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[PATCH] sparc32: add offset in pci_map_sg()

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Add sg->offset to sg->dvma_address in pci_map_sg() on sparc32.  Without the
offset, transfers to buffers that do not begin on a page boundary will not
work as expected.

Signed-off-by: Jan Andersson <jan.andersson@ieee.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: William Lee Irwin III <wli@holomorphy.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jan Andersson
2006-12-29 16:50:04 -08:00
committed by Linus Torvalds
parent 8018c27b26
commit dbc1333a34
1 changed files with 2 additions and 1 deletions
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3
arch/sparc/kernel/ioport.c
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@@ -726,7 +726,8 @@ int pci_map_sg(struct pci_dev *hwdev, struct scatterlist *sg, int nents,
/* IIep is write-through, not flushing. */ /* IIep is write-through, not flushing. */
for (n = 0; n < nents; n++) { for (n = 0; n < nents; n++) {
BUG_ON(page_address(sg->page) == NULL); BUG_ON(page_address(sg->page) == NULL);
sg->dvma_address = virt_to_phys(page_address(sg->page)); sg->dvma_address =
virt_to_phys(page_address(sg->page)) + sg->offset;
sg->dvma_length = sg->length; sg->dvma_length = sg->length;
sg++; sg++;
} }