Sean Anderson 9860370c21 gpio: xilinx: Convert gpio_lock to raw spinlock ... irq_chip functions may be called in raw spinlock context. Therefore, we must also use a raw spinlock for our own internal locking. This fixes the following lockdep splat: [ 5.349336] ============================= [ 5.353349] [ BUG: Invalid wait context ] [ 5.357361] 6.13.0-rc5+ #69 Tainted: G W [ 5.363031] ----------------------------- [ 5.367045] kworker/u17:1/44 is trying to lock: [ 5.371587] ffffff88018b02c0 (&chip->gpio_lock){....}-{3:3}, at: xgpio_irq_unmask (drivers/gpio/gpio-xilinx.c:433 (discriminator 8)) [ 5.380079] other info that might help us debug this: [ 5.385138] context-{5:5} [ 5.387762] 5 locks held by kworker/u17:1/44: [ 5.392123] #0: ffffff8800014958 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work (kernel/workqueue.c:3204) [ 5.402260] #1: ffffffc082fcbdd8 (deferred_probe_work){+.+.}-{0:0}, at: process_one_work (kernel/workqueue.c:3205) [ 5.411528] #2: ffffff880172c900 (&dev->mutex){....}-{4:4}, at: __device_attach (drivers/base/dd.c:1006) [ 5.419929] #3: ffffff88039c8268 (request_class#2){+.+.}-{4:4}, at: __setup_irq (kernel/irq/internals.h:156 kernel/irq/manage.c:1596) [ 5.428331] #4: ffffff88039c80c8 (lock_class#2){....}-{2:2}, at: __setup_irq (kernel/irq/manage.c:1614) [ 5.436472] stack backtrace: [ 5.439359] CPU: 2 UID: 0 PID: 44 Comm: kworker/u17:1 Tainted: G W 6.13.0-rc5+ #69 [ 5.448690] Tainted: [W]=WARN [ 5.451656] Hardware name: xlnx,zynqmp (DT) [ 5.455845] Workqueue: events_unbound deferred_probe_work_func [ 5.461699] Call trace: [ 5.464147] show_stack+0x18/0x24 C [ 5.467821] dump_stack_lvl (lib/dump_stack.c:123) [ 5.471501] dump_stack (lib/dump_stack.c:130) [ 5.474824] __lock_acquire (kernel/locking/lockdep.c:4828 kernel/locking/lockdep.c:4898 kernel/locking/lockdep.c:5176) [ 5.478758] lock_acquire (arch/arm64/include/asm/percpu.h:40 kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5851 kernel/locking/lockdep.c:5814) [ 5.482429] _raw_spin_lock_irqsave (include/linux/spinlock_api_smp.h:111 kernel/locking/spinlock.c:162) [ 5.486797] xgpio_irq_unmask (drivers/gpio/gpio-xilinx.c:433 (discriminator 8)) [ 5.490737] irq_enable (kernel/irq/internals.h:236 kernel/irq/chip.c:170 kernel/irq/chip.c:439 kernel/irq/chip.c:432 kernel/irq/chip.c:345) [ 5.494060] __irq_startup (kernel/irq/internals.h:241 kernel/irq/chip.c:180 kernel/irq/chip.c:250) [ 5.497645] irq_startup (kernel/irq/chip.c:270) [ 5.501143] __setup_irq (kernel/irq/manage.c:1807) [ 5.504728] request_threaded_irq (kernel/irq/manage.c:2208) Fixes: a32c7caea2 ("gpio: gpio-xilinx: Add interrupt support") Signed-off-by: Sean Anderson <sean.anderson@linux.dev> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20250110163354.2012654-1-sean.anderson@linux.dev Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>		2025-01-14 14:04:38 +01:00
..
