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Marc Zyngier 005c34ae4b irqchip/gic: Atomically update affinity 
The GIC driver uses a RMW sequence to update the affinity, and
relies on the gic_lock_irqsave/gic_unlock_irqrestore sequences
to update it atomically.

But these sequences only expand into anything meaningful if
the BL_SWITCHER option is selected, which almost never happens.

It also turns out that using a RMW and locks is just as silly,
as the GIC distributor supports byte accesses for the GICD_TARGETRn
registers, which when used make the update atomic by definition.

Drop the terminally broken code and replace it by a byte write.

Fixes: 04c8b0f82c7d ("irqchip/gic: Make locking a BL_SWITCHER only feature")
Cc: stable@vger.kernel.org
Signed-off-by: Marc Zyngier <maz@kernel.org>
2020-06-21 15:24:46 +01:00
..
alphascale_asm9260-icoll.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
exynos-combiner.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
irq-al-fic.c
irqchip/al-fic: Add support for irq retrigger
2019-09-09 18:11:47 +01:00
irq-alpine-msi.c
treewide: kzalloc() -> kcalloc()
2018-06-12 16:19:22 -07:00
irq-armada-370-xp.c
irqchip updates for 4.14
2017-08-31 20:12:51 +02:00
irq-aspeed-i2c-ic.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
irq-aspeed-scu-ic.c
irqchip: Add Aspeed SCU interrupt controller
2020-01-20 19:10:04 +00:00
irq-aspeed-vic.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
irq-ath79-cpu.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
irq-ath79-misc.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
irq-ativic32.c
nds32: Power management for nds32
2018-11-06 18:01:41 +08:00
irq-atmel-aic5.c
irqchip/atmel-aic5: Fix irq_retrigger callback return value
2020-03-16 15:48:54 +00:00
irq-atmel-aic-common.c
irqchip/atmel-aic: Remove root argument from ->fixup() prototype
2017-07-04 11:10:37 +01:00
irq-atmel-aic-common.h
irqchip/atmel-aic: Remove root argument from ->fixup() prototype
2017-07-04 11:10:37 +01:00
irq-atmel-aic.c
irqchip/atmel-aic: Fix irq_retrigger callback return value
2020-03-16 15:48:54 +00:00
irq-bcm2835.c
irqchip/bcm2835: Quiesce IRQs left enabled by bootloader
2020-03-16 15:48:54 +00:00
irq-bcm2836.c
irqchip: bcm283x: Switch to SPDX identifier
2018-12-13 09:35:36 +00:00
irq-bcm6345-l1.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
irq-bcm7038-l1.c
irqchip/irq-bcm7038-l1: Make bcm7038_l1_of_init() static
2020-04-17 08:59:30 +01:00
irq-bcm7120-l2.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
irq-brcmstb-l2.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174
2019-05-30 11:26:41 -07:00
irq-clps711x.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
irq-crossbar.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
irq-csky-apb-intc.c
irqchip/csky: fixup handle_irq_perbit break irq
2019-01-09 00:18:46 +08:00
irq-csky-mpintc.c
Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-07-08 11:01:13 -07:00
irq-davinci-aintc.c
irqchip: davinci-aintc: move the driver to drivers/irqchip
2019-02-19 20:02:17 +05:30
irq-davinci-cp-intc.c
irqchip: davinci-cp-intc: move the driver to drivers/irqchip
2019-02-19 20:03:42 +05:30
irq-digicolor.c
irqchip: Convert to using %pOF instead of full_name
2017-08-23 10:09:28 +01:00
irq-dw-apb-ictl.c
genirq: Fix various typos in comments
2018-12-18 14:22:28 +01:00
irq-eznps.c
irqchip/eznps: Drop pointless static qualifier in nps400_of_init()
2016-10-19 14:24:36 +02:00
irq-ftintc010.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
irq-gic-common.c
irqchip/gic: Skip DT quirks when evaluating IIDR-based quirks
2019-08-20 10:23:35 +01:00
irq-gic-common.h
irqchip/gic: Prepare for more than 16 PPIs
2019-08-20 10:23:34 +01:00
irq-gic-pm.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
irq-gic-realview.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
irq-gic-v2m.c
PCI: Remove unused includes and superfluous struct declaration
2019-11-21 07:49:29 -06:00
irq-gic-v3-its-fsl-mc-msi.c
irqchip/gic-v3-its: Move minimum LPI requirements to individual busses
2018-07-16 14:22:19 +01:00
irq-gic-v3-its-pci-msi.c
PCI: Remove unused includes and superfluous struct declaration
2019-11-21 07:49:29 -06:00
irq-gic-v3-its-platform-msi.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
irq-gic-v3-its.c
irqchip/gic-v4.1: Use readx_poll_timeout_atomic() to fix sleep in atomic
2020-06-21 15:13:11 +01:00
irq-gic-v3-mbi.c
irqchip/gic-v3-mbi: Don't map the MSI page in mbi_compose_m{b, s}i_msg()
2019-05-03 15:30:03 +01:00
irq-gic-v3.c
irqchip/gic-v2, v3: Drop extra IRQ_NOAUTOEN setting for (E)PPIs
2020-05-25 10:32:51 +01:00
irq-gic-v4.c
irqchip/gic-v4.1: Add VSGI property setup
2020-03-24 12:15:51 +00:00
irq-gic.c
irqchip/gic: Atomically update affinity
2020-06-21 15:24:46 +01:00
irq-goldfish-pic.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
irq-hip04.c
irqchip/gic: Prepare for more than 16 PPIs
2019-08-20 10:23:34 +01:00
irq-i8259.c
irqchip: Replace setup_irq() by request_irq()
2020-03-08 14:25:46 +00:00
irq-imgpdc.c
irqchip: Remove dev_err() usage after platform_get_irq()
2019-08-20 10:35:55 +01:00
irq-imx-gpcv2.c
irqchip fixes for 5.3
2019-08-01 20:21:00 +02:00
irq-imx-intmux.c
irqchip: Add NXP INTMUX interrupt multiplexer support
2020-01-20 19:10:05 +00:00
irq-imx-irqsteer.c
irqchip/imx-irqsteer: Use devm_platform_ioremap_resource() to simplify code
2019-04-29 15:45:00 +01:00
irq-ingenic-tcu.c
irqchip/ingenic: Add support for TCU of X1000.
