From: Luca Weiss <luca.weiss@fairphone.com> stable inclusion from stable-v5.10.121 commit 27ad46da44177a78a4a0cae6fe03906888c61aa1 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I5L6CQ Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=... -------------------------------- [ Upstream commit 86594f6af867b5165d2ba7b5a71fae3a5961e56c ] If venus_probe fails at pm_runtime_put_sync the error handling first calls hfi_destroy and afterwards hfi_core_deinit. As hfi_destroy sets core->ops to NULL, hfi_core_deinit cannot call the core_deinit function anymore. Avoid this null pointer derefence by skipping the call when necessary. Signed-off-by: Luca Weiss <luca.weiss@fairphone.com> Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Zheng Zengkai <zhengzengkai@huawei.com> Acked-by: Xie XiuQi <xiexiuqi@huawei.com> --- drivers/media/platform/qcom/venus/hfi.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/media/platform/qcom/venus/hfi.c b/drivers/media/platform/qcom/venus/hfi.c index a59022adb14c..966b4d9b57a9 100644 --- a/drivers/media/platform/qcom/venus/hfi.c +++ b/drivers/media/platform/qcom/venus/hfi.c @@ -104,6 +104,9 @@ int hfi_core_deinit(struct venus_core *core, bool blocking) mutex_lock(&core->lock); } + if (!core->ops) + goto unlock; + ret = core->ops->core_deinit(core); if (!ret) -- 2.20.1