linux-kernel - [PATCH v4 0/2] drm: Check polling initialized before

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Date: Thu,  1 Feb 2024 22:42:56 -0800
From: Shradha Gupta <shradhagupta@...ux.microsoft.com>
To: linux-kernel@...r.kernel.org,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.dev>,
	David Airlie <airlied@...il.com>,
	Daniel Vetter <daniel@...ll.ch>,
	dri-devel@...ts.freedesktop.org,
	Saurabh Singh Sengar <ssengar@...ux.microsoft.com>
Cc: Shradha Gupta <shradhagupta@...ux.microsoft.com>,
	Shradha Gupta <shradhagupta@...rosoft.com>
Subject: [PATCH v4 0/2] drm: Check polling initialized before

This patchset consists of sanity checks before enabling/disabling
output polling to make sure we do not call polling enable and disable
functions when polling for the device is not initialized or is now
uninitialized(by drm_kms_helper_poll_fini() function)

The first patch consists of these checks in
drm_kms_helper_poll_disable() and drm_kms_helper_poll_enable() calls.
It further flags a warning if a caller violates this. It also adds
these checks in drm_mode_config_helper_resume() and
drm_mode_config_helper_suspend() calls to avoid this warning.

The second patch adds a similar missing check in
drm_helper_probe_single_connector_modes() function that is exposed by
the new warning introduced in the first patch.

Shradha Gupta (2):
  drm: Check output polling initialized before disabling
  drm: Check polling initialized before enabling in
    drm_helper_probe_single_connector_modes

 drivers/gpu/drm/drm_modeset_helper.c | 19 ++++++++++++++++---
 drivers/gpu/drm/drm_probe_helper.c   | 21 +++++++++++++++++----
 2 files changed, 33 insertions(+), 7 deletions(-)

-- 
2.34.1