gpiod_set_value_nocheck(9)

💅 gpiod_set_value_nocheck(9) — Kernel API Manual, but make it make sense

okay so bestie, welcome to the kernel API manual for gpiod_set_value_nocheck — yes that's the function name, yes it's a mouthful, yes the nocheck part is doing a lot of work in that name ✨

---

🌸 NAME

gpiod_set_value_nocheck — set a GPIO line value without checking 🎀

---

⭐ SYNOPSIS

int gpiod_set_value_nocheck (struct gpio_desc *desc , int value );

that's it. that's the whole vibe. one descriptor, one value, one int coming back at you 💖

---

🦋 ARGUMENTS

• desc — the descriptor you're setting the value on. this is your main character 🫶
• value — the value to set. that's the whole assignment, no notes 💅

---

🔥 DESCRIPTION

So what does it actually do? It sets the value of a GPIO line backing a descriptor, and while it's doing that it applies the different semantic quirks — think active low, and open drain / open source handling. like, the line has layers, and this function respects them 😭✨

it's giving "i know what i'm doing" energy. the nocheck in the name is literally in the name. iykyk.

---

👑 RETURN

• 0 on success 🎉
• negative error number on failure 💀

periodt.

---

🌈 SEE ALSO

okay this is the part where the manual just absolutely unloads the entire GPIO friend group. buckle up bestie, we're listing every single one, no skipping, no cap:

• gpio_to_desc(9), gpio_device_get_desc(9), desc_to_gpio(9), gpiod_hwgpio(9)
• gpiod_to_chip(9), gpiod_to_gpio_device(9), gpio_device_get_base(9), gpio_device_get_label(9), gpio_device_get_chip(9)
• gpiochip_find_base_unlocked(9), gpiod_is_equal(9), gpiod_get_direction(9), gpiod_is_single_ended(9)
• gpiochip_query_valid_mask(9), gpiochip_get_data(9), gpiochip_remove(9)
• gpio_device_find(9), gpio_device_find_by_label(9), gpio_device_find_by_fwnode(9), gpio_device_get(9), gpio_device_put(9), gpio_device_to_device(9)
• gpiochip_set_hierarchical_irqchip(9), gpiochip_irq_domain_activate(9), gpiochip_irq_domain_deactivate(9), gpiochip_irq_map(9), gpiochip_add_irqchip(9), gpiochip_irqchip_remove(9), gpiochip_irqchip_add_domain(9)
• gpiochip_generic_request(9), gpiochip_generic_free(9), gpiochip_generic_config(9)
• gpiochip_add_pingroup_range(9), gpiochip_add_pin_range_with_pins(9), gpiochip_remove_pin_ranges(9)
• gpiochip_dup_line_label(9), gpiochip_request_own_desc(9), gpiochip_free_own_desc(9)
• gpio_set_debounce_timeout(9)
• gpiod_direction_input(9), gpiod_direction_output_raw(9), gpiod_direction_output(9)
• gpiod_enable_hw_timestamp_ns(9), gpiod_disable_hw_timestamp_ns(9)
• gpiod_set_config(9), gpiod_set_debounce(9), gpiod_set_transitory(9)
• gpiod_is_active_low(9), gpiod_toggle_active_low(9)
• gpiod_get_raw_value(9), gpiod_get_value(9), gpiod_get_raw_array_value(9), gpiod_get_array_value(9)
• gpiod_set_raw_value(9), gpiod_set_value(9), gpiod_set_raw_array_value(9), gpiod_set_array_value(9)
• gpiod_cansleep(9), gpiod_set_consumer_name(9), gpiod_is_shared(9)
• gpiod_to_irq(9), gpiochip_lock_as_irq(9), gpiochip_unlock_as_irq(9)
• gpiod_get_raw_value_cansleep(9), gpiod_get_value_cansleep(9), gpiod_get_raw_array_value_cansleep(9), gpiod_get_array_value_cansleep(9)
• gpiod_set_raw_value_cansleep(9), gpiod_set_value_cansleep(9), gpiod_set_raw_array_value_cansleep(9), gpiod_add_lookup_tables(9), gpiod_set_array_value_cansleep(9)
• gpiod_add_lookup_table(9), gpiod_remove_lookup_table(9)
• fwnode_gpiod_get_index(9), gpiod_count(9), gpiod_get(9), gpiod_get_optional(9), gpiod_configure_flags(9)
• gpiod_get_index(9), gpiod_get_index_optional(9), gpiod_hog(9), gpiochip_free_hogs(9)
• gpiod_get_array(9), gpiod_get_array_optional(9), gpiod_put(9), gpiod_put_array(9)

and for the source crew: the kernel file is ./drivers/gpio/gpiolib.c 🧚

---

lowkey obsessed with how this one function has this many friends. it's giving popularity, it's giving networking, it's giving "i know a guy" 💜

---

okay that's the whole page bestie!! this little beauty comes from the ./drivers/gpio source, dated October 2026 — screenshot it, memorize it, slay the kernel 🎀💖✨