gpu: nvgpu: delete raw chid lookup

This (dangerous) array lookup with no channel references is now unused.

Jira NVGPU-1460

Change-Id: Ic6bdbcf19fc8996bc6ff02a40afe3224bdd5bc27
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1955402
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
(cherry picked from commit 4a53854a92e7c841fa3cb58da062fa756ae7b5c7 in
dev-kernel)
Reviewed-on: https://git-master.nvidia.com/r/2008517
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

2 files changed, 0 insertions, 13 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/fifo_gk20a.c b/drivers/gpu/nvgpu/gk20a/fifo_gk20a.c
index f4a4591d..5e794a55 100644
--- a/drivers/gpu/nvgpu/gk20a/fifo_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/fifo_gk20a.c
@@ -3859,16 +3859,6 @@ u32 gk20a_fifo_get_pbdma_signature(struct gk20a *g)
         return pbdma_signature_hw_valid_f() | pbdma_signature_sw_zero_f();
 }
 
-struct channel_gk20a *gk20a_fifo_channel_from_chid(struct gk20a *g,
-                u32 chid)
-{
-        if (chid != FIFO_INVAL_CHANNEL_ID) {
-                return g->fifo.channel + chid;
-        } else {
-                return NULL;
-        }
-}
-
 static const char * const ccsr_chan_status_str[] = {
         "idle",
         "pending",
diff --git a/drivers/gpu/nvgpu/gk20a/fifo_gk20a.h b/drivers/gpu/nvgpu/gk20a/fifo_gk20a.h
index 21922426..2b646a7b 100644
--- a/drivers/gpu/nvgpu/gk20a/fifo_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/fifo_gk20a.h
@@ -293,9 +293,6 @@ void gk20a_fifo_set_ctx_mmu_error_ch(struct gk20a *g,
 bool gk20a_fifo_error_tsg(struct gk20a *g, struct tsg_gk20a *tsg);
 bool gk20a_fifo_error_ch(struct gk20a *g, struct channel_gk20a *refch);
 
-struct channel_gk20a *gk20a_fifo_channel_from_chid(struct gk20a *g,
-                u32 chid);
-
 void gk20a_fifo_issue_preempt(struct gk20a *g, u32 id, bool is_tsg);
 int gk20a_fifo_set_runlist_interleave(struct gk20a *g,
                                 u32 id,