The return value of dma_set_coherent_mask() is not always 0. To catch the exception in case that dma is not support the mask.
Fixes: a1d2a6339961 ("drm/lima: driver for ARM Mali4xx GPUs") Signed-off-by: Jiasheng Jiang jiasheng@iscas.ac.cn --- drivers/gpu/drm/lima/lima_device.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/lima/lima_device.c b/drivers/gpu/drm/lima/lima_device.c index 65fdca366e41..75e9a2060b47 100644 --- a/drivers/gpu/drm/lima/lima_device.c +++ b/drivers/gpu/drm/lima/lima_device.c @@ -356,7 +356,9 @@ int lima_device_init(struct lima_device *ldev) struct platform_device *pdev = to_platform_device(ldev->dev); int err, i;
- dma_set_coherent_mask(ldev->dev, DMA_BIT_MASK(32)); + err = dma_set_coherent_mask(ldev->dev, DMA_BIT_MASK(32)); + if (err) + return err;
err = lima_clk_init(ldev); if (err)