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From:   Sasha Levin <Alexander.Levin@microsoft.com>
To:     "stable@vger.kernel.org" <stable@vger.kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
CC:     Takashi Iwai <tiwai@suse.de>,
        Sasha Levin <Alexander.Levin@microsoft.com>
Subject: [PATCH AUTOSEL 4.18 116/131] ALSA: xen: Use standard
 pcm_format_to_bits() for ALSA format bits
Thread-Topic: [PATCH AUTOSEL 4.18 116/131] ALSA: xen: Use standard
 pcm_format_to_bits() for ALSA format bits
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Date:   Sun, 2 Sep 2018 13:05:27 +0000
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From: Takashi Iwai <tiwai@suse.de>

[ Upstream commit 3ac14b3960185d4c8a2f14b84042aa1aa8531d88 ]

The open codes with the bit shift in xen_snd_front_alsa.c give sparse
warnings as the PCM format type is with __bitwise.
There is already a standard macro to get the format bits, so let's use
it instead.

This fixes sparse warnings like:
  sound/xen/xen_snd_front_alsa.c:191:47: warning: restricted snd_pcm_format=
_t degrades to integer

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
---
 sound/xen/xen_snd_front_alsa.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/xen/xen_snd_front_alsa.c b/sound/xen/xen_snd_front_alsa.=
c
index 5a2bd70a2fa1..129180e17db1 100644
--- a/sound/xen/xen_snd_front_alsa.c
+++ b/sound/xen/xen_snd_front_alsa.c
@@ -188,7 +188,7 @@ static u64 to_sndif_formats_mask(u64 alsa_formats)
=20
 	mask =3D 0;
 	for (i =3D 0; i < ARRAY_SIZE(ALSA_SNDIF_FORMATS); i++)
-		if (1 << ALSA_SNDIF_FORMATS[i].alsa & alsa_formats)
+		if (pcm_format_to_bits(ALSA_SNDIF_FORMATS[i].alsa) & alsa_formats)
 			mask |=3D 1 << ALSA_SNDIF_FORMATS[i].sndif;
=20
 	return mask;
@@ -202,7 +202,7 @@ static u64 to_alsa_formats_mask(u64 sndif_formats)
 	mask =3D 0;
 	for (i =3D 0; i < ARRAY_SIZE(ALSA_SNDIF_FORMATS); i++)
 		if (1 << ALSA_SNDIF_FORMATS[i].sndif & sndif_formats)
-			mask |=3D 1 << ALSA_SNDIF_FORMATS[i].alsa;
+			mask |=3D pcm_format_to_bits(ALSA_SNDIF_FORMATS[i].alsa);
=20
 	return mask;
 }
--=20
2.17.1