linux-kernel - [ 125/175] [media] mxl111sf: fix error on stream stop in mxl111sf_ep6_streaming

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Message-Id: <20120330194851.176240871@linuxfoundation.org>
Date:	Fri, 30 Mar 2012 12:50:30 -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, Michael Krufky <mkrufky@...uxtv.org>,
	Mauro Carvalho Chehab <mchehab@...hat.com>
Subject: [ 125/175] [media] mxl111sf: fix error on stream stop in mxl111sf_ep6_streaming_ctrl()

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

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

From: Michael Krufky <mkrufky@...uxtv.org>

commit 3be5bb71fbf18f83cb88b54a62a78e03e5a4f30a upstream.

Remove unnecessary register access in mxl111sf_ep6_streaming_ctrl()

This code breaks driver operation in kernel 3.3 and later, although
it works properly in 3.2  Disable register access to 0x12 for now.

Signed-off-by: Michael Krufky <mkrufky@...uxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/media/dvb/dvb-usb/mxl111sf.c |    6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

--- a/drivers/media/dvb/dvb-usb/mxl111sf.c
+++ b/drivers/media/dvb/dvb-usb/mxl111sf.c
@@ -351,15 +351,13 @@ static int mxl111sf_ep6_streaming_ctrl(s
 					      adap_state->ep6_clockphase,
 					      0, 0);
 		mxl_fail(ret);
+#if 0
 	} else {
 		ret = mxl111sf_disable_656_port(state);
 		mxl_fail(ret);
+#endif
 	}
 
-	mxl111sf_read_reg(state, 0x12, &tmp);
-	tmp &= ~0x04;
-	mxl111sf_write_reg(state, 0x12, tmp);
-
 	return ret;
 }
 


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