From b42d3b159ad8073602e466244f49f29f327e6798 Mon Sep 17 00:00:00 2001 From: Pankaj Bharadiya Date: Mon, 9 Dec 2019 20:09:02 +0530 Subject: [PATCH] drm/i915/display: cleanup intel_bw_state on i915 module removal intel_bw_state allocated memory is not getting freed even after module removal. kmemleak reported backtrace: [<0000000079019739>] kmemdup+0x17/0x40 [<00000000d58c1b9d>] intel_bw_duplicate_state+0x1b/0x40 [i915] [<000000007423ed0c>] drm_atomic_get_private_obj_state+0xca/0x140 [<00000000100e3533>] intel_bw_atomic_check+0x133/0x350 [i915] [<00000000126d0e0c>] intel_atomic_check+0x1ab7/0x20d0 [i915] [<00000000d5dfc004>] drm_atomic_check_only+0x563/0x810 [<00000000c9379611>] drm_atomic_commit+0xe/0x50 [<00000000ec82b765>] drm_atomic_helper_disable_all+0x133/0x160 [<000000003c44760c>] drm_atomic_helper_shutdown+0x65/0xc0 [<00000000414e3e5c>] i915_driver_remove+0xcb/0x130 [i915] [<00000000f8544c2a>] i915_pci_remove+0x19/0x40 [i915] [<000000002dcbd148>] pci_device_remove+0x36/0xb0 [<000000003c8c6b0a>] device_release_driver_internal+0xe0/0x1c0 [<00000000580e9566>] unbind_store+0xc3/0x120 [<00000000869d0df5>] kernfs_fop_write+0x104/0x190 [<000000004dc1a355>] vfs_write+0xb9/0x1d0 Call the drm_atomic_private_obj_fini(), which inturn calls the intel_bw_destroy_state() to make sure the intel_bw_state memory is freed properly. Reviewed-by: Lucas De Marchi Signed-off-by: Pankaj Bharadiya Signed-off-by: Uma Shankar Link: https://patchwork.freedesktop.org/patch/msgid/20191209143921.9240-1-pankaj.laxminarayan.bharadiya@intel.com --- drivers/gpu/drm/i915/display/intel_bw.c | 5 +++++ drivers/gpu/drm/i915/display/intel_bw.h | 1 + drivers/gpu/drm/i915/display/intel_display.c | 2 ++ 3 files changed, 8 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_bw.c b/drivers/gpu/drm/i915/display/intel_bw.c index dcb66a33be9b..b228671d5a5d 100644 --- a/drivers/gpu/drm/i915/display/intel_bw.c +++ b/drivers/gpu/drm/i915/display/intel_bw.c @@ -486,3 +486,8 @@ int intel_bw_init(struct drm_i915_private *dev_priv) return 0; } + +void intel_bw_cleanup(struct drm_i915_private *dev_priv) +{ + drm_atomic_private_obj_fini(&dev_priv->bw_obj); +} diff --git a/drivers/gpu/drm/i915/display/intel_bw.h b/drivers/gpu/drm/i915/display/intel_bw.h index 9db10af012f4..20b9ad241802 100644 --- a/drivers/gpu/drm/i915/display/intel_bw.h +++ b/drivers/gpu/drm/i915/display/intel_bw.h @@ -25,6 +25,7 @@ struct intel_bw_state { void intel_bw_init_hw(struct drm_i915_private *dev_priv); int intel_bw_init(struct drm_i915_private *dev_priv); +void intel_bw_cleanup(struct drm_i915_private *dev_priv); int intel_bw_atomic_check(struct intel_atomic_state *state); void intel_bw_crtc_update(struct intel_bw_state *bw_state, const struct intel_crtc_state *crtc_state); diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c index 6683377d0992..0a8221ede875 100644 --- a/drivers/gpu/drm/i915/display/intel_display.c +++ b/drivers/gpu/drm/i915/display/intel_display.c @@ -18202,6 +18202,8 @@ void intel_modeset_driver_remove(struct drm_i915_private *i915) intel_gmbus_teardown(i915); + intel_bw_cleanup(i915); + destroy_workqueue(i915->flip_wq); destroy_workqueue(i915->modeset_wq); -- 2.30.2