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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 4.18 118/131] ALSA: asihpi: Fix PCM format notations
Thread-Topic: [PATCH AUTOSEL 4.18 118/131] ALSA: asihpi: Fix PCM format
 notations
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Date:   Sun, 2 Sep 2018 13:05:30 +0000
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From: Takashi Iwai <tiwai@suse.de>

[ Upstream commit a91a0e774984aa57090c39dc3269a812417737ed ]

asihpi driver treats -1 as an own invalid PCM format, but this needs
a proper cast with __force prefix since PCM format type is __bitwise.
Define a constant with the proper type and use it allover.

This fixes sparse warnings like:
  sound/pci/asihpi/asihpi.c:315:9: warning: incorrect type in initializer (=
different base types)

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
---
 sound/pci/asihpi/asihpi.c | 24 +++++++++++++-----------
 1 file changed, 13 insertions(+), 11 deletions(-)

diff --git a/sound/pci/asihpi/asihpi.c b/sound/pci/asihpi/asihpi.c
index 64e0961f93ba..a31fe1550903 100644
--- a/sound/pci/asihpi/asihpi.c
+++ b/sound/pci/asihpi/asihpi.c
@@ -311,27 +311,29 @@ static void print_hwparams(struct snd_pcm_substream *=
substream,
 		snd_pcm_format_width(params_format(p)) / 8);
 }
=20
+#define INVALID_FORMAT	(__force snd_pcm_format_t)(-1)
+
 static snd_pcm_format_t hpi_to_alsa_formats[] =3D {
-	-1,			/* INVALID */
+	INVALID_FORMAT,		/* INVALID */
 	SNDRV_PCM_FORMAT_U8,	/* HPI_FORMAT_PCM8_UNSIGNED        1 */
 	SNDRV_PCM_FORMAT_S16,	/* HPI_FORMAT_PCM16_SIGNED         2 */
-	-1,			/* HPI_FORMAT_MPEG_L1              3 */
+	INVALID_FORMAT,		/* HPI_FORMAT_MPEG_L1              3 */
 	SNDRV_PCM_FORMAT_MPEG,	/* HPI_FORMAT_MPEG_L2              4 */
 	SNDRV_PCM_FORMAT_MPEG,	/* HPI_FORMAT_MPEG_L3              5 */
-	-1,			/* HPI_FORMAT_DOLBY_AC2            6 */
-	-1,			/* HPI_FORMAT_DOLBY_AC3            7 */
+	INVALID_FORMAT,		/* HPI_FORMAT_DOLBY_AC2            6 */
+	INVALID_FORMAT,		/* HPI_FORMAT_DOLBY_AC3            7 */
 	SNDRV_PCM_FORMAT_S16_BE,/* HPI_FORMAT_PCM16_BIGENDIAN      8 */
-	-1,			/* HPI_FORMAT_AA_TAGIT1_HITS       9 */
-	-1,			/* HPI_FORMAT_AA_TAGIT1_INSERTS   10 */
+	INVALID_FORMAT,		/* HPI_FORMAT_AA_TAGIT1_HITS       9 */
+	INVALID_FORMAT,		/* HPI_FORMAT_AA_TAGIT1_INSERTS   10 */
 	SNDRV_PCM_FORMAT_S32,	/* HPI_FORMAT_PCM32_SIGNED        11 */
-	-1,			/* HPI_FORMAT_RAW_BITSTREAM       12 */
-	-1,			/* HPI_FORMAT_AA_TAGIT1_HITS_EX1  13 */
+	INVALID_FORMAT,		/* HPI_FORMAT_RAW_BITSTREAM       12 */
+	INVALID_FORMAT,		/* HPI_FORMAT_AA_TAGIT1_HITS_EX1  13 */
 	SNDRV_PCM_FORMAT_FLOAT,	/* HPI_FORMAT_PCM32_FLOAT         14 */
 #if 1
 	/* ALSA can't handle 3 byte sample size together with power-of-2
 	 *  constraint on buffer_bytes, so disable this format
 	 */
-	-1
+	INVALID_FORMAT
 #else
 	/* SNDRV_PCM_FORMAT_S24_3LE */ /* HPI_FORMAT_PCM24_SIGNED 15 */
 #endif
@@ -1023,7 +1025,7 @@ static u64 snd_card_asihpi_playback_formats(struct sn=
d_card_asihpi *asihpi,
 					format, sample_rate, 128000, 0);
 		if (!err)
 			err =3D hpi_outstream_query_format(h_stream, &hpi_format);
-		if (!err && (hpi_to_alsa_formats[format] !=3D -1))
+		if (!err && (hpi_to_alsa_formats[format] !=3D INVALID_FORMAT))
 			formats |=3D pcm_format_to_bits(hpi_to_alsa_formats[format]);
 	}
 	return formats;
@@ -1205,7 +1207,7 @@ static u64 snd_card_asihpi_capture_formats(struct snd=
_card_asihpi *asihpi,
 					format, sample_rate, 128000, 0);
 		if (!err)
 			err =3D hpi_instream_query_format(h_stream, &hpi_format);
-		if (!err && (hpi_to_alsa_formats[format] !=3D -1))
+		if (!err && (hpi_to_alsa_formats[format] !=3D INVALID_FORMAT))
 			formats |=3D pcm_format_to_bits(hpi_to_alsa_formats[format]);
 	}
 	return formats;
--=20
2.17.1