dma_port_flash_read(9)

💖 dma_port_flash_read(9) 💖

okay so bestie, this is the Kernel API Manual page for dma_port_flash_read(9) — no cap, it's the guide to reading from the active flash region. ✨

🌸 NAME 🌸

dma_port_flash_read — read from active flash region.

✨ SYNOPSIS ✨

int dma_port_flash_read (struct tb_dma_port *dma , unsigned int address , void *buf , size_t size );

🎀 ARGUMENTS 🎀

• dma — DMA control port. this is the port you're passing in, bestie. 💅
• address — address relative to the start of active region. relative to the start of active region, periodt.
• buf — buffer where the data is read. the place the read data goes, iykyk. 🫶
• size — size of the buffer. size of the buffer, exactly.

💖 RETURN 💖

0 on success, negative errno otherwise. that's the whole vibe check: 0 = slay, negative errno = not slay. 😭

🦋 SEE ALSO 🦋

bestie, go peek at the kernel file ./drivers/thunderbolt/dma_port.c, and say hi to this whole crew:

• struct tb_dma_port(9)
• dma_port_alloc(9)
• dma_port_free(9)
• dma_port_flash_write(9)
• dma_port_flash_update_auth(9)
• dma_port_flash_update_auth_status(9)
• dma_port_power_cycle(9)

xoxo, source/version ./drivers/thunderbolt, date October 2026, page dma_port_flash_read(9) 💅✨