diag210_get_dev_info(9)

💅 diag210_get_dev_info — Kernel API Manual ✨

okay bestie, welcome to the Kernel API Manual entry for diag210_get_dev_info 🎀 this one's short and sweet but it's lowkey doing main character work down in s390 land, so let's get into it 🦋

🌸 NAME 🌸

diag210_get_dev_info — grab device information via diag 0x210 ✨

🔥 SYNOPSIS 🔥

int diag210_get_dev_info (struct ccw_device *cdev );

💖 ARGUMENTS 💖

• cdev — ccw device 👑 (that's the channel-command-word device you're asking about, no cap)

✨ DESCRIPTION ✨

okay so here's the whole vibe: this function returns zero on success, and non-zero otherwise 💀 that's literally it, that's the tea 🍓

so like — check the return value, bestie, that's the entire assignment 🙈 zero means slay, anything else means not slay 🫶

🌈 SEE ALSO 🌈

• Kernel file ./drivers/s390/cio/device_id.c 🧚 (yes, the file, go look at it, iykyk)
• diag210_to_senseid(9)
• ccw_device_sense_id_start(9)

fr fr go read device_id.c if you wanna see how the sausage gets made — it's giving essential lore 💜

⭐ that's the whole page, bestie — brought to you by the fine folks in ./drivers/s390/cio, dated October 2026, and no i did not make that date up, it's literally right there 😭 periodt 💅