3.5.7u1 -stable review patch. If anyone has any objections, please let me know.
------------------
From: Egbert Eich <e...@suse.de>
commit 082918471139b07964967cfe5f70230909c82ae1 upstream.
radeon_i2c_fini() walks thru the list of I2C bus recs rdev->i2c_bus[]
to destroy each of them.
radeon_ext_tmds_enc_destroy() however also has code to destroy it's
associated I2C bus rec which has been obtained by radeon_i2c_lookup()
and is therefore also in the i2c_bus[] list.
This causes a double free resulting in a kernel panic when unloading
the radeon driver.
Removing destroy code from radeon_ext_tmds_enc_destroy() fixes this
problem.
agd5f: fix compiler warning
Signed-off-by: Egbert Eich <e...@suse.de>
Signed-off-by: Alex Deucher <alexander.deuc...@amd.com>
Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesin...@canonical.com>
---
drivers/gpu/drm/radeon/radeon_legacy_encoders.c | 6 +-----
1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
index a0c8222..9e62325 100644
--- a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
+++ b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c
@@ -974,11 +974,7 @@ static void radeon_legacy_tmds_ext_mode_set(struct
drm_encoder *encoder,
static void radeon_ext_tmds_enc_destroy(struct drm_encoder *encoder)
{
struct radeon_encoder *radeon_encoder = to_radeon_encoder(encoder);
- struct radeon_encoder_ext_tmds *tmds = radeon_encoder->enc_priv;
- if (tmds) {
- if (tmds->i2c_bus)
- radeon_i2c_destroy(tmds->i2c_bus);
- }
+ /* don't destroy the i2c bus record here, this will be done in
radeon_i2c_fini */
kfree(radeon_encoder->enc_priv);
drm_encoder_cleanup(encoder);
kfree(radeon_encoder);
--
1.7.9.5
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