linux-stable.git/drivers/irqchip, branch linux-6.16.y

irqchip/mvebu-gicp: Fix an IS_ERR() vs NULL check in probe()

2025-09-19T14:37:26+00:00

[ Upstream commit c8bb0f00a4886b24d933ffaabcdc09bf9a370dca ]

ioremap() never returns error pointers, it returns NULL on error.  Fix the
check to match.

Fixes: 3c3d7dbab2c7 ("irqchip/mvebu-gicp: Clear pending interrupts on init")
Signed-off-by: Dan Carpenter 
Signed-off-by: Thomas Gleixner 
Link: https://lore.kernel.org/all/aKRGcgMeaXm2TMIC@stanley.mountain
Signed-off-by: Sasha Levin

irqchip/mvebu-gicp: Use resource_size() for ioremap()

2025-08-20T16:41:43+00:00

commit 9f7488f24c7571d349d938061e0ede7a39b65d6b upstream.

0-day reported an off by one in the ioremap() sizing:

  drivers/irqchip/irq-mvebu-gicp.c:240:45-48: WARNING:
  Suspicious code. resource_size is maybe missing with gicp -> res

Convert it to resource_size(), which does the right thing.

Fixes: 3c3d7dbab2c7 ("irqchip/mvebu-gicp: Clear pending interrupts on init")
Reported-by: kernel test robot 
Signed-off-by: Thomas Gleixner 
Closes: https://lore.kernel.org/oe-kbuild-all/202508062150.mtFQMTXc-lkp@intel.com/
Signed-off-by: Greg Kroah-Hartman

irqchip/mvebu-gicp: Clear pending interrupts on init

2025-08-20T16:41:32+00:00

[ Upstream commit 3c3d7dbab2c70a4bca47634d564bf659351c05ca ]

When a kexec'ed kernel boots up, there might be stale unhandled interrupts
pending in the interrupt controller. These are delivered as spurious
interrupts once the boot CPU enables interrupts.

Clear all pending interrupts when the driver is initialized to prevent
these spurious interrupts from locking the CPU in an endless loop.

Signed-off-by: Elad Nachman 
Signed-off-by: Thomas Gleixner 
Link: https://lore.kernel.org/all/20250803102548.669682-2-enachman@marvell.com
Signed-off-by: Sasha Levin

irqchip/mips-gic: Allow forced affinity

2025-08-20T16:41:02+00:00

[ Upstream commit 2250db8628a0d8293ad2e0671138b848a185fba1 ]

Devices of the Realtek MIPS Otto platform use the official rtl-otto-timer
as clock event generator and CPU clocksource. It is registered for each CPU
startup via cpuhp_setup_state() and forces the affinity of the clockevent
interrupts to the appropriate CPU via irq_force_affinity().

On the "smaller" devices with a vendor specific interrupt controller
(supported by irq-realtek-rtl) the registration works fine. The "larger"
RTL931x series is based on a MIPS interAptiv dual core with a MIPS GIC
controller. Interrupt routing setup is cancelled because gic_set_affinity()
does not accept the current (not yet online) CPU as a target.

Relax the checks by evaluating the force parameter that is provided for
exactly this purpose like in other drivers. With this the affinity can be
set as follows:

 - force = false: allow to set affinity to any online cpu
 - force = true:  allow to set affinity to any cpu

Co-developed-by: Sebastian Gottschall 
Signed-off-by: Sebastian Gottschall 
Signed-off-by: Markus Stockhausen 
Signed-off-by: Thomas Gleixner 
Link: https://lore.kernel.org/all/20250621054952.380374-1-markus.stockhausen@gmx.de
Signed-off-by: Sasha Levin

irqchip/renesas-rzv2h: Enable SKIP_SET_WAKE and MASK_ON_SUSPEND

2025-08-20T16:41:01+00:00

[ Upstream commit de2942828e7670526289f098df7e50b112e8ff1e ]

The interrupt controller found on RZ/G3E doesn't provide any facility to
configure the wakeup sources. That's the reason why the driver lacks the
irq_set_wake() callback for the interrupt chip.

But this prevent to properly enter power management states like "suspend to
idle".

Enable the flags IRQCHIP_SKIP_SET_WAKE and IRQCHIP_MASK_ON_SUSPEND so the
interrupt suspend logic can handle the chip correctly.

Signed-off-by: Biju Das 
Signed-off-by: Thomas Gleixner 
Reviewed-by: Geert Uytterhoeven 
Link: https://lore.kernel.org/all/20250701105923.52151-1-biju.das.jz@bp.renesas.com
Signed-off-by: Sasha Levin

irqchip: Build IMX_MU_MSI only on ARM

2025-08-15T14:39:28+00:00

[ Upstream commit 3b6a18f0da8720d612d8a682ea5c55870da068e0 ]

Compile-testing IMX_MU_MSI on x86 without PCI_MSI support results in a
build failure:

drivers/gpio/gpio-sprd.c:8:
include/linux/gpio/driver.h:41:33: error: field 'msiinfo' has incomplete type
drivers/iommu/iommufd/viommu.c:4:
include/linux/msi.h:528:33: error: field 'alloc_info' has incomplete type

Tighten the dependency further to only allow compile testing on Arm.
This could be refined further to allow certain x86 configs.

This was submitted before to address a different build failure, which was
fixed differently, but the problem has now returned in a different form.

