linux-kernel - [ 45/62] usb: musb: omap: fix crash when musb glue (omap) gets initialized

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Message-Id: <20120424223245.832510907@linuxfoundation.org>
Date:	Tue, 24 Apr 2012 15:33:26 -0700
From:	Greg KH <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, Kishon Vijay Abraham I <kishon@...com>,
	Felipe Balbi <balbi@...com>
Subject: [ 45/62] usb: musb: omap: fix crash when musb glue (omap) gets initialized

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

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

From: Kishon Vijay Abraham I <kishon@...com>

commit 3006dc8c627d738693e910c159630e4368c9e86c upstream.

pm_runtime_enable is being called after omap2430_musb_init. Hence
pm_runtime_get_sync in omap2430_musb_init does not have any effect (does
not enable clocks) resulting in a crash during register access. It is
fixed here.

Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
Signed-off-by: Felipe Balbi <balbi@...com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/usb/musb/omap2430.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/usb/musb/omap2430.c
+++ b/drivers/usb/musb/omap2430.c
@@ -451,14 +451,14 @@ static int __init omap2430_probe(struct
 		goto err2;
 	}
 
+	pm_runtime_enable(&pdev->dev);
+
 	ret = platform_device_add(musb);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to register musb device\n");
 		goto err2;
 	}
 
-	pm_runtime_enable(&pdev->dev);
-
 	return 0;
 
 err2:


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