6.9-stable review patch. If anyone has any objections, please let me know.
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From: Jim Liu jim.t90615@gmail.com
[ Upstream commit 7f45fe2ea3b8c85787976293126a4a7133b107de ]
The generic_handle_domain_irq() function calls irq_resolve_mapping(). Thus delete a duplicative irq_find_mapping() call so that a stack trace and an RCU stall will be avoided.
Fixes: c4f8457d17ce ("gpio: nuvoton: Add Nuvoton NPCM sgpio driver") Signed-off-by: Jim Liu JJLIU0@nuvoton.com Reviewed-by: Linus Walleij linus.walleij@linaro.org Reviewed-by: Dan Carpenter dan.carpenter@linaro.org Link: https://lore.kernel.org/r/20240506064244.1645922-1-JJLIU0@nuvoton.com Signed-off-by: Bartosz Golaszewski bartosz.golaszewski@linaro.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpio/gpio-npcm-sgpio.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-)
diff --git a/drivers/gpio/gpio-npcm-sgpio.c b/drivers/gpio/gpio-npcm-sgpio.c index d31788b43abcc..2605706145434 100644 --- a/drivers/gpio/gpio-npcm-sgpio.c +++ b/drivers/gpio/gpio-npcm-sgpio.c @@ -434,7 +434,7 @@ static void npcm_sgpio_irq_handler(struct irq_desc *desc) struct gpio_chip *gc = irq_desc_get_handler_data(desc); struct irq_chip *ic = irq_desc_get_chip(desc); struct npcm_sgpio *gpio = gpiochip_get_data(gc); - unsigned int i, j, girq; + unsigned int i, j; unsigned long reg;
chained_irq_enter(ic, desc); @@ -443,11 +443,9 @@ static void npcm_sgpio_irq_handler(struct irq_desc *desc) const struct npcm_sgpio_bank *bank = &npcm_sgpio_banks[i];
reg = ioread8(bank_reg(gpio, bank, EVENT_STS)); - for_each_set_bit(j, ®, 8) { - girq = irq_find_mapping(gc->irq.domain, - i * 8 + gpio->nout_sgpio + j); - generic_handle_domain_irq(gc->irq.domain, girq); - } + for_each_set_bit(j, ®, 8) + generic_handle_domain_irq(gc->irq.domain, + i * 8 + gpio->nout_sgpio + j); }
chained_irq_exit(ic, desc);