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Setting the DMA mask and coherent DMA mask to 32-bit ensures proper memory addressing during DMA operations Signed-off-by: Daniel Hellstrom Signed-off-by: Arun Muthusamy --- drivers/net/can/grcan.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/net/can/grcan.c b/drivers/net/can/grcan.c index c9175a6a013f..6e0a393785e8 100644 --- a/drivers/net/can/grcan.c +++ b/drivers/net/can/grcan.c @@ -1746,6 +1746,13 @@ static int grcan_probe(struct platform_device *ofdev) goto exit_error; } + /* On 64-bit systems.. GRCAN and GRCANFD can only address 32-bit */ + err = dma_set_mask_and_coherent(&ofdev->dev, DMA_BIT_MASK(32)); + if (err) { + dev_err_probe(&ofdev->dev, err, "No usable DMA configuration.\n"); + goto exit_error; + } + irq = irq_of_parse_and_map(np, GRCAN_IRQIX_IRQ); if (!irq) { dev_err(&ofdev->dev, "no irq found\n"); -- 2.51.0