Signed-off-by: Jingchang Lu <jingchang.lu@xxxxxxxxxxxxx>
---
drivers/dma/fsl-edma.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/dma/fsl-edma.c b/drivers/dma/fsl-edma.c
index b396a7f..24ab3d3 100644
--- a/drivers/dma/fsl-edma.c
+++ b/drivers/dma/fsl-edma.c
@@ -248,11 +248,12 @@ static void fsl_edma_chan_mux(struct fsl_edma_chan *fsl_chan,
unsigned int slot, bool enable)
{
u32 ch = fsl_chan->vchan.chan.chan_id;
- void __iomem *muxaddr = fsl_chan->edma->muxbase[ch / DMAMUX_NR];
+ void __iomem *muxaddr;
unsigned chans_per_mux, ch_off;
chans_per_mux = fsl_chan->edma->n_chans / DMAMUX_NR;
ch_off = fsl_chan->vchan.chan.chan_id % chans_per_mux;
+ muxaddr = fsl_chan->edma->muxbase[ch / chans_per_mux];
if (enable)
edma_writeb(fsl_chan->edma,
@@ -724,6 +725,7 @@ static struct dma_chan *fsl_edma_xlate(struct of_phandle_args *dma_spec,
{
struct fsl_edma_engine *fsl_edma = ofdma->of_dma_data;
struct dma_chan *chan, *_chan;
+ unsigned long chans_per_mux = fsl_edma->n_chans / DMAMUX_NR;
if (dma_spec->args_count != 2)
return NULL;
@@ -732,7 +734,7 @@ static struct dma_chan *fsl_edma_xlate(struct of_phandle_args *dma_spec,
list_for_each_entry_safe(chan, _chan, &fsl_edma->dma_dev.channels, device_node) {
if (chan->client_count)
continue;
- if ((chan->chan_id / DMAMUX_NR) == dma_spec->args[0]) {
+ if ((chan->chan_id / chans_per_mux) == dma_spec->args[0]) {
chan = dma_get_slave_channel(chan);
if (chan) {
chan->device->privatecnt++;
--
1.8.0
--
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