gpu: nvgpu: vgpu: fix build errors on qnx

- Declare global functions before reaching the implementation.
- avoid using current (current process).
- assign ch->pid/tgid before using them.

Jira VFND-4870

Change-Id: I688a1b89ef4d5dcf046929eab11d7e523caba0a5
Signed-off-by: Richard Zhao <rizhao@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1687142
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Nirav Patel <nipatel@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/vgpu/fifo_vgpu.c b/drivers/gpu/nvgpu/vgpu/fifo_vgpu.c
index c8a8ce49..d077f329 100644
--- a/drivers/gpu/nvgpu/vgpu/fifo_vgpu.c
+++ b/drivers/gpu/nvgpu/vgpu/fifo_vgpu.c
@@ -89,7 +89,7 @@ int vgpu_channel_alloc_inst(struct gk20a *g, struct channel_gk20a *ch)
         msg.cmd = TEGRA_VGPU_CMD_CHANNEL_ALLOC_HWCTX;
         msg.handle = vgpu_get_handle(g);
         p->id = ch->chid;
-        p->pid = (u64)current->tgid;
+        p->pid = (u64)ch->pid;
         err = vgpu_comm_sendrecv(&msg, sizeof(msg), sizeof(msg));
         if (err || msg.ret) {
                 nvgpu_err(g, "fail");