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authorMaarten Lankhorst <maarten.lankhorst@linux.intel.com>2015-08-11 09:54:59 +0200
committerDaniel Vetter <daniel.vetter@ffwll.ch>2015-08-11 12:04:19 +0200
commitcebbb7396b4493cf72e832cb2aa06f42b1957c7c (patch)
tree6f7087634abb2bb4abf4a3ad9e74bd92b6b181f1
parent992cbf19b32900efa17850b9fa0031fd623edd4d (diff)
drm/core: Set mode to NULL when connectors in a set drops to 0.
Without this when a MST connector is removed drm_atomic_helper_set_config can complain about set->mode && !set->num_connectors. ------------[ cut here ]------------ WARNING: CPU: 2 PID: 2403 at drivers/gpu/drm/drm_atomic_helper.c:1673 drm_atomic_helper_set_config+0x22e/0x420() CPU: 2 PID: 2403 Comm: kms_flip Not tainted 4.2.0-rc5 #4233 Hardware name: NUC5i7RYB, BIOS RYBDWi35.86A.0246.2015.0309.1355 03/09/2015 ffffffff81ac75e8 ffff88004e4ffbf8 ffffffff81714c34 0000000080000000 0000000000000000 ffff88004e4ffc38 ffffffff8107bf81 ffff88004e4ffc48 ffff8800d8ca0690 ffff8800d8d7a080 ffff8800d8cc2290 ffff8800d07bc9f0 Call Trace: [<ffffffff81714c34>] dump_stack+0x4f/0x7b [<ffffffff8107bf81>] warn_slowpath_common+0x81/0xc0 [<ffffffff8107c065>] warn_slowpath_null+0x15/0x20 [<ffffffff813d9e3e>] drm_atomic_helper_set_config+0x22e/0x420 [<ffffffff813da174>] ? drm_atomic_helper_plane_set_property+0x84/0xc0 [<ffffffff813ee101>] drm_mode_set_config_internal+0x61/0x100 [<ffffffff813dc4ed>] restore_fbdev_mode+0xbd/0xe0 [<ffffffff813de1e4>] drm_fb_helper_restore_fbdev_mode_unlocked+0x24/0x70 [<ffffffffc0123d11>] intel_fbdev_restore_mode+0x21/0x80 [i915] [<ffffffffc014bf69>] i915_driver_lastclose+0x9/0x10 [i915] [<ffffffff813e2429>] drm_lastclose+0x29/0x130 [<ffffffff813e2844>] drm_release+0x314/0x500 [<ffffffff81194795>] __fput+0xe5/0x1f0 [<ffffffff811948d9>] ____fput+0x9/0x10 [<ffffffff810968d8>] task_work_run+0x88/0xb0 [<ffffffff8107d53f>] do_exit+0x37f/0xa90 [<ffffffff8127e258>] ? selinux_file_ioctl+0x48/0xc0 [<ffffffff81277dfe>] ? security_file_ioctl+0x3e/0x60 [<ffffffff8107ec80>] do_group_exit+0x40/0xa0 [<ffffffff8107ecef>] SyS_exit_group+0xf/0x10 [<ffffffff8171bdd7>] entry_SYSCALL_64_fastpath+0x12/0x6a ---[ end trace 0daf358c49351567 ]--- Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
-rw-r--r--drivers/gpu/drm/drm_fb_helper.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 5875059a7625..418d299f3b12 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -168,11 +168,14 @@ static void remove_from_modeset(struct drm_mode_set *set,
}
set->num_connectors--;
- /* because i915 is pissy about this..
+ /*
* TODO maybe need to makes sure we set it back to !=NULL somewhere?
*/
- if (set->num_connectors == 0)
+ if (set->num_connectors == 0) {
set->fb = NULL;
+ drm_mode_destroy(connector->dev, set->mode);
+ set->mode = NULL;
+ }
}
int drm_fb_helper_remove_one_connector(struct drm_fb_helper *fb_helper,