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| author | Egbert Eich <eich@suse.de> | 2012-10-15 08:21:39 +0200 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2012-10-15 13:21:02 -0400 |
| commit | 082918471139b07964967cfe5f70230909c82ae1 (patch) | |
| tree | 07a6d14d974c0d65fd3bc99bb517d162ef6ebeb0 | |
| parent | 3691feea9826771d853d28d37b6b6e34758fa66d (diff) | |
| download | linux-3.10-082918471139b07964967cfe5f70230909c82ae1.tar.gz linux-3.10-082918471139b07964967cfe5f70230909c82ae1.tar.bz2 linux-3.10-082918471139b07964967cfe5f70230909c82ae1.zip | |
drm/radeon: Don't destroy I2C Bus Rec in radeon_ext_tmds_enc_destroy().
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 <eich@suse.de>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_legacy_encoders.c | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c index fb15b62ff98..a13ad9d707c 100644 --- a/drivers/gpu/drm/radeon/radeon_legacy_encoders.c +++ b/drivers/gpu/drm/radeon/radeon_legacy_encoders.c @@ -991,11 +991,7 @@ 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); |