diff mbox series

[08/13] serial: stm32: fix tx dma completion, release channel

Message ID 20210219174736.1022-9-erwan.leray@foss.st.com (mailing list archive)
State New, archived
Headers show
Series stm32 usart various fixes | expand

Commit Message

Erwan LE RAY Feb. 19, 2021, 5:47 p.m. UTC 
This patch add a proper release of dma channels when completing dma tx.

Fixes: 3489187204eb ("serial: stm32: adding dma support")
Signed-off-by: Erwan Le Ray <erwan.leray@foss.st.com>
diff mbox series

Patch

diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c
index 4ba164820904..7da16d468b84 100644
--- a/drivers/tty/serial/stm32-usart.c
+++ b/drivers/tty/serial/stm32-usart.c
@@ -292,6 +292,7 @@  static void stm32_usart_tx_dma_complete(void *arg)
 	struct stm32_port *stm32port = to_stm32_port(port);
 	struct stm32_usart_offsets *ofs = &stm32port->info->ofs;
 
+	dmaengine_terminate_async(stm32port->tx_ch);
 	stm32_usart_clr_bits(port, ofs->cr3, USART_CR3_DMAT);
 	stm32port->tx_dma_busy = false;