FAILED: patch "[PATCH] dmaengine: sh: rcar-dmac: Check for error num after" failed to apply to 4.19-stable tree

The patch below does not apply to the 4.19-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From da2ad87fba0891576aadda9161b8505fde81a84d Mon Sep 17 00:00:00 2001
From: Jiasheng Jiang <[email protected]>
Date: Tue, 11 Jan 2022 09:12:39 +0800
Subject: [PATCH] dmaengine: sh: rcar-dmac: Check for error num after
dma_set_max_seg_size

As the possible failure of the dma_set_max_seg_size(), it should be better to check the return value of the dma_set_max_seg_size().

index 4a34ddd9c1c6..13d12d660cc2 100644
@@ -1868,7 +1868,10 @@ static int rcar_dmac_probe(struct platform_device *pdev)
 
 	dmac->dev = &pdev->dev;
 	platform_set_drvdata(pdev, dmac);
-	dma_set_max_seg_size(dmac->dev, RCAR_DMATCR_MASK);
+	ret = dma_set_max_seg_size(dmac->dev, RCAR_DMATCR_MASK);
+	if (ret)
+		return ret;
+
 	ret = dma_set_mask_and_coherent(dmac->dev, DMA_BIT_MASK(40));
 	if (ret)
 		return ret;