On Thu, May 27, 2021 at 11:15:36AM +0200, Erwan Le Ray wrote: > Reset Rx and Tx dma buffers during probe to avoid freeing > invalid buffer in no dma mode. > > Signed-off-by: Erwan Le Ray <erwan.leray@xxxxxxxxxxx> > > 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 > Is this a bugfix? if so, what commit does this fix and does it need to be backported anywhere? thanks, greg k-h