gpio-74x164.c
gpio-74xx-mmio.c
gpio-104-dio-48e.c
gpio-104-idi-48.c
gpio-104-idio-16.c
gpio-adnp.c
gpio-adp5520.c
gpio-adp5585.c
gpio-aggregator.c
gpio-altera-a10sr.c
gpio-altera.c
gpio-amd-fch.c
gpio-amd8111.c
gpio-amdpt.c
gpio-arizona.c
gpio-aspeed-sgpio.c
gpio-aspeed.c
gpio-ath79.c
gpio-bcm-kona.c
gpio-bd9571mwv.c
gpio-bd71815.c
gpio-bd71828.c
gpio-brcmstb.c
gpio-bt8xx.c
gpio-cadence.c
gpio-cgbc.c
gpio-clps711x.c
gpio-creg-snps.c
gpio-cros-ec.c
gpio-crystalcove.c
gpio-cs5535.c
gpio-da9052.c
gpio-da9055.c
gpio-davinci.c
gpio-dln2.c
gpio-ds4520.c
gpio-dwapb.c
gpio-eic-sprd.c
gpio-elkhartlake.c
gpio-em.c
gpio-en7523.c
gpio-ep93xx.c
gpio-exar.c
gpio-f7188x.c
gpio-ftgpio010.c
gpio-fxl6408.c
gpio-ge.c
gpio-gpio-mm.c
gpio-graniterapids.c	gpio: graniterapids: Fix GPIO Ack functionality	2024-12-10 10:35:13 +01:00
gpio-grgpio.c
gpio-gw-pld.c
gpio-hisi.c
gpio-hlwd.c
gpio-htc-egpio.c
gpio-i8255.c
gpio-i8255.h
gpio-ich.c
gpio-idio-16.c	gpio: idio-16: Actually make use of the GPIO_IDIO_16 symbol namespace	2024-12-10 11:38:57 +01:00
gpio-idio-16.h
gpio-idt3243x.c
gpio-imx-scu.c
gpio-it87.c
gpio-ixp4xx.c
gpio-janz-ttl.c
gpio-kempld.c
gpio-latch.c
gpio-ljca.c	Linux 6.13-rc2	2024-12-10 11:38:38 +01:00
gpio-logicvc.c
gpio-loongson-64bit.c	gpio: loongson: Fix Loongson-2K2000 ACPI GPIO register offset	2025-01-08 09:54:20 +01:00
gpio-loongson.c
gpio-loongson1.c
gpio-lp873x.c
gpio-lp3943.c
gpio-lp87565.c
gpio-lpc18xx.c
gpio-lpc32xx.c
gpio-madera.c
gpio-max730x.c
gpio-max732x.c
gpio-max3191x.c
gpio-max7300.c
gpio-max7301.c
gpio-max77620.c
gpio-max77650.c
gpio-mb86s7x.c
gpio-mc33880.c
gpio-menz127.c
gpio-merrifield.c
gpio-ml-ioh.c
gpio-mlxbf.c
gpio-mlxbf2.c
gpio-mlxbf3.c
gpio-mm-lantiq.c
gpio-mmio.c
gpio-mockup.c
gpio-moxtet.c
gpio-mpc8xxx.c
gpio-mpc5200.c
gpio-mpfs.c
gpio-mpsse.c
gpio-msc313.c
gpio-mt7621.c
gpio-mvebu.c
gpio-mxc.c
gpio-mxs.c
gpio-nomadik.c
gpio-npcm-sgpio.c
gpio-octeon.c
gpio-omap.c
gpio-palmas.c
gpio-pca953x.c
gpio-pca9570.c
gpio-pcf857x.c
gpio-pch.c
gpio-pci-idio-16.c
gpio-pcie-idio-24.c
gpio-pisosr.c
gpio-pl061.c
gpio-pmic-eic-sprd.c
gpio-pxa.c
gpio-raspberrypi-exp.c
gpio-rc5t583.c
gpio-rcar.c
gpio-rda.c
gpio-rdc321x.c
gpio-realtek-otto.c
gpio-reg.c
gpio-regmap.c
gpio-rockchip.c
gpio-rtd.c
gpio-sa1100.c
gpio-sama5d2-piobu.c
gpio-sch.c
gpio-sch311x.c
gpio-sifive.c
gpio-sim.c	gpio: sim: lock up configfs that an instantiated device depends on	2025-01-03 17:15:04 +01:00
gpio-siox.c
gpio-sl28cpld.c
gpio-sloppy-logic-analyzer.c
gpio-sodaville.c
gpio-spear-spics.c
gpio-sprd.c
gpio-stmpe.c
gpio-stp-xway.c
gpio-syscon.c
gpio-tangier.c
gpio-tangier.h
gpio-tb10x.c
gpio-tc3589x.c
gpio-tegra.c
gpio-tegra186.c
gpio-thunderx.c
gpio-timberdale.c
gpio-tn48m.c
gpio-tpic2810.c
gpio-tps6586x.c
gpio-tps65086.c
gpio-tps65218.c
gpio-tps65219.c
gpio-tps65910.c
gpio-tps65912.c
gpio-tps68470.c
gpio-tqmx86.c
gpio-ts4800.c
gpio-ts4900.c
gpio-ts5500.c
gpio-twl4030.c
gpio-twl6040.c
gpio-uniphier.c
gpio-vf610.c
gpio-viperboard.c
gpio-virtio.c
gpio-virtuser.c	gpio: virtuser: lock up configfs that an instantiated device depends on	2025-01-03 17:15:04 +01:00
gpio-visconti.c
gpio-vx855.c
gpio-wcd934x.c
gpio-wcove.c
gpio-winbond.c
gpio-wm831x.c
gpio-wm8350.c
gpio-wm8994.c
gpio-ws16c48.c
gpio-xgene-sb.c
gpio-xgene.c
gpio-xgs-iproc.c
gpio-xilinx.c	gpio: xilinx: Convert gpio_lock to raw spinlock	2025-01-14 14:04:38 +01:00
gpio-xlp.c
gpio-xra1403.c
gpio-xtensa.c
gpio-zevio.c
gpio-zynq.c
gpio-zynqmp-modepin.c
gpiolib-acpi.c
gpiolib-acpi.h
gpiolib-cdev.c
gpiolib-cdev.h
gpiolib-devres.c
gpiolib-legacy.c
gpiolib-of.c
gpiolib-of.h
gpiolib-swnode.c
gpiolib-swnode.h
gpiolib-sysfs.c
gpiolib-sysfs.h
gpiolib.c
gpiolib.h
Kconfig
Makefile
TODO