spi_nor_read_any_reg(9)

💅 spi_nor_read_any_reg — NAME ✨

okay so bestie, welcome to the kernel API manual 💖 this one is spi_nor_read_any_reg and it's literally the glow-up function that reads any register at all from flash memory — nonvolatile or volatile, no cap. 👑

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🌸 SYNOPSIS 🌸

int spi_nor_read_any_reg (struct spi_nor *nor , struct spi_mem_op *op ,
enum spi_nor_protocol proto );

that's the whole vibe check right there 🫶

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🎀 ARGUMENTS 🎀

• nor — pointer to struct spi_nor. yes babe it's a pointer, it's giving main character energy 🦋
• op — the SPI memory operation. and listen, this is the important bit: op->data.buf must be DMA-able. not optional, not a suggestion, fr fr 💀
• proto — the SPI protocol you want to use for the register operation. pick your fighter ✨

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⭐ RETURN ⭐

zero on success, -errno otherwise 😭 so like… check it. please check it.

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🧚 SEE ALSO 🧚

this list is LONG and honestly iconic — everything lives in the kernel file ./drivers/mtd/spi-nor/core.c 📁 so go read these too:

• spi_nor_get_cmd_ext(9)
• spi_nor_spimem_setup_op(9)
• spi_nor_spimem_bounce(9)
• spi_nor_spimem_exec_op(9)
• spi_nor_spimem_read_data(9)
• spi_nor_read_data(9)
• spi_nor_spimem_write_data(9)
• spi_nor_write_data(9)
• spi_nor_write_any_volatile_reg(9)
• spi_nor_write_enable(9)
• spi_nor_write_disable(9)
• spi_nor_read_id(9)
• spi_nor_read_sr(9)
• spi_nor_read_cr(9)
• spi_nor_set_4byte_addr_mode_en4b_ex4b(9)
• spi_nor_set_4byte_addr_mode_wren_en4b_ex4b(9)
• spi_nor_set_4byte_addr_mode_brwr(9)
• spi_nor_sr_ready(9)
• spi_nor_use_parallel_locking(9)
• spi_nor_ready(9)
• spi_nor_wait_till_ready_with_timeout(9)
• spi_nor_wait_till_ready(9)
• spi_nor_global_block_unlock(9)
• spi_nor_write_sr(9)
• spi_nor_write_sr1_and_check(9)
• spi_nor_write_16bit_sr_and_check(9)
• spi_nor_write_16bit_cr_and_check(9)
• spi_nor_write_16bit_sr_cr_and_check(9)
• spi_nor_write_sr_and_check(9)
• spi_nor_write_sr_cr_and_check(9)
• spi_nor_write_sr2(9)
• spi_nor_read_sr2(9)
• spi_nor_erase_die(9)
• spi_nor_div_by_erase_size(9)
• spi_nor_find_best_erase_type(9)
• spi_nor_init_erase_cmd(9)
• spi_nor_destroy_erase_cmd_list(9)
• spi_nor_init_erase_cmd_list(9)
• spi_nor_erase_multi_sectors(9)
• spi_nor_sr1_bit6_quad_enable(9)
• spi_nor_sr2_bit1_quad_enable(9)
• spi_nor_sr2_bit7_quad_enable(9)
• spi_nor_spimem_check_read_pp_op(9)
• spi_nor_spimem_check_readop(9)
• spi_nor_spimem_check_pp(9)
• spi_nor_spimem_adjust_hwcaps(9)
• spi_nor_set_erase_type(9)
• spi_nor_mask_erase_type(9)
• spi_nor_init_uniform_erase_map(9)
• spi_nor_select_uniform_erase(9)
• spi_nor_manufacturer_init_params(9)
• spi_nor_no_sfdp_init_params(9)
• spi_nor_init_flags(9)
• spi_nor_init_fixup_flags(9)
• spi_nor_late_init_params(9)
• spi_nor_sfdp_init_params_deprecated(9)
• spi_nor_init_params_deprecated(9)
• spi_nor_init_default_params(9)
• spi_nor_init_params(9)
• spi_nor_quad_enable(9)
• spi_nor_set_4byte_addr_mode(9)
• spi_nor_soft_reset(9)

like… sixty whole functions. ate and left no crumbs 🍓

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anyway bestie that's the page 💜 this one ships from ./drivers/mtd/spi-nor, dated October 2026 — mwah, go read your flash registers responsibly 🧚‍♀️🌈✨