[PATCH 1/2] serial: stm32: reset dma buffers during probe
From: Erwan Le Ray <hidden>
Date: 2021-05-27 09:16:11
Also in:
linux-serial, lkml
Subsystem:
the rest, tty layer and serial drivers · Maintainers:
Linus Torvalds, Greg Kroah-Hartman, Jiri Slaby
Reset Rx and Tx dma buffers during probe to avoid freeing invalid buffer in no dma mode. Signed-off-by: Erwan Le Ray <redacted>
diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c
index c2ae7b392b86..2ac3b30477a7 100644
--- a/drivers/tty/serial/stm32-usart.c
+++ b/drivers/tty/serial/stm32-usart.c@@ -1168,6 +1168,8 @@ static struct stm32_port *stm32_usart_of_get_port(struct platform_device *pdev) stm32_ports[id].cr1_irq = USART_CR1_RXNEIE; stm32_ports[id].cr3_irq = 0; stm32_ports[id].last_res = RX_BUF_L; + stm32_ports[id].rx_dma_buf = 0; + stm32_ports[id].tx_dma_buf = 0; return &stm32_ports[id]; }
--
2.17.1
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