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nouveau/instmem: handle iomapping already existing

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Turns out sashiko was right, and I should protect this properly

Fixes: 34e27b9055 ("nouveau/instmem: use iomapping interface for instmem handling")
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patch.msgid.link/20260825030615.3464436-1-airlied@gmail.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
This commit is contained in:
Dave Airlie 2026-08-25 13:06:15 +10:00 committed by Danilo Krummrich
parent 38a62306c4
commit deced5fa01
1 changed files with 3 additions and 0 deletions
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drivers/gpu/drm/nouveau/nvkm/subdev/instmem/nv50.c
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@ -195,6 +195,9 @@ check_io_mapping(struct nv50_instmem *imem)
{
struct nvkm_device *device = imem->base.subdev.device;
if (imem->iomap.size)
return true;
return io_mapping_init_wc(&imem->iomap,
device->func->resource_addr(device, NVKM_BAR2_INST),
device->func->resource_size(device, NVKM_BAR2_INST)) != NULL;