MLK-14498-10 dma: imx-sdma: fix wrong chn_real_count in cyclic mode

The sdmac->chn_real_count is equal to sdmac->period_len in dma cyclic
mode that is not correct, correct it to real count in current BD transfer.

Signed-off-by: Fugang Duan <fugang.duan@nxp.com>

diff --git a/drivers/dma/imx-sdma.c b/drivers/dma/imx-sdma.c
index 140c234..d8c8bad 100644 (file)
--- a/drivers/dma/imx-sdma.c
+++ b/drivers/dma/imx-sdma.c
@@ -774,12 +774,6 @@ static void sdma_update_channel_loop(struct sdma_channel *sdmac)
                desc->buf_ptail = desc->buf_tail;
                desc->buf_tail = (desc->buf_tail + 1) % desc->num_bd;
 
-               if (sdmac->peripheral_type == IMX_DMATYPE_UART) {
-                       /* restore mode.count after counter readed */
-                       sdmac->chn_real_count = bd->mode.count;
-                       bd->mode.count = sdmac->chn_count;
-               }
-
                if (error)
                        sdmac->status = old_status;
                /*