ALSA: pcm_format_to_bits strong-typed conversion

Add a function to handle conversion from snd_pcm_format_t
to bitwise with proper typing.

Change such conversions to use this function and silence sparse
warnings.

Signed-off-by: Eldad Zack <eldad@fogrefinery.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 3 insertions, 2 deletions

diff --git a/sound/usb/format.c b/sound/usb/format.c
index 020ede0259eb..99299ffb33ac 100644
--- a/sound/usb/format.c
+++ b/sound/usb/format.c
@@ -365,7 +365,8 @@ static int parse_audio_format_i(struct snd_usb_audio *chip,
 {
         struct usb_interface_descriptor *altsd = get_iface_desc(iface);
         int protocol = altsd->bInterfaceProtocol;
-        int pcm_format, ret;
+        snd_pcm_format_t pcm_format;
+        int ret;
 
         if (fmt->bFormatType == UAC_FORMAT_TYPE_III) {
                 /* FIXME: the format type is really IECxxx
@@ -384,7 +385,7 @@ static int parse_audio_format_i(struct snd_usb_audio *chip,
                 default:
                         pcm_format = SNDRV_PCM_FORMAT_S16_LE;
                 }
-                fp->formats = 1uLL << pcm_format;
+                fp->formats = pcm_format_to_bits(pcm_format);
         } else {
                 fp->formats = parse_audio_format_i_type(chip, fp, format,
                                                         fmt, protocol);