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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Douglas Anderson <dianders@chromium.org>,
        Mansur Alisha Shaik <mansur@codeaurora.org>,
        Stanimir Varbanov <stanimir.varbanov@linaro.org>,
        Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Subject: [PATCH 5.8 055/232] media: venus: fix multiple encoder crash
Date:   Thu, 20 Aug 2020 11:18:26 +0200
Message-Id: <20200820091615.450774241@linuxfoundation.org>
In-Reply-To: <20200820091612.692383444@linuxfoundation.org>
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From: Mansur Alisha Shaik <mansur@codeaurora.org>

commit e0eb34810113dbbf1ace57440cf48d514312a373 upstream.

Currently we are considering the instances which are available
in core->inst list for load calculation in min_loaded_core()
function, but this is incorrect because by the time we call
decide_core() for second instance, the third instance not
filled yet codec_freq_data pointer.

Solve this by considering the instances whose session has started.

Cc: stable@vger.kernel.org # v5.7+
Fixes: 4ebf969375bc ("media: venus: introduce core selection")
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Mansur Alisha Shaik <mansur@codeaurora.org>
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/media/platform/qcom/venus/pm_helpers.c |    4 ++++
 1 file changed, 4 insertions(+)

--- a/drivers/media/platform/qcom/venus/pm_helpers.c
+++ b/drivers/media/platform/qcom/venus/pm_helpers.c
@@ -496,6 +496,10 @@ min_loaded_core(struct venus_inst *inst,
 	list_for_each_entry(inst_pos, &core->instances, list) {
 		if (inst_pos == inst)
 			continue;
+
+		if (inst_pos->state != INST_START)
+			continue;
+
 		vpp_freq = inst_pos->clk_data.codec_freq_data->vpp_freq;
 		coreid = inst_pos->clk_data.core_id;