[Nouveau] [bug report] drm/nouveau/gsp/r535: add support for booting GSP-RM

[Dan Carpenter]

On Tue, Nov 07, 2023 at 05:34:43PM +0300, Dan Carpenter wrote:
> Hello Ben Skeggs,
> 
> The patch 176fdcbddfd2: "drm/nouveau/gsp/r535: add support for
> booting GSP-RM" from Sep 19, 2023 (linux-next), leads to the
> following Smatch static checker warning:
> 
> 	drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.c:1016 r535_gsp_rpc_unloading_guest_driver()
> 	warn: 'rpc' isn't an ERR_PTR

Some related bugs are:

drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.c:1058 r535_gsp_rpc_set_registry() warn: 'rpc' isn't an ERR_PTR
drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.c:1273 r535_gsp_rpc_set_system_info() warn: 'info' isn't an ERR_PTR
drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.c:611 r535_gsp_rpc_rm_alloc_get() warn: 'rpc' isn't an ERR_PTR
drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.c:667 r535_gsp_rpc_rm_ctrl_get() warn: 'rpc' isn't an ERR_PTR
drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.c:692 r535_gsp_rpc_get() warn: 'rpc' is an error pointer or valid
drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.c:695 r535_gsp_rpc_get() error: 'rpc' dereferencing possible ERR_PTR()
drivers/gpu/drm/nouveau/nvkm/subdev/gsp/r535.c:735 r535_gsp_rpc_push() warn: 'next' isn't an ERR_PTR
drivers/gpu/drm/nouveau/nvkm/subdev/instmem/r535.c:69 fbsr_memlist() warn: 'rpc' isn't an ERR_PTR

regards,
dan carpenter