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drm: Check polling initialized before enabling in drm_helper_probe_single_connector_modes 

commit 048a36d8a6 upstream.

In function drm_helper_probe_single_connector_modes() when we enable
polling again, if it is already uninitialized, a warning is reported.
This patch fixes the warning message by checking if poll is initialized
before enabling it.

Reported-by: kernel test robot <oliver.sang@intel.com>
Closes: https://lore.kernel.org/oe-lkp/202401191128.db8423f1-oliver.sang@intel.com
Signed-off-by: Shradha Gupta <shradhagupta@linux.microsoft.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/1706856224-9725-1-git-send-email-shradhagupta@linux.microsoft.com
Cc: Holger Hoffstätte <holger@applied-asynchrony.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Shradha Gupta 2024-02-01 22:43:44 -08:00 committed by Greg Kroah-Hartman
parent 14ac934db8
commit 5c1dc516f5
1 changed files with 6 additions and 2 deletions
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8
drivers/gpu/drm/drm_probe_helper.c
View File

@ -629,8 +629,12 @@ retry:
0);
}
/* Re-enable polling in case the global poll config changed. */
drm_kms_helper_poll_enable(dev);
/*
* Re-enable polling in case the global poll config changed but polling
* is still initialized.
*/
if (dev->mode_config.poll_enabled)
drm_kms_helper_poll_enable(dev);
if (connector->status == connector_status_disconnected) {
DRM_DEBUG_KMS("[CONNECTOR:%d:%s] disconnected\n",