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drm/nouveau/fb/gf100-: Fix 32 bit wraparound in new ram detection

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A missing u64 cast causes a 32-Bit wraparound from
4096 MiB to 0 MiB and therefore total 0 MiB VRAM detected
if card has 4096 Mib per FBP.

Signed-off-by: Mario Kleiner <[email protected]>
Reviewed-by: Karol Herbst <[email protected]>
Signed-off-by: Ben Skeggs <[email protected]>
This commit is contained in:
Mario Kleiner 2017-04-29 06:11:30 +02:00 • committed by Ben Skeggs
commit 271393ba6e
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgf100.c
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@ -589,7 +589,7 @@ gf100_ram_ctor(const struct nvkm_ram_func *func, struct nvkm_fb *fb,
nvkm_debug(subdev, "FBP %d: %4d MiB, %d LTC(s)\n",
fbp, size, ltcs);
lcomm = min(lcomm, (u64)(size / ltcs) << 20);
total += size << 20;
total += (u64) size << 20;
ltcn += ltcs;
} else {
nvkm_debug(subdev, "FBP %d: disabled\n", fbp);