From: Fugang Duan Date: Wed, 17 Jul 2019 05:19:26 +0000 (+0800) Subject: tty: serial: fsl_lpuart: remove the dev.coherent_dma_mask zero setting X-Git-Tag: v5.4-rc1~135^2~114 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=38eb523461dc89543070ef41512ea134bba07284;p=linux.git tty: serial: fsl_lpuart: remove the dev.coherent_dma_mask zero setting By default, .of_dma_configure() init dev.coherent_dma_mask to BIT(32) that match the eDMA address range. If re-init dev.coherent_dma_mask to zero, then streaming dma mapping will go swiotlb dma_map, if swiotlb is not initalized then it causes mapping failed. Signed-off-by: Fugang Duan Link: https://lore.kernel.org/r/20190717051930.15514-2-fugang.duan@nxp.com Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c index 92dad2b4ec36..b856d1dba49b 100644 --- a/drivers/tty/serial/fsl_lpuart.c +++ b/drivers/tty/serial/fsl_lpuart.c @@ -2320,8 +2320,6 @@ static int lpuart_probe(struct platform_device *pdev) if (!sport) return -ENOMEM; - pdev->dev.coherent_dma_mask = 0; - ret = of_alias_get_id(np, "serial"); if (ret < 0) { ret = ida_simple_get(&fsl_lpuart_ida, 0, UART_NR, GFP_KERNEL);