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drm/i915: get rid of intel_plane_restore in intel_crtc_page_flip

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Use a full atomic call instead. intel_crtc_page_flip will still
have to live until async updates are allowed.

This doesn't seem to be a regression from the convert to atomic,
part 3 patch. During GPU reset it fixes the following warning:

 ------------[ cut here ]------------
WARNING: CPU: 0 PID: 752 at drivers/gpu/drm/drm_crtc.c:5337 drm_mode_page_flip_ioctl+0x27b/0x360()
Modules linked in: i915
CPU: 0 PID: 752 Comm: Xorg Not tainted 4.1.0-rc7-patser+ #4090
Hardware name: NUC5i7RYB, BIOS RYBDWi35.86A.0246.2015.0309.1355 03/09/2015
 ffffffff81c90866 ffff8800d87c3ca8 ffffffff817f7d87 0000000080000001
 0000000000000000 ffff8800d87c3ce8 ffffffff81084955 ffff880000000000
 ffff8800d87c3dc0 ffff8800d93d1208 0000000000000000 ffff8800b7d1f3e0
Call Trace:
 [<ffffffff817f7d87>] dump_stack+0x4f/0x7b
 [<ffffffff81084955>] warn_slowpath_common+0x85/0xc0
 [<ffffffff81084a35>] warn_slowpath_null+0x15/0x20
 [<ffffffff8146dffb>] drm_mode_page_flip_ioctl+0x27b/0x360
 [<ffffffff8145ccb0>] drm_ioctl+0x1a0/0x6a0
 [<ffffffff810b3b41>] ? get_parent_ip+0x11/0x50
 [<ffffffff812e5540>] ? avc_has_perm+0x20/0x280
 [<ffffffff810b3b41>] ? get_parent_ip+0x11/0x50
 [<ffffffff811ea0f8>] do_vfs_ioctl+0x2f8/0x530
 [<ffffffff811f6001>] ? expand_files+0x261/0x270
 [<ffffffff812e7c16>] ? selinux_file_ioctl+0x56/0x100
 [<ffffffff811ea3b1>] SyS_ioctl+0x81/0xa0
 [<ffffffff81801b97>] system_call_fastpath+0x12/0x6f
---[ end trace 9ce834560085bd64 ]---

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Maarten Lankhorst 2015-06-12 11:15:40 +02:00 committed by Jani Nikula
parent b17d48e27d
commit 02e0efb5b4
1 changed files with 28 additions and 1 deletions
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29
drivers/gpu/drm/i915/intel_display.c
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@ -11618,8 +11618,35 @@ free_work:
kfree(work);
if (ret == -EIO) {
struct drm_atomic_state *state;
struct drm_plane_state *plane_state;
out_hang:
ret = intel_plane_restore(primary);
state = drm_atomic_state_alloc(dev);
if (!state)
return -ENOMEM;
state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc);
retry:
plane_state = drm_atomic_get_plane_state(state, primary);
ret = PTR_ERR_OR_ZERO(plane_state);
if (!ret) {
drm_atomic_set_fb_for_plane(plane_state, fb);
ret = drm_atomic_set_crtc_for_plane(plane_state, crtc);
if (!ret)
ret = drm_atomic_commit(state);
}
if (ret == -EDEADLK) {
drm_modeset_backoff(state->acquire_ctx);
drm_atomic_state_clear(state);
goto retry;
}
if (ret)
drm_atomic_state_free(state);
if (ret == 0 && event) {
spin_lock_irq(&dev->event_lock);
drm_send_vblank_event(dev, pipe, event);