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authorTejun Heo <htejun@gmail.com>2005-08-07 09:53:40 +0400
committerJeff Garzik <jgarzik@pobox.com>2005-08-10 21:34:58 +0400
commitfae009847c9ea3d668bbee21ce1d76764eca5039 (patch)
treeb0272cf5f64ce8e0e7ae15018e9318ac7b0ad732 /drivers/scsi/sata_sx4.c
parent86b3786078d63242d3194ffc58ae8dae1d1bbef3 (diff)
downloadlinux-fae009847c9ea3d668bbee21ce1d76764eca5039.tar.xz
[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.c2
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;