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libata: Add helper ata_shost_to_port()

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This commit is contained in:
Jeff Garzik 2006-04-11 13:12:34 -04:00
parent 381544bba3
commit 35bb94b116
5 changed files with 15 additions and 9 deletions
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6
include/linux/libata.h
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@ -33,6 +33,7 @@
#include <asm/io.h>
#include <linux/ata.h>
#include <linux/workqueue.h>
#include <scsi/scsi_host.h>
/*
* compile-time options: to be removed as soon as all the drivers are
@ -977,4 +978,9 @@ static inline void ata_pad_free(struct ata_port *ap, struct device *dev)
dma_free_coherent(dev, ATA_DMA_PAD_BUF_SZ, ap->pad, ap->pad_dma);
}
static inline struct ata_port *ata_shost_to_port(struct Scsi_Host *host)
{
return (struct ata_port *) &host->hostdata[0];
}
#endif /* __LINUX_LIBATA_H__ */