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| author |  Karol Herbst <kherbst@redhat.com>
| 2021-01-18 18:16:06 +0100 |
|---|---|---|
| committer |  Ben Skeggs <bskeggs@redhat.com>
| 2021-01-29 11:03:11 +1000 |
| commit | dcd602cc5fe2803bf532d407cde24ba0b7808ff3 (patch) | |
| tree | 720bd6a7c681de61ed45c2631090202c908ad61d /drivers | |
| parent | drm/nouveau/dispnv50: Restore pushing of all data. (diff) | |
| download | linux-dcd602cc5fe2803bf532d407cde24ba0b7808ff3.tar.gz linux-dcd602cc5fe2803bf532d407cde24ba0b7808ff3.tar.bz2 linux-dcd602cc5fe2803bf532d407cde24ba0b7808ff3.zip | |
drm/nouveau/svm: fail NOUVEAU_SVM_INIT ioctl on unsupported devices
Fixes a crash when trying to create a channel on e.g. Turing GPUs when
NOUVEAU_SVM_INIT was called before.
Fixes: eeaf06ac1a558 ("drm/nouveau/svm: initial support for shared virtual memory")
Signed-off-by: Karol Herbst <kherbst@redhat.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_svm.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_svm.c b/drivers/gpu/drm/nouveau/nouveau_svm.c index 4f69e4c3dafd..1c3f890377d2 100644 --- a/drivers/gpu/drm/nouveau/nouveau_svm.c +++ b/drivers/gpu/drm/nouveau/nouveau_svm.c @@ -315,6 +315,10 @@ nouveau_svmm_init(struct drm_device *dev, void *data, struct drm_nouveau_svm_init *args = data; int ret; + /* We need to fail if svm is disabled */ + if (!cli->drm->svm) + return -ENOSYS; + /* Allocate tracking for SVM-enabled VMM. */ if (!(svmm = kzalloc(sizeof(*svmm), GFP_KERNEL))) return -ENOMEM; |