diff options
| author | Shirish S <shirish.s@amd.com> | 2018-07-18 11:06:26 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2018-07-20 22:23:33 +0300 |
| commit | 4d3b9ae50ea03d3295fc9b5f5c88f49fcd0e99f9 (patch) | |
| tree | 0bbeaede3393475b54e3a857d1020cbe13fda18c /drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | |
| parent | 1bc460a45b9746db4b0e6be46c122c377120aace (diff) | |
| download | linux-4d3b9ae50ea03d3295fc9b5f5c88f49fcd0e99f9.tar.xz | |
drm/amdgpu: lock and unlock console only for amdgpu_fbdev_set_suspend [V5]
[Why]
While the console_lock is held, console output will be buffered, till
its unlocked it wont be emitted, hence its ideal to unlock sooner to enable
debugging/detecting/fixing of any issue in the remaining sequence of events
in resume path.
The concern here is about consoles other than fbcon on the device,
e.g. a serial console
[How]
This patch restructures the console_lock, console_unlock around
amdgpu_fbdev_set_suspend() and moves this new block appropriately.
V2: Kept amdgpu_fbdev_set_suspend after pci_set_power_state
V3: Updated the commit message to clarify the real concern that this patch
addresses.
V4: code clean-up.
V5: fixed return value
Signed-off-by: Shirish S <shirish.s@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_device.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 22 |
1 files changed, 7 insertions, 15 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index 9b8264c761f7..fddf54773a6e 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -2720,15 +2720,12 @@ int amdgpu_device_resume(struct drm_device *dev, bool resume, bool fbcon) if (dev->switch_power_state == DRM_SWITCH_POWER_OFF) return 0; - if (fbcon) - console_lock(); - if (resume) { pci_set_power_state(dev->pdev, PCI_D0); pci_restore_state(dev->pdev); r = pci_enable_device(dev->pdev); if (r) - goto unlock; + return r; } /* post card */ @@ -2741,14 +2738,14 @@ int amdgpu_device_resume(struct drm_device *dev, bool resume, bool fbcon) r = amdgpu_device_ip_resume(adev); if (r) { DRM_ERROR("amdgpu_device_ip_resume failed (%d).\n", r); - goto unlock; + return r; } amdgpu_fence_driver_resume(adev); r = amdgpu_device_ip_late_init(adev); if (r) - goto unlock; + return r; /* pin cursors */ list_for_each_entry(crtc, &dev->mode_config.crtc_list, head) { @@ -2783,6 +2780,9 @@ int amdgpu_device_resume(struct drm_device *dev, bool resume, bool fbcon) } drm_modeset_unlock_all(dev); } + console_lock(); + amdgpu_fbdev_set_suspend(adev, 0); + console_unlock(); } drm_kms_helper_poll_enable(dev); @@ -2806,15 +2806,7 @@ int amdgpu_device_resume(struct drm_device *dev, bool resume, bool fbcon) #ifdef CONFIG_PM dev->dev->power.disable_depth--; #endif - - if (fbcon) - amdgpu_fbdev_set_suspend(adev, 0); - -unlock: - if (fbcon) - console_unlock(); - - return r; + return 0; } /** |