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| author | Jeff Garzik <jgarzik@pobox.com> | 2005-10-18 22:14:54 -0400 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2005-10-18 22:14:54 -0400 |
| commit | 972c26bdd6b58e7534473c4f7928584578cf43f4 (patch) | |
| tree | e32f940cf913ee80ac7ae5e3d92d53f90a6b6552 /include/linux/libata.h | |
| parent | b194b4250c2b7e9d762823ac6045316fcd4bf4f9 (diff) | |
| download | op-kernel-dev-972c26bdd6b58e7534473c4f7928584578cf43f4.zip op-kernel-dev-972c26bdd6b58e7534473c4f7928584578cf43f4.tar.gz | |
libata: add ata_sg_is_last() helper, use it in several drivers
Diffstat (limited to 'include/linux/libata.h')
| -rw-r--r-- | include/linux/libata.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/libata.h b/include/linux/libata.h index d3f58a7..d3dfefe 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -480,6 +480,18 @@ extern int pci_test_config_bits(struct pci_dev *pdev, struct pci_bits *bits); #endif /* CONFIG_PCI */ +static inline int +ata_sg_is_last(struct scatterlist *sg, struct ata_queued_cmd *qc) +{ + if (sg == &qc->pad_sgent) + return 1; + if (qc->pad_len) + return 0; + if (((sg - qc->__sg) + 1) == qc->n_elem) + return 1; + return 0; +} + static inline struct scatterlist * ata_qc_next_sg(struct scatterlist *sg, struct ata_queued_cmd *qc) { |
