes are adding support for SMP for Xtensa, fixing and
  cleaning up the ISS (simulator) network driver, and better support for
  device trees"

* tag 'xtensa-next-20140123' of git://github.com/czankel/xtensa-linux: (40 commits)
  xtensa: implement ndelay
  xtensa: clean up udelay
  xtensa: enable HAVE_PERF_EVENTS
  xtensa: remap io area defined in device tree
  xtensa: support default device tree buses
  xtensa: initialize device tree clock sources
  xtensa: xtfpga: fix definitions of platform devices
  xtensa: standardize devicetree cpu compatible strings
  xtensa: avoid duplicate of IO range definitions
  xtensa: fix ATOMCTL register documentation
  xtensa: Enable irqs after cpu is set online
  xtensa: ISS: raise network polling rate to 10 times/sec
  xtensa: remove unused XTENSA_ISS_NETWORK Kconfig parameter
  xtensa: ISS: avoid simple_strtoul usage
  xtensa: Switch to sched_clock_register()
  xtensa: implement CPU hotplug
  xtensa: add SMP support
  xtensa: add MX irqchip
  xtensa: clear timer IRQ unconditionally in its handler
  xtensa: clean up do_interrupt/do_IRQ
  ...

Merge tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

2014-01-24T02:49:36+00:00

Pull ARM driver updates from Olof Johansson:
 "Updates of SoC-near drivers and other driver updates that makes more
  sense to take through our tree.

  The largest part of this is a conversion of device registration for
  some renesas shmobile/sh devices over to use resources.  This has
  required coordination with the corresponding arch/sh changes, and
  we've agreed to merge the arch/sh changes through our tree.

  Added in this branch is support for Trusted Foundations secure
  firmware, which is what is used on many of the commercial Nvidia Tegra
  products that are in the market, including the Nvidia Shield.  The
  code is local to arch/arm at this time since it's uncertain whether it
  will be shared with arm64 longer-term, if needed we will refactor
  later.

  A couple of new RTC drivers used on ARM boards, merged through our
  tree on request by the RTC maintainer.

  ... plus a bunch of smaller updates across the board, gpio conversions
  for davinci, etc"

* tag 'drivers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (45 commits)
  watchdog: davinci: rename platform driver to davinci-wdt
  tty: serial: Limit msm_serial_hs driver to platforms that use it
  mmc: msm_sdcc: Limit driver to platforms that use it
  usb: phy: msm: Move mach dependent code to platform data
  clk: versatile: fixup IM-PD1 clock implementation
  clk: versatile: pass a name to ICST clock provider
  ARM: integrator: pass parent IRQ to the SIC
  irqchip: versatile FPGA: support cascaded interrupts from DT
  gpio: davinci: don't create irq_domain in case of unbanked irqs
  gpio: davinci: use chained_irq_enter/chained_irq_exit API
  gpio: davinci: add OF support
  gpio: davinci: remove unused variable intc_irq_num
  gpio: davinci: convert to use irqdomain support.
  gpio: introduce GPIO_DAVINCI kconfig option
  gpio: davinci: get rid of DAVINCI_N_GPIO
  gpio: davinci: use {readl|writel}_relaxed() instead of __raw_*
  serial: sh-sci: Add OF support
  serial: sh-sci: Add device tree bindings documentation
  serial: sh-sci: Remove platform data mapbase and irqs fields
  serial: sh-sci: Remove platform data scbrr_algo_id field
  ...