linux-kernel - [PATCH ] /drivers/ata ioremap returncode check

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Date:	Mon, 13 Aug 2007 20:31:33 -0700 (PDT)
From:	Scott Thompson <postfailathushmaildotcom@...oo.com>
To:	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
	postfail@...hmail.com
Subject: [PATCH ] /drivers/ata ioremap returncode check

patchset against 2.6.23-rc3.  corrects missing ioremap return checks.

Warning -- cleanup handler here may miss additional required cleanup as has occurred on other
portions of ioremap audit.

This patch had been submitted previously but hushmail client caused wordwrap issues, resending
with different mail client.

Signed-off-by: Scott Thompson <postfail <at> hushmail.com>
----------------------------------------------------------

diff --git a/drivers/ata/pata_ixp4xx_cf.c b/drivers/ata/pata_ixp4xx_cf.c
index 4ca7fd6..eaebc4d 100644
--- a/drivers/ata/pata_ixp4xx_cf.c
+++ b/drivers/ata/pata_ixp4xx_cf.c
@@ -189,6 +189,14 @@ static __devinit int ixp4xx_pata_probe(struct platform_device *pdev)
 	data->cs0 = devm_ioremap(&pdev->dev, cs0->start, 0x1000);
 	data->cs1 = devm_ioremap(&pdev->dev, cs1->start, 0x1000);
 
+	if (!data->cs0 || !data->cs1) {
+		if (data->cs0)
+			iounmap(data->cs0);
+		if (data->cs1)
+			iounmap(data->cs1);
+		return -ENOMEM;
+	}
+
 	irq = platform_get_irq(pdev, 0);
 	if (irq)
 		set_irq_type(irq, IRQT_RISING);


       
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