zfcp_ccw_probe(9)

💅 zfcp_ccw_probe — the manual page, but make it make sense

okay so this is from the Kernel API Manual, section 9, and it's about zfcp_ccw_probe(9). yes that's a mouthful, we'll get through it together 🫶

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✨ NAME ✨

zfcp_ccw_probe — literally the probe function of the zfcp driver, that's it, that's the whole vibe 🌸

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🎀 SYNOPSIS 🎀

int zfcp_ccw_probe (struct ccw_device *cdev );

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🦋 ARGUMENTS 🦋

• cdev — pointer to the belonging ccw device 💖 (yes, "belonging", the kernel is possessive like that, we respect it)

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💅 DESCRIPTION 💅

okay bestie, here's the tea ☕ — this function gets called by the common i/o layer for each FCP device found on the current system. every single one. she's doing the rounds 👑

but here's the twist: this is only a stub to make cio work 🫠 like, she shows up, she says hi, she does not do the actual work yet.

why? because the goal is to only allocate adapter resources for devices that are actually used — no wasting resources on devices nobody's touching, that's so not sustainable 💀. so the allocation is deferred to the first call to ccw_set_online.

it's giving "i'll get ready when there's actually somewhere to go" energy. iconic, honestly. she's pacing herself 🧚

no cap: don't go looking for allocation logic in here, it's a stub, the real allocation happens later at the first ccw_set_online call. periodt.

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/s390/scsi/zfcp_ccw.c — the whole fam lives here 💜
• zfcp_ccw_activate(9)
• zfcp_ccw_remove(9)
• zfcp_ccw_set_online(9)
• zfcp_ccw_set_offline(9)
• zfcp_ccw_notify(9)
• zfcp_ccw_shutdown(9)

all the siblings!! go read them too, they're all in ./drivers/s390/scsi and they all ate 🔥

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and that's the whole page, bestie 🍓 this little drop came from ./drivers/s390/scsi, dated October 2026, and yes the page title is zfcp_ccw_probe(9) — same as the top, we came full circle ⭐ mwah 💋