2020-03-22 11:52:52 +00:00
irq-ingenic.c
irqchip: Replace setup_irq() by request_irq()
2020-03-08 14:25:46 +00:00
irq-ixp4xx.c
irqchip/ixp4xx: Register the base PA instead of its VA in fwnode
2019-08-07 14:24:41 +01:00
irq-jcore-aic.c
irqchip/jcore: Fix lost per-cpu interrupts
2016-10-14 14:26:55 +02:00
irq-keystone.c
irqchip: Remove dev_err() usage after platform_get_irq()
2019-08-20 10:35:55 +01:00
irq-loongson-htpic.c
irqchip: Add driver for Loongson-3 HyperTransport PIC controller
2020-03-25 10:56:43 +01:00
irq-loongson-htvec.c
irqchip: Add Loongson HyperTransport Vector support
2020-05-29 09:42:18 +01:00
irq-loongson-liointc.c
irqchip: loongson-liointc: Workaround LPC IRQ Errata
2020-03-25 10:56:00 +01:00
irq-loongson-pch-msi.c
irqchip: Add Loongson PCH MSI controller
2020-05-29 09:42:18 +01:00
irq-loongson-pch-pic.c
irqchip: Add Loongson PCH PIC controller
2020-05-29 09:42:18 +01:00
irq-lpc32xx.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 159
2019-05-30 11:26:37 -07:00
irq-ls1x.c
irqchip/irq-ls1x: Missing error code in ls1x_intc_of_init()
2019-04-05 14:37:56 +02:00
irq-ls-extirq.c
irqchip: Add support for Layerscape external interrupt lines
2019-11-10 18:47:49 +00:00
irq-ls-scfg-msi.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
irq-madera.c
irqchip/madera: Drop GPIO includes
2019-01-17 17:04:24 +00:00
irq-mbigen.c
irqchip/mbigen: Free msi_desc on device teardown
2020-04-17 08:59:27 +01:00
irq-meson-gpio.c
irqchip/meson-gpio: Fix HARDIRQ-safe -> HARDIRQ-unsafe lock order
2020-04-17 08:59:29 +01:00
irq-mips-cpu.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
irq-mips-gic.c
remove ioremap_nocache and devm_ioremap_nocache
2020-01-06 09:45:59 +01:00
irq-mmp.c
irqchip/mmp: Coexist with GIC root IRQ controller
2019-08-30 15:23:30 +01:00
irq-mscc-ocelot.c
irqchhip: Convert to using %pOFn instead of device_node.name
2018-12-13 09:35:56 +00:00
irq-mtk-cirq.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174
2019-05-30 11:26:41 -07:00
irq-mtk-sysirq.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174
2019-05-30 11:26:41 -07:00
irq-mvebu-gicp.c
treewide: devm_kzalloc() -> devm_kcalloc()
2018-06-12 16:19:22 -07:00
irq-mvebu-icu.c
irqchip/irq-mvebu-icu: Make legacy_bindings static
2020-04-17 08:59:29 +01:00
irq-mvebu-odmi.c
irqchip/gic: Return IRQ_SET_MASK_OK_DONE in the set_affinity method
2016-02-19 15:42:29 +00:00
irq-mvebu-pic.c
irqchip/mvebu-pic: New driver for Marvell Armada 7K/8K PIC
2016-08-22 22:58:27 +00:00
irq-mvebu-sei.c
irqchip/irq-mvebu-sei: Make mvebu_sei_ap806_caps static
2019-03-21 16:43:00 +01:00
irq-mxs.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1
2019-05-21 11:28:39 +02:00
irq-nvic.c
irqchip/nvic: Use irq_domain_translate_onecell instead of custom func
2020-01-20 09:24:47 +00:00
irq-omap-intc.c
irqchip/irq-omap-intc: Do not statically initialize variables
2017-10-16 21:05:14 +02:00
irq-ompic.c
irqchip/ompic: fix return value check in ompic_of_init()
2018-01-04 11:13:22 +00:00
irq-or1k-pic.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
irq-orion.c
irqchip: Convert to using %pOFn instead of device_node.name
2018-11-27 10:54:17 -06:00
irq-partition-percpu.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234
2019-06-19 17:09:07 +02:00
irq-pic32-evic.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
irq-rda-intc.c
