linux-kernel - [PATCH 5 of 5 resend ] /drivers/char/watchdog ioremap balancing/ returncode check

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Date:	Wed, 22 Aug 2007 20:33:10 -0700 (PDT)
From:	Scott Thompson <postfailathushmaildotcom@...oo.com>
To:	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [PATCH 5 of 5 resend ] /drivers/char/watchdog ioremap balancing/ returncode check

patchset against 2.6.23-rc3.  
corrects missing ioremap return checks and balancing on iounmap calls, integrated changes per list
recommendations on the original set of patches..

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/char/watchdog/iTCO_wdt.c b/drivers/char/watchdog/iTCO_wdt.c
index cd5a565..f87cac7 100644
--- a/drivers/char/watchdog/iTCO_wdt.c
+++ b/drivers/char/watchdog/iTCO_wdt.c
@@ -621,6 +621,12 @@ static int iTCO_wdt_init(struct pci_dev *pdev,
 		pci_read_config_dword(pdev, 0xf0, &base_address);
 		RCBA = base_address & 0xffffc000;
 		iTCO_wdt_private.gcs = ioremap((RCBA + 0x3410),4);
+		if (!iTCO_wdt_private.gcs) {
+			printk(KERN_ERR PFX "failed to ioremap\n");
+			ret = -ENOMEM;
+			goto out;
+		}
+
 	}

 	/* Check chipset's NO_REBOOT bit */

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