[PATCH 4.18 66/88] drm/nouveau/drm/nouveau: Dont forget to cancel hpd_work on suspend/unload
From: Greg Kroah-Hartman
Date: Thu Sep 27 2018 - 05:15:51 EST
4.18-stable review patch. If anyone has any objections, please let me know.
------------------
From: Lyude Paul <lyude@xxxxxxxxxx>
commit 2f7ca781fd382cf8dde73ed36dfdd93fd05b3332 upstream.
Currently, there's nothing in nouveau that actually cancels this work
struct. So, cancel it on suspend/unload. Otherwise, if we're unlucky
enough hpd_work might try to keep running up until the system is
suspended.
Signed-off-by: Lyude Paul <lyude@xxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Ben Skeggs <bskeggs@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/nouveau/nouveau_display.c | 9 ++++++---
drivers/gpu/drm/nouveau/nouveau_display.h | 2 +-
drivers/gpu/drm/nouveau/nouveau_drm.c | 2 +-
3 files changed, 8 insertions(+), 5 deletions(-)
--- a/drivers/gpu/drm/nouveau/nouveau_display.c
+++ b/drivers/gpu/drm/nouveau/nouveau_display.c
@@ -425,7 +425,7 @@ nouveau_display_init(struct drm_device *
}
void
-nouveau_display_fini(struct drm_device *dev, bool suspend)
+nouveau_display_fini(struct drm_device *dev, bool suspend, bool runtime)
{
struct nouveau_display *disp = nouveau_display(dev);
struct nouveau_drm *drm = nouveau_drm(dev);
@@ -450,6 +450,9 @@ nouveau_display_fini(struct drm_device *
}
drm_connector_list_iter_end(&conn_iter);
+ if (!runtime)
+ cancel_work_sync(&drm->hpd_work);
+
drm_kms_helper_poll_disable(dev);
disp->fini(dev);
}
@@ -618,11 +621,11 @@ nouveau_display_suspend(struct drm_devic
}
}
- nouveau_display_fini(dev, true);
+ nouveau_display_fini(dev, true, runtime);
return 0;
}
- nouveau_display_fini(dev, true);
+ nouveau_display_fini(dev, true, runtime);
list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) {
struct nouveau_framebuffer *nouveau_fb;
--- a/drivers/gpu/drm/nouveau/nouveau_display.h
+++ b/drivers/gpu/drm/nouveau/nouveau_display.h
@@ -62,7 +62,7 @@ nouveau_display(struct drm_device *dev)
int nouveau_display_create(struct drm_device *dev);
void nouveau_display_destroy(struct drm_device *dev);
int nouveau_display_init(struct drm_device *dev);
-void nouveau_display_fini(struct drm_device *dev, bool suspend);
+void nouveau_display_fini(struct drm_device *dev, bool suspend, bool runtime);
int nouveau_display_suspend(struct drm_device *dev, bool runtime);
void nouveau_display_resume(struct drm_device *dev, bool runtime);
int nouveau_display_vblank_enable(struct drm_device *, unsigned int);
--- a/drivers/gpu/drm/nouveau/nouveau_drm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_drm.c
@@ -629,7 +629,7 @@ nouveau_drm_unload(struct drm_device *de
nouveau_debugfs_fini(drm);
if (dev->mode_config.num_crtc)
- nouveau_display_fini(dev, false);
+ nouveau_display_fini(dev, false, false);
nouveau_display_destroy(dev);
nouveau_bios_takedown(dev);