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authorTejun Heo <htejun@gmail.com>2008-04-07 22:47:18 +0900
committerJeff Garzik <jgarzik@redhat.com>2008-04-17 15:44:22 -0400
commit0aa1113d544226bc2c4a20d6ac1d71170512a361 (patch)
tree503b33b0805424d312abddd3535c941bb85c03bc /include/linux/libata.h
parent288623a06c652239d2f57d271af12bb024cf7218 (diff)
libata: separate out ata_std_prereset() from ata_sff_prereset()
Separate out generic ATA portion from ata_sff_prereset() into ata_std_prereset() and implement ata_sff_prereset() using the std version. Waiting for device readiness is the only SFF specific part. ata_base_port_ops now has ata_std_prereset() for its prereset and ata_sff_port_ops overrides it to ata_sff_prereset(). This change can affect pdc_adma, ahci, sata_fsl and sata_sil24. pdc_adma implements its own prereset using ata_sff_prereset() and the rest has hardreset and thus are unaffected by this change. This change reflects real world situation. There is no generic way to wait for device readiness for non-SFF controllers and some of them don't have any mechanism for that. Non-sff drivers which don't have hardreset should wrap ata_std_prereset() and wait for device readiness itself but there's no such driver now and isn't likely to be popular in the future either. Signed-off-by: Tejun Heo <htejun@gmail.com>
Diffstat (limited to 'include/linux/libata.h')
-rw-r--r--include/linux/libata.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 603712b59cf..595ede55fe4 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -824,6 +824,7 @@ static inline int ata_port_is_dummy(struct ata_port *ap)
extern void sata_print_link_status(struct ata_link *link);
extern void ata_port_probe(struct ata_port *);
extern int sata_set_spd(struct ata_link *link);
+extern int ata_std_prereset(struct ata_link *link, unsigned long deadline);
extern int sata_link_debounce(struct ata_link *link,
const unsigned long *params, unsigned long deadline);
extern int sata_link_resume(struct ata_link *link, const unsigned long *params,