linux-kernel - [PATCH] dma/fsldma : Unmap region obtained by of

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Message-Id: <1475059511-10114-1-git-send-email-arvind.yadav.cs@gmail.com>
Date:   Wed, 28 Sep 2016 16:15:11 +0530
From:   Arvind Yadav <arvind.yadav.cs@...il.com>
To:     leoli@...escale.com, zw@...kernel.org, vinod.koul@...el.com
Cc:     dan.j.williams@...el.com, linuxppc-dev@...ts.ozlabs.org,
        dmaengine@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] dma/fsldma : Unmap region obtained by of_iomap

Free memory mapping, if probe is not successful.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@...il.com>
---
 drivers/dma/fsldma.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/dma/fsldma.c b/drivers/dma/fsldma.c
index 911b717..7ba8944 100644
--- a/drivers/dma/fsldma.c
+++ b/drivers/dma/fsldma.c
@@ -1351,7 +1351,7 @@ static int fsldma_of_probe(struct platform_device *op)
 	if (!fdev->regs) {
 		dev_err(&op->dev, "unable to ioremap registers\n");
 		err = -ENOMEM;
-		goto out_free_fdev;
+		goto out_free;
 	}
 
 	/* map the channel IRQ if it exists, but don't hookup the handler yet */
@@ -1416,6 +1416,8 @@ static int fsldma_of_probe(struct platform_device *op)
 
 out_free_fdev:
 	irq_dispose_mapping(fdev->irq);
+	iounmap(fdev->regs);
+out_free:
 	kfree(fdev);
 out_return:
 	return err;
-- 
1.7.9.5