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-rw-r--r--drivers/tty/serial/imx.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index c6c3b160dac7..cadf7e5848b2 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -532,7 +532,7 @@ static void dma_tx_work(struct work_struct *w)
return;
}
- if (xmit->tail > xmit->head) {
+ if (xmit->tail > xmit->head && xmit->head > 0) {
sport->dma_tx_nents = 2;
sg_init_table(sgl, 2);
sg_set_buf(sgl, xmit->buf + xmit->tail,