diff options
| -rw-r--r-- | kernel/gsp_display_engine.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/kernel/gsp_display_engine.c b/kernel/gsp_display_engine.c index ca470f2..73f40c6 100644 --- a/kernel/gsp_display_engine.c +++ b/kernel/gsp_display_engine.c @@ -710,8 +710,14 @@ static void gsp_disp_run(struct nv_vgpu_device *vgpu, struct gsp_disp_chan *ch, hdr = *(u32 *)(disp.pbuf + off); op = hdr >> 29; count = (hdr >> 18) & 0x3ff; - /* NV_UDISP_DMA_METHOD_OFFSET is 15:2 (14 bits). */ - addr = (hdr >> 2) & 0x3fff; + /* + * NV_UDISP_DMA_METHOD_OFFSET is 15:2 and is a DWORD index; + * gsp_disp_method() works in BYTE method addresses (0x200 + * UPDATE, 0x208/0x20c notifier), so shift back to bytes. + * Before this fix the executor compared 0x82 against 0x200 + * and the FINISHED write could never match (r1624/r1625). + */ + addr = ((hdr >> 2) & 0x3fff) << 2; switch (op) { case 0: /* METHOD (incrementing) */ |