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Potentially fix race condition nvGpfifoCreate by waiting on the fence returned by nvioctlChannel_AllocGpfifoEx2

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This commit is contained in:
fincs 2018-09-05 14:00:28 +02:00
parent d718a8dd28
commit 7f4001bec2
2 changed files with 5 additions and 3 deletions
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1
nx/include/switch/nvidia/gpu/gpfifo.h
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@ -2,7 +2,6 @@
typedef struct { typedef struct {
NvChannel* parent; NvChannel* parent;
nvioctl_fence fifo_fence;
} NvGpfifo; } NvGpfifo;
Result nvGpfifoCreate(NvGpfifo* f, NvChannel* parent); Result nvGpfifoCreate(NvGpfifo* f, NvChannel* parent);

7
nx/source/nvidia/gpu/gpfifo.c
View File

@ -24,8 +24,11 @@ Result nvGpfifoCreate(NvGpfifo* f, NvChannel* parent)
{ {
f->parent = parent; f->parent = parent;
return nvioctlChannel_AllocGpfifoEx2( NvFence fence;
parent->fd, DEFAULT_FIFO_ENTRIES, 1, 0, 0, 0, 0, &f->fifo_fence); Result res = nvioctlChannel_AllocGpfifoEx2(parent->fd, DEFAULT_FIFO_ENTRIES, 1, 0, 0, 0, 0, &fence);
if (R_SUCCEEDED(res) && (s32)fence.id >= 0)
nvFenceWait(&fence, -1);
return res;
} }
void nvGpfifoClose(NvGpfifo* f) { void nvGpfifoClose(NvGpfifo* f) {