From 83969805cc716a7dc6b296c3fb1bc7e5cd7ca321 Mon Sep 17 00:00:00 2001 From: Hector Martin Date: Tue, 24 May 2022 23:22:06 +0900 Subject: [PATCH] pinctrl: apple: Use a raw spinlock for the regmap The irqchip ops are called with a raw spinlock held, so the subsequent regmap usage cannot use a plain spinlock. spi-hid-apple-of spi0.0: spihid_apple_of_probe:74 ============================= [ BUG: Invalid wait context ] 5.18.0-asahi-00176-g0fa3ab03bdea #1337 Not tainted ----------------------------- kworker/u20:3/86 is trying to lock: ffff8000166b5018 (pinctrl_apple_gpio:462:(®map_config)->lock){....}-{3:3}, at: regmap_lock_spinlock+0x18/0x30 other info that might help us debug this: context-{5:5} 7 locks held by kworker/u20:3/86: #0: ffff800017725d48 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x1c8/0x670 #1: ffff80001e33bdd0 (deferred_probe_work){+.+.}-{0:0}, at: process_one_work+0x1c8/0x670 #2: ffff800017d629a0 (&dev->mutex){....}-{4:4}, at: __device_attach+0x30/0x17c #3: ffff80002414e618 (&ctlr->add_lock){+.+.}-{4:4}, at: spi_add_device+0x40/0x80 #4: ffff800024116990 (&dev->mutex){....}-{4:4}, at: __device_attach+0x30/0x17c #5: ffff800022d4be58 (request_class){+.+.}-{4:4}, at: __setup_irq+0xa8/0x720 #6: ffff800022d4bcc8 (lock_class){....}-{2:2}, at: __setup_irq+0xcc/0x720 Fixes: a0f160ffcb83 ("pinctrl: add pinctrl/GPIO driver for Apple SoCs") Signed-off-by: Hector Martin Link: https://lore.kernel.org/r/20220524142206.18833-1-marcan@marcan.st Signed-off-by: Linus Walleij --- drivers/pinctrl/pinctrl-apple-gpio.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/pinctrl/pinctrl-apple-gpio.c b/drivers/pinctrl/pinctrl-apple-gpio.c index bc1b66349073..2490384ef1b8 100644 --- a/drivers/pinctrl/pinctrl-apple-gpio.c +++ b/drivers/pinctrl/pinctrl-apple-gpio.c @@ -71,6 +71,7 @@ struct regmap_config regmap_config = { .max_register = 512 * sizeof(u32), .num_reg_defaults_raw = 512, .use_relaxed_mmio = true, + .use_raw_spinlock = true, }; /* No locking needed to mask/unmask IRQs as the interrupt mode is per pin-register. */