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authorZhang Qilong <zhangqilong3@huawei.com>2020-11-02 15:34:33 +0100
committerBjorn Andersson <bjorn.andersson@linaro.org>2020-12-10 20:23:14 +0100
commita24723050037303e4008b37f1f8dcc99c58901aa (patch)
treed585b7e966b08dace7a9ecd894e7e275c07ac2f6 /drivers/remoteproc/qcom_q6v5_mss.c
parentremoteproc/mtk_scp: surround DT device IDs with CONFIG_OF (diff)
downloadlinux-a24723050037303e4008b37f1f8dcc99c58901aa.tar.xz
linux-a24723050037303e4008b37f1f8dcc99c58901aa.zip
remoteproc: q6v5-mss: fix error handling in q6v5_pds_enable
If the pm_runtime_get_sync failed in q6v5_pds_enable when loop (i), The unroll_pd_votes will start from (i - 1), and it will resulted in following problems: 1) pm_runtime_get_sync will increment pm usage counter even it failed. Forgetting to pm_runtime_put_noidle will result in reference leak. 2) Have not reset pds[i] performance state. Then we fix it. Fixes: 4760a896be88e ("remoteproc: q6v5-mss: Vote for rpmh power domains") Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com> Link: https://lore.kernel.org/r/20201102143433.143996-1-zhangqilong3@huawei.com Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Diffstat (limited to 'drivers/remoteproc/qcom_q6v5_mss.c')
-rw-r--r--drivers/remoteproc/qcom_q6v5_mss.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/remoteproc/qcom_q6v5_mss.c b/drivers/remoteproc/qcom_q6v5_mss.c
index a156a2a2a18d..66106ba25ba3 100644
--- a/drivers/remoteproc/qcom_q6v5_mss.c
+++ b/drivers/remoteproc/qcom_q6v5_mss.c
@@ -351,8 +351,11 @@ static int q6v5_pds_enable(struct q6v5 *qproc, struct device **pds,
for (i = 0; i < pd_count; i++) {
dev_pm_genpd_set_performance_state(pds[i], INT_MAX);
ret = pm_runtime_get_sync(pds[i]);
- if (ret < 0)
+ if (ret < 0) {
+ pm_runtime_put_noidle(pds[i]);
+ dev_pm_genpd_set_performance_state(pds[i], 0);
goto unroll_pd_votes;
+ }
}
return 0;