diff options
Diffstat (limited to 'sound/firewire/bebob/bebob_stream.c')
| -rw-r--r-- | sound/firewire/bebob/bebob_stream.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/sound/firewire/bebob/bebob_stream.c b/sound/firewire/bebob/bebob_stream.c index ef4d0c9f657..1aab0a32870 100644 --- a/sound/firewire/bebob/bebob_stream.c +++ b/sound/firewire/bebob/bebob_stream.c @@ -129,12 +129,24 @@ snd_bebob_stream_check_internal_clock(struct snd_bebob *bebob, bool *internal) /* 1.The device has its own operation to switch source of clock */ if (clk_spec) { err = clk_spec->get(bebob, &id); - if (err < 0) + if (err < 0) { dev_err(&bebob->unit->device, "fail to get clock source: %d\n", err); - else if (strncmp(clk_spec->labels[id], SND_BEBOB_CLOCK_INTERNAL, - strlen(SND_BEBOB_CLOCK_INTERNAL)) == 0) + goto end; + } + + if (id >= clk_spec->num) { + dev_err(&bebob->unit->device, + "clock source %d out of range 0..%d\n", + id, clk_spec->num - 1); + err = -EIO; + goto end; + } + + if (strncmp(clk_spec->labels[id], SND_BEBOB_CLOCK_INTERNAL, + strlen(SND_BEBOB_CLOCK_INTERNAL)) == 0) *internal = true; + goto end; } |