[PATCH 3.4 178/214] drm/radeon: cleanup properly if mmio mapping fails
From: Greg Kroah-Hartman
Date: Thu Jun 05 2014 - 00:32:43 EST
3.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alex Deucher <alexander.deucher@xxxxxxx>
commit 0cd9cb76ae26a19df21abc6f94f5fff141e689c7 upstream.
If we fail to map the mmio BAR, skip driver tear down
that requires mmio.
Should fix:
https://bugzilla.kernel.org/show_bug.cgi?id=56541
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
Cc: Weng Meiling <wengmeiling.weng@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/radeon/radeon_kms.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/gpu/drm/radeon/radeon_kms.c
+++ b/drivers/gpu/drm/radeon/radeon_kms.c
@@ -39,8 +39,12 @@ int radeon_driver_unload_kms(struct drm_
if (rdev == NULL)
return 0;
+ if (rdev->rmmio == NULL)
+ goto done_free;
radeon_modeset_fini(rdev);
radeon_device_fini(rdev);
+
+done_free:
kfree(rdev);
dev->dev_private = NULL;
return 0;
--
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