From 526c654a8a0641d4289bf65effde4d6095bd8384 Mon Sep 17 00:00:00 2001 From: Emily Deng Date: Fri, 31 May 2019 17:35:27 +0800 Subject: drm/amdgpu/display: Fix reload driver error Issue: Will have follow error when reload driver: [ 3986.567739] sysfs: cannot create duplicate filename '/devices/pci0000:00/0000:00:07.0/drm_dp_aux_dev' [ 3986.567743] CPU: 6 PID: 1767 Comm: modprobe Tainted: G OE 5.0.0-rc1-custom #1 [ 3986.567745] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Ubuntu-1.8.2-1ubuntu1 04/01/2014 [ 3986.567746] Call Trace: ...... [ 3986.567808] drm_dp_aux_register_devnode+0xdc/0x140 [drm_kms_helper] ...... [ 3986.569081] kobject_add_internal failed for drm_dp_aux_dev with -EEXIST, don't try to register things with the same name in the same directory. Reproduce sequences: 1.modprobe amdgpu 2.modprobe -r amdgpu 3.modprobe amdgpu Root cause: When unload driver, it doesn't unregister aux. v2: Don't use has_aux Signed-off-by: Emily Deng Reviewed-by: Nicholas Kazlauskas Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) (limited to 'drivers/gpu/drm') diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 95d5966479e9..d3e7755b86bf 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -3675,6 +3675,13 @@ int amdgpu_dm_connector_atomic_get_property(struct drm_connector *connector, return ret; } +static void amdgpu_dm_connector_unregister(struct drm_connector *connector) +{ + struct amdgpu_dm_connector *amdgpu_dm_connector = to_amdgpu_dm_connector(connector); + + drm_dp_aux_unregister(&amdgpu_dm_connector->dm_dp_aux.aux); +} + static void amdgpu_dm_connector_destroy(struct drm_connector *connector) { struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector); @@ -3703,6 +3710,11 @@ static void amdgpu_dm_connector_destroy(struct drm_connector *connector) drm_dp_cec_unregister_connector(&aconnector->dm_dp_aux.aux); drm_connector_unregister(connector); drm_connector_cleanup(connector); + if (aconnector->i2c) { + i2c_del_adapter(&aconnector->i2c->base); + kfree(aconnector->i2c); + } + kfree(connector); } @@ -3760,7 +3772,8 @@ static const struct drm_connector_funcs amdgpu_dm_connector_funcs = { .atomic_duplicate_state = amdgpu_dm_connector_atomic_duplicate_state, .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, .atomic_set_property = amdgpu_dm_connector_atomic_set_property, - .atomic_get_property = amdgpu_dm_connector_atomic_get_property + .atomic_get_property = amdgpu_dm_connector_atomic_get_property, + .early_unregister = amdgpu_dm_connector_unregister }; static int get_modes(struct drm_connector *connector) -- cgit v1.2.3