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.s...@intel.com>
Closes: 
https://lore.kernel.org/oe-lkp/202401191128.db8423f1-oliver.s...@intel.com
Signed-off-by: Shradha Gupta <shradhagu...@linux.microsoft.com>
---
 Changes in v4
 * Clubbed this patch with similar patches and added a cover letter
---
 drivers/gpu/drm/drm_probe_helper.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/drm_probe_helper.c 
b/drivers/gpu/drm/drm_probe_helper.c
index bd76603dc387..30e6063535cd 100644
--- a/drivers/gpu/drm/drm_probe_helper.c
+++ b/drivers/gpu/drm/drm_probe_helper.c
@@ -622,8 +622,12 @@ int drm_helper_probe_single_connector_modes(struct 
drm_connector *connector,
                                         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",
-- 
2.34.1

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