linux-kernel - [PATCH] usb:phy: propagate __of_usb_find

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Message-Id: <1416498816-3292-1-git-send-email-arjun024@gmail.com>
Date:	Thu, 20 Nov 2014 21:23:36 +0530
From:	Arjun Sreedharan <arjun024@...il.com>
To:	Felipe Balbi <balbi@...com>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] usb:phy: propagate __of_usb_find_phy()'s error on failure

When __of_usb_find_phy() fails, it returns -ENODEV - its
error code has to be returned by devm_usb_get_phy_by_phandle().
Only when the former function succeeds and try_module_get()
fails should -EPROBE_DEFER be returned.

Signed-off-by: Arjun Sreedharan <arjun024@...il.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 045cd30..0310112 100644
--- a/drivers/usb/phy/phy.c
+++ b/drivers/usb/phy/phy.c
@@ -191,7 +191,9 @@ struct usb_phy *devm_usb_get_phy_by_phandle(struct device *dev,
 
 	phy = __of_usb_find_phy(node);
 	if (IS_ERR(phy) || !try_module_get(phy->dev->driver->owner)) {
-		phy = ERR_PTR(-EPROBE_DEFER);
+		if (!IS_ERR(phy))
+			phy = ERR_PTR(-EPROBE_DEFER);
+		
 		devres_free(ptr);
 		goto err1;
 	}
-- 
1.7.11.7

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