drm: xlnx: zynqmp_dpsub: Add missing check for dma_set_mask

[ Upstream commit 1832fba7f9780aff67c96ad30f397c2d76141833 ]

Add check for dma_set_mask() and return the error if it fails.

Fixes: d76271d22694 ("drm: xlnx: DRM/KMS driver for Xilinx ZynqMP DisplayPort Subsystem")
Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/gpu/drm/xlnx/zynqmp_dpsub.c b/drivers/gpu/drm/xlnx/zynqmp_dpsub.c
index bab862484d429c0b266694d6e72943de9db51f53..068413be6527507cdb1ce5b73b0f8ce2c1caa2ea 100644 (file)
--- a/drivers/gpu/drm/xlnx/zynqmp_dpsub.c
+++ b/drivers/gpu/drm/xlnx/zynqmp_dpsub.c
@@ -227,7 +227,9 @@ static int zynqmp_dpsub_probe(struct platform_device *pdev)
        dpsub->dev = &pdev->dev;
        platform_set_drvdata(pdev, dpsub);
 
-       dma_set_mask(dpsub->dev, DMA_BIT_MASK(ZYNQMP_DISP_MAX_DMA_BIT));
+       ret = dma_set_mask(dpsub->dev, DMA_BIT_MASK(ZYNQMP_DISP_MAX_DMA_BIT));
+       if (ret)
+               return ret;
 
        /* Try the reserved memory. Proceed if there's none. */
        of_reserved_mem_device_init(&pdev->dev);