rio_chk_dev_route(9)

💖 rio_chk_dev_route(9) 💖

okay bestie, you found the Kernel API Manual page for this one, and it's giving “let's validate a route” energy. no cap, it's a tiny page, but we're gonna treat every detail like it's main character. 💅

✨ NAME ✨

rio_chk_dev_route — Validate route to the specified device.

🌸 SYNOPSIS 🌸

int rio_chk_dev_route (struct rio_dev *rdev , struct rio_dev **nrdev ,
       int *npnum );

🎀 ARGUMENTS 🎀

• rdev — RIO device failed to respond. yeah, the one ghosting us 😭
• nrdev — Last active device on the route to rdev. the last one still in the group chat 🫶
• npnum — nrdev's port number on the route to rdev. literally the port number, bestie ✨

🦋 DESCRIPTION 🦋

okay so here's the vibe: it follows a route to the specified RIO device to determine the last available device (and corresponding RIO port) on the route. that's it, that's the plot. no extra lore, no secret side quests, just route validation realness. 💖

🔥 SEE ALSO 🔥

Kernel file ./drivers/rapidio/rio.c is the home base, and the whole linked crew is here — every single one, because we do not skip the squad. 🫶

• rio_local_get_device_id(9)
• rio_query_mport(9)
• rio_alloc_net(9)
• rio_local_set_device_id(9)
• rio_add_device(9)
• rio_request_inb_mbox(9)
• rio_release_inb_mbox(9)
• rio_request_outb_mbox(9)
• rio_release_outb_mbox(9)
• rio_setup_inb_dbell(9)
• rio_request_inb_dbell(9)
• rio_release_inb_dbell(9)
• rio_request_outb_dbell(9)
• rio_release_outb_dbell(9)
• rio_add_mport_pw_handler(9)
• rio_del_mport_pw_handler(9)
• rio_request_inb_pwrite(9)
• rio_release_inb_pwrite(9)
• rio_pw_enable(9)
• rio_map_inb_region(9)
• rio_unmap_inb_region(9)
• rio_map_outb_region(9)
• rio_unmap_outb_region(9)
• rio_mport_get_physefb(9)
• rio_get_comptag(9)
• rio_set_port_lockout(9)
• rio_enable_rx_tx_port(9)
• rio_mport_chk_dev_access(9)
• rio_chk_dev_access(9)
• rio_get_input_status(9)
• rio_clr_err_stopped(9)
• rio_inb_pwrite_handler(9)
• rio_mport_get_efb(9)
• rio_mport_get_feature(9)
• rio_std_route_add_entry(9)
• rio_std_route_get_entry(9)
• rio_std_route_clr_table(9)
• rio_lock_device(9)
• rio_unlock_device(9)
• rio_route_add_entry(9)
• rio_route_get_entry(9)
• rio_route_clr_table(9)
• rio_request_mport_dma(9)
• rio_release_dma(9)
• rio_dma_prep_xfer(9)
• rio_register_scan(9)
• rio_mport_scan(9)

okay that's the whole page, bestie — source ./drivers/rapidio, date October 2026, page rio_chk_dev_route(9). byeee, stay validated 🫶💖