Nouveau - Aug 2018 - [PATCH 0/3] Cleanup drm_kms_helper_poll_enable/disable() calls

Does what it says on the label, a lot of these calls are already handled
somewhere else and don't appear to be here for a legitimate reason
anymore.

Lyude Paul (3):
  drm/nouveau: Remove useless poll_enable() call in
    switcheroo_set_state()
  drm/nouveau: Remove useless poll_disable() call in
    switcheroo_set_state()
  drm/nouveau: Remove useless poll_enable() call in drm_load()

 drivers/gpu/drm/nouveau/nouveau_drm.c | 4 +---
 drivers/gpu/drm/nouveau/nouveau_vga.c | 2 --
 2 files changed, 1 insertion(+), 5 deletions(-)

-- 
2.17.1

This doesn't do anything, drm_kms_helper_poll_enable() gets called in
nouveau_pmops_resume()->nouveau_display_resume()->nouveau_display_init()
already.

Signed-off-by: Lyude Paul <lyude at redhat.com>
Reviewed-by: Karol Herbst <karolherbst at gmail.com>
Cc: Lukas Wunner <lukas at wunner.de>
---
 drivers/gpu/drm/nouveau/nouveau_vga.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/nouveau_vga.c
b/drivers/gpu/drm/nouveau/nouveau_vga.c
index 3da5a4305aa4..09b1d8151881 100644
--- a/drivers/gpu/drm/nouveau/nouveau_vga.c
+++ b/drivers/gpu/drm/nouveau/nouveau_vga.c
@@ -46,7 +46,6 @@ nouveau_switcheroo_set_state(struct pci_dev *pdev,
 		pr_err("VGA switcheroo: switched nouveau on\n");
 		dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
 		nouveau_pmops_resume(&pdev->dev);
-		drm_kms_helper_poll_enable(dev);
 		dev->switch_power_state = DRM_SWITCH_POWER_ON;
 	} else {
 		pr_err("VGA switcheroo: switched nouveau off\n");
-- 
2.17.1

This won't do anything but potentially make us miss hotplugs. We already
call drm_kms_helper_poll_disable() in
nouveau_pmops_suspend()->nouveau_display_suspend()->nouveau_display_fini()

Signed-off-by: Lyude Paul <lyude at redhat.com>
Reviewed-by: Karol Herbst <karolherbst at gmail.com>
Cc: Lukas Wunner <lukas at wunner.de>
---
 drivers/gpu/drm/nouveau/nouveau_vga.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/nouveau_vga.c
b/drivers/gpu/drm/nouveau/nouveau_vga.c
index 09b1d8151881..8f1ce4833230 100644
--- a/drivers/gpu/drm/nouveau/nouveau_vga.c
+++ b/drivers/gpu/drm/nouveau/nouveau_vga.c
@@ -50,7 +50,6 @@ nouveau_switcheroo_set_state(struct pci_dev *pdev,
 	} else {
 		pr_err("VGA switcheroo: switched nouveau off\n");
 		dev->switch_power_state = DRM_SWITCH_POWER_CHANGING;
-		drm_kms_helper_poll_disable(dev);
 		nouveau_switcheroo_optimus_dsm();
 		nouveau_pmops_suspend(&pdev->dev);
 		dev->switch_power_state = DRM_SWITCH_POWER_OFF;
-- 
2.17.1

Again, this doesn't do anything. drm_kms_helper_poll_enable() will have
already been called in nouveau_display_init()

Signed-off-by: Lyude Paul <lyude at redhat.com>
Reviewed-by: Karol Herbst <karolherbst at gmail.com>
Cc: Lukas Wunner <lukas at wunner.de>
---
 drivers/gpu/drm/nouveau/nouveau_drm.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.c
b/drivers/gpu/drm/nouveau/nouveau_drm.c
index 5fdc1fbe2ee5..04f704b77a3c 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_drm.c
@@ -592,10 +592,8 @@ nouveau_drm_load(struct drm_device *dev, unsigned long
flags)
 		pm_runtime_allow(dev->dev);
 		pm_runtime_mark_last_busy(dev->dev);
 		pm_runtime_put(dev->dev);
-	} else {
-		/* enable polling for external displays */
-		drm_kms_helper_poll_enable(dev);
 	}
+
 	return 0;
 
 fail_dispinit:
-- 
2.17.1