linux-kernel - drm/radeon/dpm: fix uninitialized read from stack in kv_dpm_late

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Message-ID: <20140131021730.GA11601@redhat.com>
Date:	Thu, 30 Jan 2014 21:17:30 -0500
From:	Dave Jones <davej@...hat.com>
To:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Cc:	alexander.deucher@....com
Subject: drm/radeon/dpm: fix uninitialized read from stack in
 kv_dpm_late_enable

If we take the false branch of the if quoted in the diff below, we
end up doing a return ret, without ever having initialized it.

Picked up by coverity.

Signed-off-by: Dave Jones <davej@...oraproject.org>
 
diff --git a/drivers/gpu/drm/radeon/kv_dpm.c b/drivers/gpu/drm/radeon/kv_dpm.c
index b6e01d5d2cce..351db361239d 100644
--- a/drivers/gpu/drm/radeon/kv_dpm.c
+++ b/drivers/gpu/drm/radeon/kv_dpm.c
@@ -1223,7 +1223,7 @@ int kv_dpm_enable(struct radeon_device *rdev)
 
 int kv_dpm_late_enable(struct radeon_device *rdev)
 {
-	int ret;
+	int ret = 0;
 
 	if (rdev->irq.installed &&
 	    r600_is_internal_thermal_sensor(rdev->pm.int_thermal_type)) {
--
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