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topology: Fix comparison of unsigned expression < 0

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Fix gcc warning: comparison of unsigned expression < 0 is always false
[-Wtype-limits]

The ABI object channel->id is _le32 and is converted to host unsigned
integer. It cannot be < 0.

Signed-off-by: Mengdong Lin <mengdong.lin@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Mengdong Lin 2015-11-18 02:23:59 -05:00 • committed by Takashi Iwai
parent 605551aec6
commit 8504a41d94
1 changed files with 4 additions and 2 deletions
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6
src/topology/channel.c
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@ -80,6 +80,7 @@ int tplg_parse_channel(snd_tplg_t *tplg,
snd_config_t *n;
struct snd_soc_tplg_channel *channel = private;
const char *id, *value;
int channel_id;
if (tplg->channel_idx >= SND_SOC_TPLG_MAX_CHAN)
return -EINVAL;
@ -88,12 +89,13 @@ int tplg_parse_channel(snd_tplg_t *tplg,
snd_config_get_id(cfg, &id);
tplg_dbg("\tChannel %s at index %d\n", id, tplg->channel_idx);
channel->id = lookup_channel(id);
if (channel->id < 0) {
channel_id = lookup_channel(id);
if (channel_id < 0) {
SNDERR("error: invalid channel %s\n", id);
return -EINVAL;
}
channel->id = channel_id;
channel->size = sizeof(*channel);
tplg_dbg("\tChan %s = %d\n", id, channel->id);