fsl_rio_port_write_handler(9)

💅 fsl_rio_port_write_handler(9) 💅

okay so bestie, welcome to the Kernel API Manual ✨ we’re doing a vibe check on fsl_rio_port_write_handler, aka the MPC85xx port write interrupt handler. no cap, she’s the main character of this page. 💖

🌸 NAME 🌸

fsl_rio_port_write_handler — MPC85xx port write interrupt handler

🎀 SYNOPSIS 🎀

irqreturn_t fsl_rio_port_write_handler (int irq , void *dev_instance );

✨ ARGUMENTS ✨

• irq — Linux interrupt number. literally the interrupt number, bestie 🦋
• dev_instance — pointer to interrupt-specific data. that’s the interrupt-specific data pointer, periodt 🎀

💫 DESCRIPTION 💫

okay so what’s her job? She handles port write interrupts, fr fr. Then she parses a list of registered port write event handlers and executes a matching event handler. that’s the tea ☕ — matching handler gets run, and that’s the whole description. 💅

🌈 SEE ALSO 🌈

the kernel file is ./arch/powerpc/sysdev/fsl_rmu.c — iykyk — and these are the references in her orbit, all of them, no skipping:

• fsl_rio_tx_handler(9)
• fsl_rio_rx_handler(9)
• fsl_rio_dbell_handler(9)
• fsl_rio_pw_enable(9)
• fsl_rio_port_write_init(9)
• fsl_rio_doorbell_send(9)
• fsl_add_outb_message(9)
• fsl_open_outb_mbox(9)
• fsl_close_outb_mbox(9)
• fsl_open_inb_mbox(9)
• fsl_close_inb_mbox(9)
• fsl_add_inb_buffer(9)
• fsl_get_inb_message(9)
• fsl_rio_doorbell_init(9)

mwah 💋 cute sign-off time: the source/version is ./arch/powerpc/sysdev, and the date is October 2026. that’s the footer, bestie, and she ate. 🫶💖