| Message ID | 20201102143433.143996-1-zhangqilong3@huawei.com (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | a24723050037303e4008b37f1f8dcc99c58901aa |
| Headers | show |
| Series | remoteproc: q6v5-mss: fix error handling in q6v5_pds_enable | expand |
Hello: This patch was applied to qcom/linux.git (refs/heads/for-next): On Mon, 2 Nov 2020 22:34:33 +0800 you wrote: > 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. > > [...] Here is the summary with links: - remoteproc: q6v5-mss: fix error handling in q6v5_pds_enable https://git.kernel.org/qcom/c/a24723050037 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html
diff --git a/drivers/remoteproc/qcom_q6v5_mss.c b/drivers/remoteproc/qcom_q6v5_mss.c index eb3457a6c3b7..ba6f7551242d 100644 --- a/drivers/remoteproc/qcom_q6v5_mss.c +++ b/drivers/remoteproc/qcom_q6v5_mss.c @@ -349,8 +349,11 @@ 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;
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> --- drivers/remoteproc/qcom_q6v5_mss.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)