From 85bdcf03b79bb35b98fce26d8dd064cc1165917a Mon Sep 17 00:00:00 2001
From: Vignesh Raghavendra <vigneshr@ti.com>
Date: Thu, 17 Sep 2020 20:11:22 +0530
Subject: [PATCH] dma: ti: k3-udma: Reset the channel during release
Reset the channel completely during channel release in order to clear
teardown bit before handing over to next user or jumping to Linux.
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>
---
drivers/dma/ti/k3-udma.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c
index 57d9fbfabb..94216045cc 100644
--- a/drivers/dma/ti/k3-udma.c
+++ b/drivers/dma/ti/k3-udma.c
@@ -1134,7 +1134,9 @@ err_free_res:
static void udma_free_chan_resources(struct udma_chan *uc)
{
- /* Some configuration to UDMA-P channel: disable, reset, whatever */
+ /* Hard reset UDMA channel */
+ udma_stop_hard(uc);
+ udma_reset_counters(uc);
/* Release PSI-L pairing */
udma_navss_psil_unpair(uc->ud, uc->config.src_thread, uc->config.dst_thread);
--
2.39.5