linux-kernel - [PATCH 2/4] clk: qcom: gcc-sdm660: Mark GPU CFG AHB clock as critical

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-Id: <20200926130225.13733-3-kholk11@gmail.com>
Date:   Sat, 26 Sep 2020 15:02:23 +0200
From:   kholk11@...il.com
To:     agross@...nel.org
Cc:     bjorn.andersson@...aro.org, sboyd@...nel.org, kholk11@...il.com,
        marijns95@...il.com, konradybcio@...il.com,
        martin.botka1@...il.com, linux-arm-msm@...r.kernel.org,
        phone-devel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/4] clk: qcom: gcc-sdm660: Mark GPU CFG AHB clock as critical

From: AngeloGioacchino Del Regno <kholk11@...il.com>

This clock is critical for any access to the GPU: gating it will
crash the system when the GPU has been initialized (so, you cannot
gate it unless you deinit the Adreno completely).

So, to achieve a working state with GPU on, set the CLK_IS_CRITICAL
flag to this clock.

Signed-off-by: AngeloGioacchino Del Regno <kholk11@...il.com>
---
 drivers/clk/qcom/gcc-sdm660.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/clk/qcom/gcc-sdm660.c b/drivers/clk/qcom/gcc-sdm660.c
index 93ac77628bec..7b1c8d1f6388 100644
--- a/drivers/clk/qcom/gcc-sdm660.c
+++ b/drivers/clk/qcom/gcc-sdm660.c
@@ -1571,6 +1571,7 @@ static struct clk_branch gcc_gpu_cfg_ahb_clk = {
 		.hw.init = &(struct clk_init_data){
 			.name = "gcc_gpu_cfg_ahb_clk",
 			.ops = &clk_branch2_ops,
+			.flags = CLK_IS_CRITICAL,
 		},
 	},
 };
-- 
2.28.0