iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm/nouveau/svm: fail NOUVEAU_SVM_INIT ioctl on unsupported devices

Browse Source 
commit dcd602cc5fe2803bf532d407cde24ba0b7808ff3 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Karol Herbst 2021-01-18 18:16:06 +01:00 committed by Greg Kroah-Hartman
parent 37ef9b59f4
commit 59546420c5
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/gpu/drm/nouveau/nouveau_svm.c
View File

@ -306,6 +306,10 @@ 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;