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mmc: sdhi: DMA slave ID 0 is invalid

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Don't try to allocate DMA resources if the platform didn't specify
positive DMA slave IDs.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Guennadi Liakhovetski 2011-05-24 12:24:07 +02:00 committed by Chris Ball
parent 7d8b4c2a4b
commit 3e713373ce
1 changed files with 1 additions and 1 deletions
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2
drivers/mmc/host/sh_mobile_sdhi.c
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@ -92,7 +92,7 @@ static int __devinit sh_mobile_sdhi_probe(struct platform_device *pdev)
mmc_data->ocr_mask = p->tmio_ocr_mask;
mmc_data->capabilities |= p->tmio_caps;
if (p->dma_slave_tx >= 0 && p->dma_slave_rx >= 0) {
if (p->dma_slave_tx > 0 && p->dma_slave_rx > 0) {
priv->param_tx.slave_id = p->dma_slave_tx;
priv->param_rx.slave_id = p->dma_slave_rx;
priv->dma_priv.chan_priv_tx = &priv->param_tx;