[Intel-gfx] [PATCH 5/5] Fixing a Possible Null Pointer Dereference.

Nischal Varide nischal.varide at intel.com
Mon Aug 24 03:45:56 UTC 2020


Fixing a Possible Null Pointer Dereference in intel_crt.c.
Introduced a Null Check for dev_priv pointer before dereferencing.

Signed-off-by: Nischal Varide <nischal.varide at intel.com>
---
 drivers/gpu/drm/i915/display/intel_crt.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_crt.c b/drivers/gpu/drm/i915/display/intel_crt.c
index 5b4510ce5693..b5777fdc8cac 100644
--- a/drivers/gpu/drm/i915/display/intel_crt.c
+++ b/drivers/gpu/drm/i915/display/intel_crt.c
@@ -504,6 +504,9 @@ static bool valleyview_crt_detect_hotplug(struct drm_connector *connector)
 	bool ret;
 	u32 save_adpa;
 
+	if (!(dev_priv))
+		return false;
+
 	/*
 	 * Doing a force trigger causes a hpd interrupt to get sent, which can
 	 * get us stuck in a loop if we're polling:
-- 
2.26.0



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