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libata: allocate ap separately from shost

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Don't embed ap inside shost.  Allocate it separately and point it back
from shosts's hostdata.  This makes port allocation more flexible and
allows regular ATA and SAS share host alloc/init paths.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo 2007-04-17 23:44:06 +09:00 • committed by Jeff Garzik
commit 4911487a34
2 changed files with 15 additions and 6 deletions
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include/linux/libata.h
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@ -1231,7 +1231,7 @@ static inline void ata_pad_free(struct ata_port *ap, struct device *dev)
static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host)
{
return (struct ata_port *) &host->hostdata[0];
return *(struct ata_port **)&host->hostdata[0];
}
#endif /* __LINUX_LIBATA_H__ */