rsi_sdio_read_register(9)

🌸 NAME 🌸

okay so bestie 💖 welcome to the rsi_sdio_read_register(9) page from the Kernel API Manual! This function reads one byte of information from a register — one byte, that’s literally the whole mission. ✨

✨ SYNOPSIS ✨

int rsi_sdio_read_register (struct rsi_hw *adapter , u32 addr , u8 *data
       );

🎀 ARGUMENTS 🎀

• adapter — pointer to the adapter structure. she’s the main character context 🫶
• addr — address of the register. like the exact spot we’re visiting 💅
• data — pointer to the data that stores the data read. yes, the read data goes here, no cap 🍓

🔥 RETURN 🔥

• 0 on success — slay ✅
• -1 on failure — not slay 😭

🦋 SEE ALSO 🦋

Kernel file: ./drivers/net/wireless/rsi/rsi_91x_sdio.c

the whole squad, all (9) pages:

• rsi_sdio_set_cmd52_arg(9)
• rsi_cmd52writebyte(9)
• rsi_cmd52readbyte(9)
• rsi_issue_sdiocommand(9)
• rsi_handle_interrupt(9)
• rsi_reset_card(9)
• rsi_setclock(9)
• rsi_setblocklength(9)
• rsi_setupcard(9)
• rsi_sdio_write_register(9)
• rsi_sdio_ack_intr(9)
• rsi_sdio_read_register_multiple(9)
• rsi_sdio_write_register_multiple(9)
• rsi_sdio_host_intf_write_pkt(9)
• rsi_sdio_host_intf_read_pkt(9)
• rsi_init_sdio_interface(9)
• rsi_probe(9)
• rsi_disconnect(9)

okay love u bye 🫶 source/version: ./drivers/net/wireless/rsi • date: October 2026 ✨