drm/nvc0/vram: skip disabled PBFB subunits
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nvc0_vram.c b/drivers/gpu/drm/nouveau/nvc0_vram.c
index 041ff2b..ce984d5 100644
--- a/drivers/gpu/drm/nouveau/nvc0_vram.c
+++ b/drivers/gpu/drm/nouveau/nvc0_vram.c
@@ -110,22 +110,26 @@
u32 bsize = nv_rd32(dev, 0x10f20c);
u32 offset, length;
bool uniform = true;
- int ret, i;
+ int ret, part;
NV_DEBUG(dev, "0x100800: 0x%08x\n", nv_rd32(dev, 0x100800));
NV_DEBUG(dev, "parts 0x%08x bcast_mem_amount 0x%08x\n", parts, bsize);
/* read amount of vram attached to each memory controller */
- for (i = 0; i < parts; i++) {
- u32 psize = nv_rd32(dev, 0x11020c + (i * 0x1000));
+ part = 0;
+ while (parts) {
+ u32 psize = nv_rd32(dev, 0x11020c + (part++ * 0x1000));
+ if (psize == 0)
+ continue;
+ parts--;
+
if (psize != bsize) {
if (psize < bsize)
bsize = psize;
uniform = false;
}
- NV_DEBUG(dev, "%d: mem_amount 0x%08x\n", i, psize);
-
+ NV_DEBUG(dev, "%d: mem_amount 0x%08x\n", part, psize);
dev_priv->vram_size += (u64)psize << 20;
}