Fixes: 70afdab904d2d1e6 ("irqchip: Add IMX MU MSI controller driver")
Signed-off-by: Arnd Bergmann 
Signed-off-by: Thomas Gleixner 
Link: https://lore.kernel.org/all/20250805160952.4006075-1-arnd@kernel.org
Link: https://lore.kernel.org/all/20221215164109.761427-1-arnd@kernel.org/
Signed-off-by: Sasha Levin

irqchip/irq-msi-lib: Select CONFIG_GENERIC_MSI_IRQ

2025-06-30T14:59:12+00:00

irq-msi-lib directly uses struct msi_domain_info and more things which are
only available when CONFIG_GENERIC_MSI_IRQ=y.

However, there is no dependency specified and CONFIG_IRQ_MSI_LIB can be
enabled without CONFIG_GENERIC_MSI_IRQ, which causes the kernel build fail.

Make IRQ_MSI_LIB select GENEREIC_MSI_IRQ to prevent that.

Fixes: 72e257c6f058 ("irqchip: Provide irq-msi-lib")
Reported-by: kernel test robot 
Signed-off-by: Nam Cao 
Signed-off-by: Thomas Gleixner 
Link: https://lore.kernel.org/all/b0c44007f3b7e062228349a2395f8d850050db33.1751277765.git.namcao@linutronix.de
Closes: https://lore.kernel.org/oe-kbuild-all/202506282256.cHlEHrdc-lkp@intel.com/

irqchip/ath79-misc: Fix missing prototypes warnings

2025-06-20T19:38:52+00:00

ath79_misc_irq_init() was defined but unused since commit 51fa4f8912c0
("MIPS: ath79: drop legacy IRQ code"), so it's time to drop it.

The build also warns about a missing prototype of get_c0_perfcount_int().

Remove the stale leftover function and add the missing include.

Signed-off-by: Shiji Yang 
Signed-off-by: Thomas Gleixner 
Link: https://lore.kernel.org/all/OSBPR01MB167032D2017645200787AAEBBC72A@OSBPR01MB1670.jpnprd01.prod.outlook.com

Merge tag 'dmaengine-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine

2025-06-05T15:49:30+00:00

Pull dmaengine updates from Vinod Koul:
 "A fairly small update for the dmaengine subsystem. This has a new ARM
  dmaengine driver and couple of new device support and few driver
  changes:

  New support:
   - Renesas RZ/V2H(P) dma support for r9a09g057
   - Arm DMA-350 driver
   - Tegra Tegra264 ADMA support

  Updates:
   - AMD ptdma driver code removal and optimizations
   - Freescale edma error interrupt handler support"

* tag 'dmaengine-6.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (27 commits)
  dmaengine: idxd: Remove unused pointer and macro
  arm64: dts: renesas: r9a09g057: Add DMAC nodes
  dmaengine: sh: rz-dmac: Add RZ/V2H(P) support
  dmaengine: sh: rz-dmac: Allow for multiple DMACs
  irqchip/renesas-rzv2h: Add rzv2h_icu_register_dma_req()
  dt-bindings: dma: rz-dmac: Document RZ/V2H(P) family of SoCs
  dt-bindings: dma: rz-dmac: Restrict properties for RZ/A1H
  dmaengine: idxd: Narrow the restriction on BATCH to ver. 1 only
  dmaengine: ti: Add NULL check in udma_probe()
  fsldma: Set correct dma_mask based on hw capability
  dmaengine: idxd: Check availability of workqueue allocated by idxd wq driver before using
  dmaengine: xilinx_dma: Set dma_device directions
  dmaengine: tegra210-adma: Add Tegra264 support
  dt-bindings: Document Tegra264 ADMA support
  dmaengine: dw-edma: Add HDMA NATIVE map check
  dmaegnine: fsl-edma: add edma error interrupt handler
  dt-bindings: dma: fsl-edma: increase maxItems of interrupts and interrupt-names
  dmaengine: ARM_DMA350 should depend on ARM/ARM64
  dt-bindings: dma: qcom,bam: Document dma-coherent property
  dmaengine: Add Arm DMA-350 driver
  ...

Merge tag 'timers-cleanups-2025-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2025-05-27T15:31:21+00:00

Pull timer cleanups from Thomas Gleixner:
 "Another set of timer API cleanups:

    - Convert init_timer*(), try_to_del_timer_sync() and
      destroy_timer_on_stack() over to the canonical timer_*()
      namespace convention.

  There is another large conversion pending, which has not been included
  because it would have caused a gazillion of merge conflicts in next.
  The conversion scripts will be run towards the end of the merge window
  and a pull request sent once all conflict dependencies have been
  merged"

* tag 'timers-cleanups-2025-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  treewide, timers: Rename destroy_timer_on_stack() as timer_destroy_on_stack()
  treewide, timers: Rename try_to_del_timer_sync() as timer_delete_sync_try()
  timers: Rename init_timers() as timers_init()
  timers: Rename NEXT_TIMER_MAX_DELTA as TIMER_NEXT_MAX_DELTA
  timers: Rename __init_timer_on_stack() as __timer_init_on_stack()
  timers: Rename __init_timer() as __timer_init()
  timers: Rename init_timer_on_stack_key() as timer_init_key_on_stack()
  timers: Rename init_timer_key() as timer_init_key()