linux-kernel - [PATCH 3.13.y-ckt 12/95] usb: phy: Find the right match in devm_usb_phy

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Message-Id: <1432753243-16151-13-git-send-email-kamal@canonical.com>
Date:	Wed, 27 May 2015 11:59:20 -0700
From:	Kamal Mostafa <kamal@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Axel Lin <axel.lin@...ics.com>, Felipe Balbi <balbi@...com>,
	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 3.13.y-ckt 12/95] usb: phy: Find the right match in devm_usb_phy_match

3.13.11-ckt21 -stable review patch.  If anyone has any objections, please let me know.

------------------

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

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: Kamal Mostafa <kamal@...onical.com>
---
 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 1b74523..19f0ba9 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;
 }
 
 /**
-- 
1.9.1

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