linux-kernel - [PATCH 3.12 028/142] usb: phy: Find the right match in devm_usb_phy

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Date:	Sat, 16 May 2015 09:36:28 +0200
From:	Jiri Slaby <jslaby@...e.cz>
To:	stable@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, Axel Lin <axel.lin@...ics.com>,
	Felipe Balbi <balbi@...com>, Jiri Slaby <jslaby@...e.cz>
Subject: [PATCH 3.12 028/142] usb: phy: Find the right match in devm_usb_phy_match

From: Axel Lin <axel.lin@...ics.com>

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

commit 869aee0f31429fa9d94d5aef539602b73ae0cf4b upstream.

The res parameter passed to devm_usb_phy_match() is the location where the
pointer to the usb_phy is stored, hence it needs to be dereferenced before
comparing to the match data in order to find the correct match.

Fixes: 410219dcd2ba ("usb: otg: utils: devres: Add API's to associate a device with the phy")
Signed-off-by: Axel Lin <axel.lin@...ics.com>
Signed-off-by: Felipe Balbi <balbi@...com>
Signed-off-by: Jiri Slaby <jslaby@...e.cz>
---
 drivers/usb/phy/phy.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/phy/phy.c b/drivers/usb/phy/phy.c
index 5d7966b8fe98..4fee0cce3dce 100644
--- a/drivers/usb/phy/phy.c
+++ b/drivers/usb/phy/phy.c
@@ -78,7 +78,9 @@ static void devm_usb_phy_release(struct device *dev, void *res)
 
 static int devm_usb_phy_match(struct device *dev, void *res, void *match_data)
 {
-	return res == match_data;
+	struct usb_phy **phy = res;
+
+	return *phy == match_data;
 }
 
 /**
-- 
2.3.7

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