ALSA: asihpi: fix sign bug

bytes_per_sec is unsigned, so if snd_pcm_format_width() return error we
would not see it.

Signed-off-by: Kulikov Vasiliy <segooon@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 4 insertions, 2 deletions

diff --git a/sound/pci/asihpi/asihpi.c b/sound/pci/asihpi/asihpi.c
index 91218f77217f..c80b0b863c54 100644
--- a/sound/pci/asihpi/asihpi.c
+++ b/sound/pci/asihpi/asihpi.c
@@ -460,6 +460,7 @@ static int snd_card_asihpi_pcm_hw_params(struct snd_pcm_substream *substream,
         struct snd_card_asihpi *card = snd_pcm_substream_chip(substream);
         int err;
         u16 format;
+        int width;
         unsigned int bytes_per_sec;
 
         print_hwparams(params);
@@ -512,9 +513,10 @@ static int snd_card_asihpi_pcm_hw_params(struct snd_pcm_substream *substream,
                                 dpcm->hpi_buffer_attached);
         }
         bytes_per_sec = params_rate(params) * params_channels(params);
-        bytes_per_sec *= snd_pcm_format_width(params_format(params));
+        width = snd_pcm_format_width(params_format(params));
+        bytes_per_sec *= width;
         bytes_per_sec /= 8;
-        if (bytes_per_sec <= 0)
+        if (width < 0 || bytes_per_sec == 0)
                 return -EINVAL;
 
         dpcm->bytes_per_sec = bytes_per_sec;