[PATCH 08/13] serial: stm32: fix tx dma completion, release channel
From: Erwan Le Ray <hidden>
Date: 2021-02-19 17:52:18
Also in:
linux-arm-kernel, lkml
Subsystem:
the rest, tty layer and serial drivers · Maintainers:
Linus Torvalds, Greg Kroah-Hartman, Jiri Slaby
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 <redacted>
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;
--
2.17.1