linux-kernel - [PATCH] x86: kernel: olpc-xo1: fix error handling code

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Message-Id: <1287327106-9111-1-git-send-email-segooon@gmail.com>
Date:	Sun, 17 Oct 2010 18:51:46 +0400
From:	Vasiliy Kulikov <segooon@...il.com>
To:	kernel-janitors@...r.kernel.org
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
	Daniel Drake <dsd@...top.org>, linux-kernel@...r.kernel.org
Subject: [PATCH] x86: kernel: olpc-xo1: fix error handling code

If anything failed during initialization then setup_bases() should
call pci_disable_device().  Also reference got from pci_get_device()
should be freed with pci_dev_put().

Signed-off-by: Vasiliy Kulikov <segooon@...il.com>
---
 arch/x86/kernel/olpc-xo1.c |   12 +++++++++---
 1 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/arch/x86/kernel/olpc-xo1.c b/arch/x86/kernel/olpc-xo1.c
index f5442c0..05331cf 100644
--- a/arch/x86/kernel/olpc-xo1.c
+++ b/arch/x86/kernel/olpc-xo1.c
@@ -71,20 +71,25 @@ static int __devinit setup_bases(struct pci_dev *pdev)
 	r = pci_request_region(pdev, ACPI_BAR, DRV_NAME);
 	if (r) {
 		dev_err(&pdev->dev, "can't alloc PCI BAR #%d\n", ACPI_BAR);
-		return r;
+		goto err_disable;
 	}
 
 	r = pci_request_region(pdev, PMS_BAR, DRV_NAME);
 	if (r) {
 		dev_err(&pdev->dev, "can't alloc PCI BAR #%d\n", PMS_BAR);
-		pci_release_region(pdev, ACPI_BAR);
-		return r;
+		goto err_region1;
 	}
 
 	acpi_base = pci_resource_start(pdev, ACPI_BAR);
 	pms_base = pci_resource_start(pdev, PMS_BAR);
 
 	return 0;
+
+err_region1:
+	pci_release_region(pdev, ACPI_BAR);
+err_disable:
+	pci_disable_device(pdev);
+	return r;
 }
 
 static int __devinit olpc_xo1_probe(struct platform_device *pdev)
@@ -98,6 +103,7 @@ static int __devinit olpc_xo1_probe(struct platform_device *pdev)
 		return -ENODEV;
 
 	r = setup_bases(pcidev);
+	pci_dev_put(pcidev);
 	if (r)
 		return r;
 
-- 
1.7.0.4

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