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authorHector Martin <marcan@marcan.st>2022-05-24 17:22:06 +0300
committerLinus Walleij <linus.walleij@linaro.org>2022-05-25 10:37:44 +0300
commit83969805cc716a7dc6b296c3fb1bc7e5cd7ca321 (patch)
treed6234a58882e72da77ab5278c0557fa02f2e99f7 /drivers/pinctrl
parent374e72d721d1b0c545d98d8767a346b9007278ef (diff)
downloadlinux-83969805cc716a7dc6b296c3fb1bc7e5cd7ca321.tar.xz
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:(&regmap_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 <marcan@marcan.st> Link: https://lore.kernel.org/r/20220524142206.18833-1-marcan@marcan.st Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl')
-rw-r--r--drivers/pinctrl/pinctrl-apple-gpio.c1
1 files changed, 1 insertions, 0 deletions
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. */