From: Axel Lin <axel.lin@ingics.com>
Date: Fri, 10 Jul 2015 14:13:19 +0000 (+0800)
Subject: dmaengine: ti-dma-crossbar: Fix checking return value of devm_ioremap_resource
X-Git-Tag: firefly_0821_release~176^2~1143^2~14^2
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=28eb232f217583e7bece8e9d6b26cf55a694ceae;p=firefly-linux-kernel-4.4.55.git

dmaengine: ti-dma-crossbar: Fix checking return value of devm_ioremap_resource

devm_ioremap_resource returns ERR_PTR on failure.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
---

diff --git a/drivers/dma/ti-dma-crossbar.c b/drivers/dma/ti-dma-crossbar.c
index 10487d91e60d..5cce8c9d0026 100644
--- a/drivers/dma/ti-dma-crossbar.c
+++ b/drivers/dma/ti-dma-crossbar.c
@@ -162,12 +162,9 @@ static int ti_dma_xbar_probe(struct platform_device *pdev)
 		xbar->safe_val = (u16)safe_val;
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res)
-		return -ENODEV;
-
 	iomem = devm_ioremap_resource(&pdev->dev, res);
-	if (!iomem)
-		return -ENOMEM;
+	if (IS_ERR(iomem))
+		return PTR_ERR(iomem);
 
 	xbar->iomem = iomem;