From f6718653361e8f8a6aac9946822aa2090edf4f37 Mon Sep 17 00:00:00 2001 From: Russell King Date: Mon, 8 Dec 2008 19:25:28 +0000 Subject: [PATCH] [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 --- drivers/ata/pata_icside.c | 13 +------------ 1 file changed, 1 insertion(+), 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 @@ -232,21 +229,13 @@ 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 */ -- GitLab