tty: serial: sh-sci: Fix sleeping in atomic context

Fix sleeping in atomic context warning as reported by the Smatch static
checker tool by replacing disable_irq->disable_irq_nosync.

Reported by: Dan Carpenter <dan.carpenter@linaro.org>

Fixes: 8749061be196 ("tty: serial: sh-sci: Add RZ/G2L SCIFA DMA tx support")
Cc: stable@kernel.org
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20230704154818.406913-1-biju.das.jz@bp.renesas.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index 7c94579..8b7a42e 100644 (file)
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -590,7 +590,7 @@ static void sci_start_tx(struct uart_port *port)
            dma_submit_error(s->cookie_tx)) {
                if (s->cfg->regtype == SCIx_RZ_SCIFA_REGTYPE)
                        /* Switch irq from SCIF to DMA */
-                       disable_irq(s->irqs[SCIx_TXI_IRQ]);
+                       disable_irq_nosync(s->irqs[SCIx_TXI_IRQ]);
 
                s->cookie_tx = 0;
                schedule_work(&s->work_tx);