sata_scr_valid(9)

✨ sata_scr_valid(9) ✨

okay so bestie, we're in the Kernel API Manual today and the star of the show is sata_scr_valid — literally the vibe check for whether your SCRs are even accessible. let's get into it 💅

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🌸 NAME 🌸

sata_scr_valid — test whether SCRs are accessible

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🎀 SYNOPSIS 🎀

int sata_scr_valid (struct ata_link *link );

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🦋 ARGUMENTS 🦋

• link — the ATA link you're testing SCR accessibility for. that's the one, that's the subject of the investigation 🔍

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💖 DESCRIPTION 💖

So what does it do? it tests whether SCRs are accessible for link. that's it, that's the whole gig. no cap ✨

LOCKING: None. zero locks, none needed, we are unbothered, we are free 🕊️

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🌈 RETURN 🌈

• 1 — SCRs are accessible, slay, we're so back 👑
• 0 — nope, not accessible, it's giving "no" 💀

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🔥 SEE ALSO 🔥

where do you even find this masterpiece? kernel file ./drivers/ata/libata-sata.c — and honestly the whole friend group is iconic, go say hi:

• sata_scr_read(9)
• sata_scr_write(9)
• sata_scr_write_flush(9)
• ata_tf_to_fis(9)
• ata_tf_from_fis(9)
• sata_link_debounce(9)
• sata_link_resume(9)
• sata_link_scr_lpm(9)
• sata_set_spd_needed(9)
• sata_set_spd(9)
• sata_down_spd_limit(9)
• sata_link_hardreset(9)
• sata_std_hardreset(9)
• ata_qc_complete_multiple(9)
• ata_slave_link_init(9)
• sata_lpm_ignore_phy_events(9)
• ata_ncq_prio_supported(9)
• ata_ncq_prio_enabled(9)
• ata_ncq_prio_enable(9)
• ata_change_queue_depth(9)
• ata_scsi_change_queue_depth(9)
• ata_sas_sdev_configure(9)
• ata_sas_queuecmd(9)
• sata_async_notification(9)
• ata_eh_read_log_10h(9)
• ata_eh_get_ncq_success_sense(9)
• ata_eh_analyze_ncq_error(9)

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🫶 that's the whole page bestie, go test your links, stay accessible, drink water 💜

okay and before you close the tab — this whole thing lives in ./drivers/ata and it's dated October 2026, and yes the page name is still sata_scr_valid(9) because main character energy never changes 🎀✨