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audio: add lock for resampler [1/1]

Browse Source 
PD#SWPL-8134

Problem:
kernel NULL pointer for aml_resample_enable

Solution:
add lock for resampler

Verify:
Need stress test for x301

Change-Id: I1bbf5d7aeab681399c93f0cba9cc59195d3be0d6
Signed-off-by: Shuai Li <shuai.li@amlogic.com>
This commit is contained in:
Shuai Li
2019-05-06 19:13:08 +08:00
committed by Tao Zeng
parent 41143ad093
commit 32dd894674
1 changed files with 8 additions and 0 deletions
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8
sound/soc/amlogic/auge/ddr_mngr.c
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@@ -655,8 +655,13 @@ void aml_set_resample(enum resample_idx id,
p_attach_resample->id = id; p_attach_resample->id = id;
p_attach_resample->attach_module = resample_module; p_attach_resample->attach_module = resample_module;
mutex_lock(&ddr_mutex);
to = fetch_toddr_by_src( to = fetch_toddr_by_src(
p_attach_resample->attach_module); p_attach_resample->attach_module);
if (to == NULL) {
pr_info("%s(), toddr NULL\n", __func__);
goto exit;
}
if (enable) { if (enable) {
if ((p_attach_resample->status == DISABLED) if ((p_attach_resample->status == DISABLED)
@@ -679,6 +684,9 @@ void aml_set_resample(enum resample_idx id,
if (update_running && to) if (update_running && to)
aml_resample_enable(to, p_attach_resample, enable); aml_resample_enable(to, p_attach_resample, enable);
exit:
mutex_unlock(&ddr_mutex);
} }
/* /*