linux-kernel - [PATCH 4.1 051/267] iio:light:cm3323: clear bitmask before set

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Date:	Fri, 31 Jul 2015 12:38:22 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Hartmut Knaack <knaack.h@....de>,
	Jonathan Cameron <jic23@...nel.org>
Subject: [PATCH 4.1 051/267] iio:light:cm3323: clear bitmask before set

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

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

From: Hartmut Knaack <knaack.h@....de>

commit c288503b32e8c5534062a05ec565d28bffa06db3 upstream.

When setting the bits for integration time, the appropriate bitmask needs
to be cleared first.

Signed-off-by: Hartmut Knaack <knaack.h@....de>
Signed-off-by: Jonathan Cameron <jic23@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/iio/light/cm3323.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/iio/light/cm3323.c
+++ b/drivers/iio/light/cm3323.c
@@ -123,7 +123,7 @@ static int cm3323_set_it_bits(struct cm3
 	for (i = 0; i < ARRAY_SIZE(cm3323_int_time); i++) {
 		if (val == cm3323_int_time[i].val &&
 		    val2 == cm3323_int_time[i].val2) {
-			reg_conf = data->reg_conf;
+			reg_conf = data->reg_conf & ~CM3323_CONF_IT_MASK;
 			reg_conf |= i << CM3323_CONF_IT_SHIFT;
 
 			ret = i2c_smbus_write_word_data(data->client,


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