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| author | Tejun Heo <htejun@gmail.com> | 2005-08-07 14:53:40 +0900 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2005-08-10 13:34:58 -0400 |
| commit | fae009847c9ea3d668bbee21ce1d76764eca5039 (patch) | |
| tree | b0272cf5f64ce8e0e7ae15018e9318ac7b0ad732 /drivers/scsi/sata_sx4.c | |
| parent | 86b3786078d63242d3194ffc58ae8dae1d1bbef3 (diff) | |
| download | linux-fae009847c9ea3d668bbee21ce1d76764eca5039.tar.bz2 | |
[PATCH] sata: fix sata_sx4 dma_prep to not use sg->length
sata_sx4 directly references sg->length to calculate total_len in
pdc20621_dma_prep(). This is incorrect as dma_map_sg() could have
merged multiple sg's into one and, in such case, sg->length doesn't
reflect true size of the entry. This patch makes it use
sg_dma_len(sg).
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Diffstat (limited to 'drivers/scsi/sata_sx4.c')
| -rw-r--r-- | drivers/scsi/sata_sx4.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/scsi/sata_sx4.c b/drivers/scsi/sata_sx4.c index 140cea05de3f..efd7d7a61135 100644 --- a/drivers/scsi/sata_sx4.c +++ b/drivers/scsi/sata_sx4.c @@ -468,7 +468,7 @@ static void pdc20621_dma_prep(struct ata_queued_cmd *qc) for (i = 0; i < last; i++) { buf[idx++] = cpu_to_le32(sg_dma_address(&sg[i])); buf[idx++] = cpu_to_le32(sg_dma_len(&sg[i])); - total_len += sg[i].length; + total_len += sg_dma_len(&sg[i]); } buf[idx - 1] |= cpu_to_le32(ATA_PRD_EOT); sgt_len = idx * 4; |