irqchip/irq-rda-intc: Fix return value check in rda8810_intc_init()
2018-12-18 12:55:23 +00:00
irq-renesas-h8s.c
genirq: Fix various typos in comments
2018-12-18 14:22:28 +01:00
irq-renesas-h8300h.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
irq-renesas-intc-irqpin.c
irqchip/renesas-intc-irqpin: Restore devm_ioremap() alignment
2020-03-08 14:25:46 +00:00
irq-renesas-irqc.c
irqchip/renesas-irqc: Use proper irq_chip name and parent
2019-06-11 12:22:42 +01:00
irq-renesas-rza1.c
irqchip/renesas-rza1: Fix an use-after-free in rza1_irqc_probe()
2019-07-26 14:40:01 +01:00
irq-riscv-intc.c
irqchip/riscv-intc: Fix a typo in a pr_warn()
2020-06-21 15:15:41 +01:00
irq-s3c24xx.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
irq-sa11x0.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
irq-sifive-plic.c
irqchip: RISC-V per-HART local interrupt controller driver
2020-06-09 19:11:21 -07:00
irq-sirfsoc.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 4
2019-05-21 11:28:40 +02:00
irq-sni-exiu.c
Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-07-08 11:01:13 -07:00
irq-st.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
irq-stm32-exti.c
irqchip/stm32: Add irq retrigger support
2020-03-08 14:25:45 +00:00
irq-sun4i.c
irqchip/sun4i: Add support for Allwinner ARMv5 F1C100s
2018-12-13 09:35:58 +00:00
irq-sunxi-nmi.c
irqchip/sunxi-nmi: Support sun6i-a31-r-intc compatible
2017-06-22 14:08:17 +01:00
irq-tango.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
irq-tb10x.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 333
2019-06-05 17:37:06 +02:00
irq-tegra.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282
2019-06-05 17:36:37 +02:00
irq-ti-sci-inta.c
irqchip/ti-sci-inta: Fix processing of masked irqs
2020-04-17 08:59:28 +01:00
irq-ti-sci-intr.c
irqchip/ti-sci-intr: Add support for Interrupt Router driver
2019-05-01 10:48:56 +01:00
irq-ts4800.c
irqchip/ts4800: Make ts4800_ic_ops static const
2016-02-18 02:09:18 +00:00
irq-uniphier-aidet.c
irqchip/uniphier-aidet: Use devm_platform_ioremap_resource()
2019-09-05 09:28:13 +01:00
irq-versatile-fpga.c
irqchip/versatile-fpga: Apply clear-mask earlier
2020-03-22 11:52:16 +00:00
irq-vf610-mscm-ir.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
irq-vic.c
irqchip: vic: Support cascaded VIC in device tree
2020-03-08 14:25:45 +00:00
irq-vt8500.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
irq-xilinx-intc.c
Revert "irqchip/xilinx: Enable generic irq multi handler"
2020-04-01 09:12:24 +01:00
irq-xtensa-mx.c
drivers/irqchip: xtensa-mx: fix mask and unmask
2019-01-26 02:02:15 -08:00
irq-xtensa-pic.c
drivers/irqchip: xtensa: add warning to irq_retrigger
2019-01-26 02:02:14 -08:00
irq-zevio.c
irqchip: Remove redundant semicolon after while
2019-11-10 18:47:44 +00:00
irqchip.c
irqchip / GIC: Convert the GIC driver to ACPI probing
2015-10-01 02:18:38 +02:00
Kconfig
irqchip/loongson-pci-msi: Fix a typo in Kconfig
2020-06-21 15:13:11 +01:00
Makefile
irqchip: RISC-V per-HART local interrupt controller driver
2020-06-09 19:11:21 -07:00
qcom-irq-combiner.c
irqchip/qcom-irq-combiner: Replace zero-length array with flexible-array member
2020-03-22 11:52:52 +00:00
qcom-pdc.c
irqchip/qcom-pdc: Add irqchip set/get state calls
2019-11-16 10:22:01 +00:00
spear-shirq.c
remove lots of IS_ERR_VALUE abuses
2016-05-27 15:26:11 -07:00