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libata: add @spd_limit to sata_down_spd_limit()

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Add @spd_limit to sata_down_spd_limit() so that the caller can specify
the SPD limit it wants.  This parameter doesn't get in the way even
when it's too low.  The closest possible limit is applied.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Tejun Heo
2009-01-29 20:31:33 +09:00
committed by Jeff Garzik
parent 99cf610aa4
commit a07d499b47
4 changed files with 27 additions and 12 deletions
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drivers/ata/libata.h
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@@ -99,7 +99,7 @@ extern int ata_dev_reread_id(struct ata_device *dev, unsigned int readid_flags);
extern int ata_dev_revalidate(struct ata_device *dev, unsigned int new_class,
unsigned int readid_flags);
extern int ata_dev_configure(struct ata_device *dev);
extern int sata_down_spd_limit(struct ata_link *link);
extern int sata_down_spd_limit(struct ata_link *link, u32 spd_limit);
extern int ata_down_xfermask_limit(struct ata_device *dev, unsigned int sel);
extern void ata_sg_clean(struct ata_queued_cmd *qc);
extern void ata_qc_free(struct ata_queued_cmd *qc);