mmc: sdhi: DMA slave ID 0 is invalid · tjh.dev/kernel@3e71337

Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

kernel os linux

mmc: sdhi: DMA slave ID 0 is invalid

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>

authored by

Guennadi Liakhovetski and committed by

Chris Ball 15 years ago 3e713373 7d8b4c2a

+1 -1

1 changed file

expand all

drivers

mmc

host

sh_mobile_sdhi.c

+1 -1

drivers/mmc/host/sh_mobile_sdhi.c

··· 92 92 mmc_data->ocr_mask = p->tmio_ocr_mask; 93 93 mmc_data->capabilities |= p->tmio_caps; 94 94 95 - if (p->dma_slave_tx >= 0 && p->dma_slave_rx >= 0) { 95 + if (p->dma_slave_tx > 0 && p->dma_slave_rx > 0) { 96 96 priv->param_tx.slave_id = p->dma_slave_tx; 97 97 priv->param_rx.slave_id = p->dma_slave_rx; 98 98 priv->dma_priv.chan_priv_tx = &priv->param_tx;