linux-kernel - [PATCH RESEND 0/2] Ensure that HiKey 970 won't hang during boot time

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-next>] [day] [month] [year] [list]

Message-Id: <cover.1637064075.git.mchehab+huawei@kernel.org>
Date:   Tue, 16 Nov 2021 12:05:42 +0000
From:   Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
To:     Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>
Cc:     linuxarm@...wei.com, mauro.chehab@...wei.com,
        Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        Wei Xu <xuwei5@...ilicon.com>, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH RESEND 0/2] Ensure that HiKey 970 won't hang during boot time

During HiKey 970 boot, hundreds of clock lines are disabled, causing the device to
hang.

There are actually two issues here:

1. The clk core doesn't wait enough time for the device drivers to be probed
    before agressively disabling "unused" clocks. This was noticed at the
    drivers built as modules;
2. Several HiKey 970 gates are essencial for the device to work, but they're
    not marked as such.

The first patch fixes the clk core issue, while second one marks the mandatory
clocks as such.

Mauro Carvalho Chehab (2):
  clk: wait for extra time before disabling unused clocks
  clk: clk-hi3670: mark some clocks as CLK_IS_CRITICAL

 drivers/clk/clk.c                  | 51 +++++++++++++++++++-----------
 drivers/clk/hisilicon/clk-hi3670.c | 24 +++++++-------
 2 files changed, 44 insertions(+), 31 deletions(-)

-- 
2.33.1