linux-kernel - [PATCH v2 0/2] fix missing unplug interrupt problem

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: <1610564400-29788-1-git-send-email-khsieh@codeaurora.org>
Date:   Wed, 13 Jan 2021 10:59:58 -0800
From:   Kuogee Hsieh <khsieh@...eaurora.org>
To:     dri-devel@...ts.freedesktop.org, robdclark@...il.com,
        sean@...rly.run, swboyd@...omium.org
Cc:     Kuogee Hsieh <khsieh@...eaurora.org>, tanmay@...eaurora.org,
        abhinavk@...eaurora.org, aravindh@...eaurora.org, airlied@...ux.ie,
        daniel@...ll.ch, linux-arm-msm@...r.kernel.org,
        freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 0/2]  fix missing unplug interrupt problem

Both AUX_SW_RESET and DP_SW_RESET clear pending HPD interrupts.
Therefore irq_hpd handler should not issues either aux or sw reset
to avoid following unplug interrupt be cleared accidentally.

Kuogee Hsieh (2):
  drm/msm/dp: return fail when both link lane and rate are 0 at dpcd
    read
  drm/msm/dp: unplug interrupt missed after irq_hpd handler

 drivers/gpu/drm/msm/dp/dp_aux.c     |  7 -------
 drivers/gpu/drm/msm/dp/dp_catalog.c | 24 ++++++++++++++++++++++++
 drivers/gpu/drm/msm/dp/dp_ctrl.c    | 15 ++++++++++-----
 drivers/gpu/drm/msm/dp/dp_display.c |  7 +++++++
 drivers/gpu/drm/msm/dp/dp_panel.c   | 12 +++++++++---
 5 files changed, 50 insertions(+), 15 deletions(-)

-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project