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audio_hw: Prevent referencing input devices from empty list

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Fixes audioserver crash in in_get_capture_position() if PCM input
device was not properly opened.

Signed-off-by: Vasyl Gello <vasek.gello@gmail.com>
Change-Id: I2f2d9bc8151cf61af112a9544268513effacacb5
This commit is contained in:
Vasyl Gello 2018-07-01 10:57:35 +03:00 committed by Jan Altensen
parent 884938a258
commit d758a17389
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GPG key ID: 3E45BB95F7AD33DA
1 changed files with 10 additions and 0 deletions
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10
audio/audio_hw.c
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@ -1181,6 +1181,11 @@ static int32_t update_echo_reference(struct stream_in *in, size_t frames)
b.delay_ns = 0;
struct pcm_device *pcm_device;
if (list_empty(&in->pcm_dev_list)) {
ALOGW("%s: pcm device list empty", __func__);
return b.delay_ns;
}
pcm_device = node_to_item(list_head(&in->pcm_dev_list),
struct pcm_device, stream_list_node);
@ -3485,6 +3490,11 @@ static int in_get_capture_position(const struct audio_stream_in *stream,
struct pcm_device *pcm_device;
int ret = -ENOSYS;
if (list_empty(&in->pcm_dev_list)) {
ALOGW("%s: pcm device list empty", __func__);
return -ENODEV;
}
pcm_device = node_to_item(list_head(&in->pcm_dev_list),
struct pcm_device, stream_list_node);