diff options
| author | Tomeu Vizoso <tomeu.vizoso@collabora.com> | 2019-04-24 15:13:53 +0200 |
|---|---|---|
| committer | Rob Herring <robh@kernel.org> | 2019-05-03 15:34:10 -0500 |
| commit | 6ff408e6dc2072adc3e27d7687dfba19edb05d60 (patch) | |
| tree | 629d44889f4bed11de3f5f0be1d98e3341ae7eb6 /drivers/gpu/drm | |
| parent | ae677a67108726214873c02806f02ec7b470a7cf (diff) | |
| download | linux-6ff408e6dc2072adc3e27d7687dfba19edb05d60.tar.bz2 | |
drm/panfrost: Add sanity checks to submit IOCTL
So userspace can get feedback on any error conditions, instead of going
ahead and things breaking later.
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20190424131355.62817-1-tomeu.vizoso@collabora.com
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/panfrost/panfrost_drv.c | 35 |
1 files changed, 24 insertions, 11 deletions
diff --git a/drivers/gpu/drm/panfrost/panfrost_drv.c b/drivers/gpu/drm/panfrost/panfrost_drv.c index c06af78ab833..0f2863cb8077 100644 --- a/drivers/gpu/drm/panfrost/panfrost_drv.c +++ b/drivers/gpu/drm/panfrost/panfrost_drv.c @@ -172,13 +172,27 @@ static int panfrost_ioctl_submit(struct drm_device *dev, void *data, { struct panfrost_device *pfdev = dev->dev_private; struct drm_panfrost_submit *args = data; - struct drm_syncobj *sync_out; + struct drm_syncobj *sync_out = NULL; struct panfrost_job *job; int ret = 0; + if (!args->jc) + return -EINVAL; + + if (args->requirements && args->requirements != PANFROST_JD_REQ_FS) + return -EINVAL; + + if (args->out_sync > 0) { + sync_out = drm_syncobj_find(file, args->out_sync); + if (!sync_out) + return -ENODEV; + } + job = kzalloc(sizeof(*job), GFP_KERNEL); - if (!job) - return -ENOMEM; + if (!job) { + ret = -ENOMEM; + goto fail_out_sync; + } kref_init(&job->refcount); @@ -190,25 +204,24 @@ static int panfrost_ioctl_submit(struct drm_device *dev, void *data, ret = panfrost_copy_in_sync(dev, file, args, job); if (ret) - goto fail; + goto fail_job; ret = panfrost_lookup_bos(dev, file, args, job); if (ret) - goto fail; + goto fail_job; ret = panfrost_job_push(job); if (ret) - goto fail; + goto fail_job; /* Update the return sync object for the job */ - sync_out = drm_syncobj_find(file, args->out_sync); - if (sync_out) { + if (sync_out) drm_syncobj_replace_fence(sync_out, job->render_done_fence); - drm_syncobj_put(sync_out); - } -fail: +fail_job: panfrost_job_put(job); +fail_out_sync: + drm_syncobj_put(sync_out); return ret; } |