linux-kernel - [PATCH 3.13.y-ckt 38/96] iio: Fix IIO_EVENT_CODE_EXTRACT

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Date:	Mon, 15 Dec 2014 11:25:58 -0800
From:	Kamal Mostafa <kamal@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Cristina Ciocan <cristina.ciocan@...el.com>,
	Jonathan Cameron <jic23@...nel.org>,
	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 3.13.y-ckt 38/96] iio: Fix IIO_EVENT_CODE_EXTRACT_DIR bit mask

3.13.11-ckt13 -stable review patch.  If anyone has any objections, please let me know.

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

From: Cristina Ciocan <cristina.ciocan@...el.com>

commit ccf54555da9a5e91e454b909ca6a5303c7d6b910 upstream.

The direction field is set on 7 bits, thus we need to AND it with 0111 111 mask
in order to retrieve it, that is 0x7F, not 0xCF as it is now.

Fixes: ade7ef7ba (staging:iio: Differential channel handling)
Signed-off-by: Cristina Ciocan <cristina.ciocan@...el.com>
Signed-off-by: Jonathan Cameron <jic23@...nel.org>
Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
 include/linux/iio/events.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/iio/events.h b/include/linux/iio/events.h
index 5dab2c4..c3ee817 100644
--- a/include/linux/iio/events.h
+++ b/include/linux/iio/events.h
@@ -76,7 +76,7 @@ struct iio_event_data {
 
 #define IIO_EVENT_CODE_EXTRACT_TYPE(mask) ((mask >> 56) & 0xFF)
 
-#define IIO_EVENT_CODE_EXTRACT_DIR(mask) ((mask >> 48) & 0xCF)
+#define IIO_EVENT_CODE_EXTRACT_DIR(mask) ((mask >> 48) & 0x7F)
 
 #define IIO_EVENT_CODE_EXTRACT_CHAN_TYPE(mask) ((mask >> 32) & 0xFF)
 
-- 
1.9.1

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