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gpu: nvgpu: expose device creation

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Allow gk20a_create_device() to happen outside the main ioctl logic and
rename it to have the modern nvgpu_ prefix. Add a separate function to
do cdev allocation and refactor the existing two callers slightly to
avoid repetition on the cdev struct initialization.

As a side effect, this modification fixes the error path that used to
not return an error if adding a device fails and also leaked the
allocated cdev memory.

Jira NVGPU-6788

Change-Id: Ia1f018b88d78fafdfcf4e95f6aa66e2368e58974
Signed-off-by: Konsta Hölttä <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2674426
Reviewed-by: Alex Waterman <alexw@nvidia.com>
GVS: Gerrit_Virtual_Submit
This commit is contained in:
Konsta Hölttä
2022-02-23 12:09:39 +02:00
committed by mobile promotions
parent 82df5b0219
commit f11ca4c300
2 changed files with 48 additions and 31 deletions
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6
drivers/gpu/nvgpu/os/linux/ioctl.h
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@@ -75,4 +75,10 @@ unsigned int nvgpu_allocate_cdev_minor(struct gk20a *g);
struct gk20a *nvgpu_get_gk20a_from_cdev(struct nvgpu_cdev *cdev);
u32 nvgpu_get_gpu_instance_id_from_cdev(struct gk20a *g, struct nvgpu_cdev *cdev);
int nvgpu_create_device(
struct device *dev, int devno,
const char *cdev_name,
struct cdev *cdev, struct device **out,
struct nvgpu_class *class);
#endif