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libata: kill qc->nsect and cursect

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libata used two separate sets of variables to record request size and
current offset for ATA and ATAPI.  This is confusing and fragile.
This patch replaces qc->nsect/cursect with qc->nbytes/curbytes and
kills them.  Also, ata_pio_sector() is updated to use bytes for
qc->cursg_ofs instead of sectors.  The field used to be used in bytes
for ATAPI and in sectors for ATA.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo
2007-01-03 17:30:39 +09:00
committed by Jeff Garzik
parent 16454445e1
commit 726f0785b6
6 changed files with 13 additions and 25 deletions
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6
include/linux/libata.h
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@@ -427,9 +427,6 @@ struct ata_queued_cmd {
unsigned int pad_len;
unsigned int nsect;
unsigned int cursect;
unsigned int nbytes;
unsigned int curbytes;
@@ -1145,8 +1142,7 @@ static inline void ata_qc_reinit(struct ata_queued_cmd *qc)
qc->dma_dir = DMA_NONE;
qc->__sg = NULL;
qc->flags = 0;
qc->cursect = qc->cursg = qc->cursg_ofs = 0;
qc->nsect = 0;
qc->cursg = qc->cursg_ofs = 0;
qc->nbytes = qc->curbytes = 0;
qc->n_elem = 0;
qc->err_mask = 0;