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authorTejun Heo <htejun@gmail.com>2008-04-07 09:47:18 -0400
committerJeff Garzik <jgarzik@redhat.com>2008-04-17 15:44:22 -0400
commit0aa1113d544226bc2c4a20d6ac1d71170512a361 (patch)
tree503b33b0805424d312abddd3535c941bb85c03bc /drivers/ata/ahci.c
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 'drivers/ata/ahci.c')
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