diff options
| author | Steven Price <steven.price@arm.com> | 2020-10-30 17:58:33 +0300 |
|---|---|---|
| committer | Boris Brezillon <boris.brezillon@collabora.com> | 2020-11-03 11:43:57 +0300 |
| commit | 876b15d2c88d8c005f1aebeaa23f1e448d834757 (patch) | |
| tree | 196c794b5b5919a51d1b785d359a0d238c8cd1e0 /drivers/gpu | |
| parent | 7d2d6d01293e6d9b42a6cb410be4158571f7fe9d (diff) | |
| download | linux-876b15d2c88d8c005f1aebeaa23f1e448d834757.tar.xz | |
drm/panfrost: Fix module unload
When unloading the call to pm_runtime_put_sync_suspend() will attempt to
turn the GPU cores off, however panfrost_device_fini() will have turned
the clocks off. This leads to the hardware locking up.
Instead don't call pm_runtime_put_sync_suspend() and instead simply mark
the device as suspended using pm_runtime_set_suspended(). And also
include this on the error path in panfrost_probe().
Fixes: aebe8c22a912 ("drm/panfrost: Fix possible suspend in panfrost_remove")
Signed-off-by: Steven Price <steven.price@arm.com>
Reviewed-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201030145833.29006-1-steven.price@arm.com
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/panfrost/panfrost_drv.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/gpu/drm/panfrost/panfrost_drv.c b/drivers/gpu/drm/panfrost/panfrost_drv.c index 37d4cb7a5491..0fc084110e5b 100644 --- a/drivers/gpu/drm/panfrost/panfrost_drv.c +++ b/drivers/gpu/drm/panfrost/panfrost_drv.c @@ -626,6 +626,7 @@ static int panfrost_probe(struct platform_device *pdev) err_out1: pm_runtime_disable(pfdev->dev); panfrost_device_fini(pfdev); + pm_runtime_set_suspended(pfdev->dev); err_out0: drm_dev_put(ddev); return err; @@ -640,9 +641,9 @@ static int panfrost_remove(struct platform_device *pdev) panfrost_gem_shrinker_cleanup(ddev); pm_runtime_get_sync(pfdev->dev); - panfrost_device_fini(pfdev); - pm_runtime_put_sync_suspend(pfdev->dev); pm_runtime_disable(pfdev->dev); + panfrost_device_fini(pfdev); + pm_runtime_set_suspended(pfdev->dev); drm_dev_put(ddev); return 0; |