linux-kernel - [PATCH 0/2] DSS interrupt related bug fixes

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Message-ID: <20241012150710.261767-1-devarsht@ti.com>
Date: Sat, 12 Oct 2024 20:37:08 +0530
From: Devarsh Thakkar <devarsht@...com>
To: <jyri.sarha@....fi>, <tomi.valkeinen@...asonboard.com>,
        <airlied@...il.com>, <maarten.lankhorst@...ux.intel.com>,
        <mripard@...nel.org>, <tzimmermann@...e.de>,
        <dri-devel@...ts.freedesktop.org>, <simona@...ll.ch>,
        <linux-kernel@...r.kernel.org>
CC: <praneeth@...com>, <vigneshr@...com>, <aradhya.bhatia@...ux.dev>,
        <s-jain1@...com>, <r-donadkar@...com>, <sam@...nborg.org>,
        <bparrot@...com>, <jcormier@...ticallink.com>, <devarsht@...com>
Subject: [PATCH 0/2] DSS interrupt related bug fixes

While reviewing the interrupt related code and register dump, we found couple
of issues related to interrupt related register programming. Firstly, the
function enabling/disabling the interrupts was trying to clear the
interrupts which were not enabled in first place and secondly there is a
potential race scenario between interrupt subroutine and interrupt
enable/disable related functions as they both access interrupt registers
without a common lock. This series addresses the aforementioned problems.

Devarsh Thakkar (2):
  drm/tidss: Clear the interrupt status for interrupts being disabled
  drm/tidss: Avoid race condition while handling interrupt registers

 drivers/gpu/drm/tidss/tidss_dispc.c | 12 ++++++++----
 drivers/gpu/drm/tidss/tidss_irq.c   |  2 ++
 2 files changed, 10 insertions(+), 4 deletions(-)

-- 
2.39.1