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| author |   Russell King <rmk@dyn-67.arm.linux.org.uk> | 2008-12-08 19:25:28 +0000 |
|---|---|---|
| committer |   Russell King <rmk+kernel@arm.linux.org.uk> | 2008-12-11 14:52:44 +0000 |
| commit | f6718653361e8f8a6aac9946822aa2090edf4f37 (patch) | |
| tree | 884f9ec31d7c6c33ffaa443bb01c03fdff7292f9 /drivers/ata/pata_icside.c | |
| parent | [ARM] dma: convert IOMD DMA to use sg_next() (diff) | |
| download | linux-dev-f6718653361e8f8a6aac9946822aa2090edf4f37.tar.xz linux-dev-f6718653361e8f8a6aac9946822aa2090edf4f37.zip | |
[ARM] dma: pata_icside's contiguous sg array is now redundant
Now that the IOMD DMA code walks the scatterlist using sg_next,
converting the sg list into a contiguous list is no longer required.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'drivers/ata/pata_icside.c')
| -rw-r--r-- | drivers/ata/pata_icside.c | 13 |
1 files changed, 1 insertions, 12 deletions
diff --git a/drivers/ata/pata_icside.c b/drivers/ata/pata_icside.c index cf9e9848f8b5..63121f45ba25 100644 --- a/drivers/ata/pata_icside.c +++ b/drivers/ata/pata_icside.c @@ -57,7 +57,6 @@ struct pata_icside_state { u8 disabled; unsigned int speed[ATA_MAX_DEVICES]; } port[2]; - struct scatterlist sg[PATA_ICSIDE_MAX_SG]; }; struct pata_icside_info { @@ -222,9 +221,7 @@ static void pata_icside_bmdma_setup(struct ata_queued_cmd *qc) { struct ata_port *ap = qc->ap; struct pata_icside_state *state = ap->host->private_data; - struct scatterlist *sg, *rsg = state->sg; unsigned int write = qc->tf.flags & ATA_TFLAG_WRITE; - unsigned int si; /* * We are simplex; BUG if we try to fiddle with DMA @@ -233,20 +230,12 @@ static void pata_icside_bmdma_setup(struct ata_queued_cmd *qc) BUG_ON(dma_channel_active(state->dma)); /* - * Copy ATAs scattered sg list into a contiguous array of sg - */ - for_each_sg(qc->sg, sg, qc->n_elem, si) { - memcpy(rsg, sg, sizeof(*sg)); - rsg++; - } - - /* * Route the DMA signals to the correct interface */ writeb(state->port[ap->port_no].port_sel, state->ioc_base); set_dma_speed(state->dma, state->port[ap->port_no].speed[qc->dev->devno]); - set_dma_sg(state->dma, state->sg, rsg - state->sg); + set_dma_sg(state->dma, qc->sg, qc->n_elem); set_dma_mode(state->dma, write ? DMA_MODE_WRITE : DMA_MODE_READ); /* issue r/w command */ |