linux-kernel - [PATCH] usb: ehci-s5p: fix: Fix null pointer dereferencing

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Date:	Tue, 09 Apr 2013 14:51:52 +0530
From:	Vivek Gautam <gautam.vivek@...sung.com>
To:	linux-usb@...r.kernel.org, linux-samsung-soc@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, gregkh@...uxfoundation.org,
	stern@...land.harvard.edu, kgene.kim@...sung.com,
	Manjunath Goudar <manjunath.goudar@...aro.org>,
	Arnd Bergmann <arnd@...db.de>, Jingoo Han <jg1.han@...sung.com>
Subject: [PATCH] usb: ehci-s5p: fix: Fix null pointer dereferencing

7edb3da makes ehci-s5p as a separate driver. But,
it raised an issue with its driver data.
Now that 's5p_ehci_hcd' doesn't maintain pointer to 'usb_hcd'
and s5p_ehci is nothing but a pointer to hcd->priv;
add hcd to the driver data rather than s5p_ehci.

This fixes issues with null pointer dereferencing in
s5p_ehci_shutdown(), s5p_ehci_suspend(), s5p_ehci_resume().

Signed-off-by: Vivek Gautam <gautam.vivek@...sung.com>
CC: Manjunath Goudar <manjunath.goudar@...aro.org>
CC: Arnd Bergmann <arnd@...db.de>
CC: Jingoo Han <jg1.han@...sung.com>
---
 drivers/usb/host/ehci-s5p.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/usb/host/ehci-s5p.c b/drivers/usb/host/ehci-s5p.c
index d8cb0ca..580548a 100644
--- a/drivers/usb/host/ehci-s5p.c
+++ b/drivers/usb/host/ehci-s5p.c
@@ -173,7 +173,7 @@ static int s5p_ehci_probe(struct platform_device *pdev)
 		goto fail_add_hcd;
 	}
 
-	platform_set_drvdata(pdev, s5p_ehci);
+	platform_set_drvdata(pdev, hcd);
 
 	return 0;
 
-- 
1.7.6.5

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