linux-kernel - [PATCH 3.16 223/294] ASoC: adau1977: Fix truncation warning on 64 bit architectures

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Date:   Mon, 06 Nov 2017 23:03:02 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org, "Mark Brown" <broonie@...aro.org>,
        "Arnd Bergmann" <arnd@...db.de>,
        "Lars-Peter Clausen" <lars@...afoo.de>
Subject: [PATCH 3.16 223/294] ASoC: adau1977: Fix truncation warning on 64
 bit architectures

3.16.50-rc1 review patch.  If anyone has any objections, please let me know.

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

From: Mark Brown <broonie@...aro.org>

commit d8df26bb57d2a86365de46a5421b97417401e39a upstream.

Negating ADAU1977_BLOCK_POWER_SAI_LDO_EN creates an unsigned long constant
with all bits set which on 64 bit architectures needs to be truncated to
an unsigned int, generating a warning. Add an explicit cast since we know
this is OK.

Signed-off-by: Mark Brown <broonie@...aro.org>
Acked-by: Lars-Peter Clausen <lars@...afoo.de>
Signed-off-by: Arnd Bergmann <arnd@...db.de>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 sound/soc/codecs/adau1977.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/sound/soc/codecs/adau1977.c
+++ b/sound/soc/codecs/adau1977.c
@@ -968,7 +968,7 @@ int adau1977_probe(struct device *dev, s
 	if (adau1977->dvdd_reg)
 		power_off_mask = ~0;
 	else
-		power_off_mask = ~ADAU1977_BLOCK_POWER_SAI_LDO_EN;
+		power_off_mask = (unsigned int)~ADAU1977_BLOCK_POWER_SAI_LDO_EN;
 
 	ret = regmap_update_bits(adau1977->regmap, ADAU1977_REG_BLOCK_POWER_SAI,
 				power_off_mask, 0x00);