@@ -235,6 +235,8 @@ static void mxs_dma_reset_chan(struct mxs_dma_chan *mxs_chan)
writel(1 << (chan_id + BP_APBHX_CHANNEL_CTRL_RESET_CHANNEL),
mxs_dma->base + HW_APBHX_CHANNEL_CTRL + STMP_OFFSET_REG_SET);
}
+
+ mxs_chan->status = DMA_SUCCESS;
}
static void mxs_dma_enable_chan(struct mxs_dma_chan *mxs_chan)
@@ -362,7 +364,7 @@ static irqreturn_t mxs_dma_int_handler(int irq, void *dev_id)
chan);
mxs_chan->status = DMA_ERROR;
mxs_dma_reset_chan(mxs_chan);
- } else {
+ } else if (mxs_chan->status != DMA_SUCCESS) {
if (mxs_chan->flags & MXS_DMA_SG_LOOP)
mxs_chan->status = DMA_IN_PROGRESS;
else
After a channel reset, the channel stops running automatically. The state update was missing so that a channel perperation right after a channel reset failed. Signed-off-by: Markus Pargmann <mpa@pengutronix.de> --- drivers/dma/mxs-dma.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)