spi_nor_read_sr(9)

💅 spi_nor_read_sr(9) — the Kernel API Manual, bestie edition

okay so this whole page lives in the Kernel API Manual, and it's all about one little function called spi_nor_read_sr — yes it's giving "read the Status Register" and yes it's iconic. buckle up 🎀

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✨ NAME ✨

spi_nor_read_sr — Read the Status Register.

like, that's literally it. that's the whole job. go read that register, queen 💖

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🌸 SYNOPSIS 🌸

int spi_nor_read_sr (struct spi_nor *nor , u8 *sr );

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🦋 ARGUMENTS 🦋

• nor — pointer to struct spi_nor. that's your SPI NOR buddy, you just hand it over bestie 🫶
• sr — pointer to a DMA-able buffer where the value of the Status Register will be written. should be at least 2 bytes — do not skimp on this, the buffer gotta have room, no cap 🌈

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👑 RETURN 👑

0 on success, -errno otherwise.

so like — zero means slay, anything else means something went sideways and you get an errno telling you what 💀 keep an eye on it fr fr.

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⭐ SEE ALSO ⭐

all the related lore lives in the kernel file ./drivers/mtd/spi-nor/core.c, and the squad is huge — here's everyone, in order, no one left behind 💜

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_read_any_reg(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_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)

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and that's the whole page, bestie — go read that Status Register 💅✨

this cutie came from ./drivers/mtd/spi-nor and it's dated October 2026, filed under spi_nor_read_sr(9). mwah, bye 🎀💖