diff options
| author | Fugang Duan <fugang.duan@nxp.com> | 2019-07-17 07:19:26 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-09-04 12:43:44 +0200 |
| commit | 38eb523461dc89543070ef41512ea134bba07284 (patch) | |
| tree | 4d449b01e4dc4e2434c4418edf8efcdafbf0155b /drivers/tty/serial | |
| parent | serial: 8250_exar: Use struct_size() helper (diff) | |
| download | linux-38eb523461dc89543070ef41512ea134bba07284.tar.xz linux-38eb523461dc89543070ef41512ea134bba07284.zip | |
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 <fugang.duan@nxp.com>
Link: https://lore.kernel.org/r/20190717051930.15514-2-fugang.duan@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial')
| -rw-r--r-- | drivers/tty/serial/fsl_lpuart.c | 2 |
1 files changed, 0 insertions, 2 deletions
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); |