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| author | Eric Anholt <eric@anholt.net> | 2019-02-20 13:03:42 -0800 |
|---|---|---|
| committer | Eric Anholt <eric@anholt.net> | 2019-04-01 10:44:34 -0700 |
| commit | cb74f6ee8e3a00e85d53697d5d84ec21d416e5ef (patch) | |
| tree | 7a15f86cfbe5c2e06cdb3777ab7df3cfb5575d72 /drivers/gpu/drm/vc4/vc4_gem.c | |
| parent | 13f0ec3417c566ae29603eb5d18f4b7d581ade52 (diff) | |
| download | linux-cb74f6ee8e3a00e85d53697d5d84ec21d416e5ef.tar.gz linux-cb74f6ee8e3a00e85d53697d5d84ec21d416e5ef.tar.bz2 linux-cb74f6ee8e3a00e85d53697d5d84ec21d416e5ef.zip | |
drm/vc4: Add helpers for pm get/put.
This makes sure the vc4_reset doesn't hit an obscure race with the
GET_PARAM ioctl, fixes a decrement outside of the lock, and prevents
future code from making mistakes with the weird return value of
pm_runtime_get_sync().
Signed-off-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20190220210343.28157-6-eric@anholt.net
Reviewed-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Diffstat (limited to 'drivers/gpu/drm/vc4/vc4_gem.c')
| -rw-r--r-- | drivers/gpu/drm/vc4/vc4_gem.c | 21 |
1 files changed, 5 insertions, 16 deletions
diff --git a/drivers/gpu/drm/vc4/vc4_gem.c b/drivers/gpu/drm/vc4/vc4_gem.c index 5ee5bf7fedf7..5e9496d477bf 100644 --- a/drivers/gpu/drm/vc4/vc4_gem.c +++ b/drivers/gpu/drm/vc4/vc4_gem.c @@ -964,12 +964,7 @@ vc4_complete_exec(struct drm_device *dev, struct vc4_exec_info *exec) /* Release the reference we had on the perf monitor. */ vc4_perfmon_put(exec->perfmon); - mutex_lock(&vc4->power_lock); - if (--vc4->power_refcount == 0) { - pm_runtime_mark_last_busy(&vc4->v3d->pdev->dev); - pm_runtime_put_autosuspend(&vc4->v3d->pdev->dev); - } - mutex_unlock(&vc4->power_lock); + vc4_v3d_pm_put(vc4); kfree(exec); } @@ -1143,17 +1138,11 @@ vc4_submit_cl_ioctl(struct drm_device *dev, void *data, return -ENOMEM; } - mutex_lock(&vc4->power_lock); - if (vc4->power_refcount++ == 0) { - ret = pm_runtime_get_sync(&vc4->v3d->pdev->dev); - if (ret < 0) { - mutex_unlock(&vc4->power_lock); - vc4->power_refcount--; - kfree(exec); - return ret; - } + ret = vc4_v3d_pm_get(vc4); + if (ret) { + kfree(exec); + return ret; } - mutex_unlock(&vc4->power_lock); exec->args = args; INIT_LIST_HEAD(&exec->unref_list); |