It's not allowed to have legacy suspend/resume hooked up when
DRIVER_MODESET is set. Doing so results in a warning introduced by the
commit below.
commit e8b4855b5dd3e285d0ec18ed15468025abc1be9a
Author: Gustavo Padovan <gustavo.padovan@xxxxxxxxxxxxxxx>
Date: Thu Aug 13 17:06:39 2015 -0300
drm: WARN_ON if a modeset driver uses legacy suspend/resume helpers
Legacy s/r hooks are only used for shadow-attaching drivers, warn
when a KMS driver tries to use them.
Signed-off-by: Gustavo Padovan <gustavo.padovan@xxxxxxxxxxxxxxx>
Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
Signed-off-by: Patrik Jakobsson <patrik.jakobsson@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_drv.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 1d88745..6e3391c 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -1706,6 +1706,12 @@ static int __init i915_init(void)
if (i915.modeset == 0)
driver.driver_features &= ~DRIVER_MODESET;
+ /* Unhook legacy suspend and resume when KMS is enabled */
+ if (driver.driver_features & DRIVER_MODESET) {
+ driver.suspend = NULL;
+ driver.resume = NULL;
+ }
+
#ifdef CONFIG_VGA_CONSOLE
if (vgacon_text_force() && i915.modeset == -1)
driver.driver_features &= ~DRIVER_MODESET;
--
2.1.4
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