From 5250c9694fa879532470d87ebf6a485be1124221 Mon Sep 17 00:00:00 2001
From: Richard Cochran <richardcochran@gmail.com>
Date: Fri, 2 Nov 2012 22:25:30 +0000
Subject: cpsw: fix leaking IO mappings

The CPSW driver remaps two different IO regions, but fails to unmap them
both. This patch fixes the issue by calling iounmap in the appropriate
places.

Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c
index 6215246..7654a62 100644
--- a/drivers/net/ethernet/ti/cpsw.c
+++ b/drivers/net/ethernet/ti/cpsw.c
@@ -1252,14 +1252,12 @@ static int __devinit cpsw_probe(struct platform_device *pdev)
 		ret = -ENOENT;
 		goto clean_clk_ret;
 	}
-
 	if (!request_mem_region(priv->cpsw_res->start,
 				resource_size(priv->cpsw_res), ndev->name)) {
 		dev_err(priv->dev, "failed request i/o region\n");
 		ret = -ENXIO;
 		goto clean_clk_ret;
 	}
-
 	regs = ioremap(priv->cpsw_res->start, resource_size(priv->cpsw_res));
 	if (!regs) {
 		dev_err(priv->dev, "unable to map i/o region\n");
@@ -1274,16 +1272,14 @@ static int __devinit cpsw_probe(struct platform_device *pdev)
 	if (!priv->cpsw_wr_res) {
 		dev_err(priv->dev, "error getting i/o resource\n");
 		ret = -ENOENT;
-		goto clean_clk_ret;
+		goto clean_iomap_ret;
 	}
-
 	if (!request_mem_region(priv->cpsw_wr_res->start,
 			resource_size(priv->cpsw_wr_res), ndev->name)) {
 		dev_err(priv->dev, "failed request i/o region\n");
 		ret = -ENXIO;
-		goto clean_clk_ret;
+		goto clean_iomap_ret;
 	}
-
 	regs = ioremap(priv->cpsw_wr_res->start,
 				resource_size(priv->cpsw_wr_res));
 	if (!regs) {
@@ -1326,7 +1322,7 @@ static int __devinit cpsw_probe(struct platform_device *pdev)
 	if (!priv->dma) {
 		dev_err(priv->dev, "error initializing dma\n");
 		ret = -ENOMEM;
-		goto clean_iomap_ret;
+		goto clean_wr_iomap_ret;
 	}
 
 	priv->txch = cpdma_chan_create(priv->dma, tx_chan_num(0),
@@ -1407,11 +1403,13 @@ clean_dma_ret:
 	cpdma_chan_destroy(priv->txch);
 	cpdma_chan_destroy(priv->rxch);
 	cpdma_ctlr_destroy(priv->dma);
-clean_iomap_ret:
-	iounmap(priv->regs);
+clean_wr_iomap_ret:
+	iounmap(priv->wr_regs);
 clean_cpsw_wr_iores_ret:
 	release_mem_region(priv->cpsw_wr_res->start,
 			   resource_size(priv->cpsw_wr_res));
+clean_iomap_ret:
+	iounmap(priv->regs);
 clean_cpsw_iores_ret:
 	release_mem_region(priv->cpsw_res->start,
 			   resource_size(priv->cpsw_res));
@@ -1442,6 +1440,7 @@ static int __devexit cpsw_remove(struct platform_device *pdev)
 	iounmap(priv->regs);
 	release_mem_region(priv->cpsw_res->start,
 			   resource_size(priv->cpsw_res));
+	iounmap(priv->wr_regs);
 	release_mem_region(priv->cpsw_wr_res->start,
 			   resource_size(priv->cpsw_wr_res));
 	pm_runtime_disable(&pdev->dev);
-- 
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