From ae1b6b4c0a0c93a53cb897e54c84079a017cd9d0 Mon Sep 17 00:00:00 2001 From: Wolfram Sang Date: Mon, 6 May 2024 13:40:20 +0200 Subject: [PATCH] serial: sh-sci: simplify locking when re-issuing RXDMA fails Avoid a superfluous unlock/lock-pair by simply moving the printout to the end of bailing out. Signed-off-by: Wolfram Sang Link: https://lore.kernel.org/r/20240506114016.30498-10-wsa+renesas@sang-engineering.com Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/sh-sci.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index d31b3aca59878..f738980a8b2ca 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -1360,14 +1360,12 @@ static void sci_dma_rx_complete(void *arg) return; fail: - uart_port_unlock_irqrestore(port, flags); - dev_warn(port->dev, "Failed submitting Rx DMA descriptor\n"); /* Switch to PIO */ - uart_port_lock_irqsave(port, &flags); dmaengine_terminate_async(chan); sci_dma_rx_chan_invalidate(s); sci_dma_rx_reenable_irq(s); uart_port_unlock_irqrestore(port, flags); + dev_warn(port->dev, "Failed submitting Rx DMA descriptor\n"); } static void sci_dma_tx_release(struct sci_port *s) -- 2.30.2