gpu: nvgpu: skip missing gpc_tpc_count in gr dumps

The gv11b and gm20b gr status reg dumps can get printed so early that
this array is null, so don't access it in that case.

Commit 946f1e635963d20f1e9f8020024c781448bfeb2d ("gpu: nvgpu: don't read
missing gpc_tpc_count in dump") fixed this for gp10b only.

Bug 2049965

Change-Id: I9739fd63b5a153f43000d719a5c509e3be5135cf
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1643692
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

2 files changed, 4 insertions, 4 deletions

diff --git a/drivers/gpu/nvgpu/gm20b/gr_gm20b.c b/drivers/gpu/nvgpu/gm20b/gr_gm20b.c
index a2434320..320aa600 100644
--- a/drivers/gpu/nvgpu/gm20b/gr_gm20b.c
+++ b/drivers/gpu/nvgpu/gm20b/gr_gm20b.c
@@ -946,7 +946,7 @@ int gr_gm20b_dump_gr_status_regs(struct gk20a *g,
                 gk20a_readl(g, gr_pri_gpc0_gpccs_gpc_activity3_r()));
         gk20a_debug_output(o, "NV_PGRAPH_PRI_GPC0_TPC0_TPCCS_TPC_ACTIVITY0: 0x%x\n",
                 gk20a_readl(g, gr_pri_gpc0_tpc0_tpccs_tpc_activity_0_r()));
-        if (gr->gpc_tpc_count[0] == 2)
+        if (gr->gpc_tpc_count && gr->gpc_tpc_count[0] == 2)
                 gk20a_debug_output(o, "NV_PGRAPH_PRI_GPC0_TPC1_TPCCS_TPC_ACTIVITY0: 0x%x\n",
                         gk20a_readl(g, gr_pri_gpc0_tpc1_tpccs_tpc_activity_0_r()));
         gk20a_debug_output(o, "NV_PGRAPH_PRI_GPC0_TPCS_TPCCS_TPC_ACTIVITY0: 0x%x\n",
@@ -961,7 +961,7 @@ int gr_gm20b_dump_gr_status_regs(struct gk20a *g,
                 gk20a_readl(g, gr_pri_gpcs_gpccs_gpc_activity_3_r()));
         gk20a_debug_output(o, "NV_PGRAPH_PRI_GPCS_TPC0_TPCCS_TPC_ACTIVITY0: 0x%x\n",
                 gk20a_readl(g, gr_pri_gpcs_tpc0_tpccs_tpc_activity_0_r()));
-        if (gr->gpc_tpc_count[0] == 2)
+        if (gr->gpc_tpc_count && gr->gpc_tpc_count[0] == 2)
                 gk20a_debug_output(o, "NV_PGRAPH_PRI_GPCS_TPC1_TPCCS_TPC_ACTIVITY0: 0x%x\n",
                         gk20a_readl(g, gr_pri_gpcs_tpc1_tpccs_tpc_activity_0_r()));
         gk20a_debug_output(o, "NV_PGRAPH_PRI_GPCS_TPCS_TPCCS_TPC_ACTIVITY0: 0x%x\n",
diff --git a/drivers/gpu/nvgpu/gv11b/gr_gv11b.c b/drivers/gpu/nvgpu/gv11b/gr_gv11b.c
index 7288284e..61529a01 100644
--- a/drivers/gpu/nvgpu/gv11b/gr_gv11b.c
+++ b/drivers/gpu/nvgpu/gv11b/gr_gv11b.c
@@ -1753,7 +1753,7 @@ int gr_gv11b_dump_gr_status_regs(struct gk20a *g,
                 gk20a_readl(g, gr_pri_gpc0_gpccs_gpc_activity3_r()));
         gk20a_debug_output(o, "NV_PGRAPH_PRI_GPC0_TPC0_TPCCS_TPC_ACTIVITY0: 0x%x\n",
                 gk20a_readl(g, gr_pri_gpc0_tpc0_tpccs_tpc_activity_0_r()));
-        if (gr->gpc_tpc_count[0] == 2)
+        if (gr->gpc_tpc_count && gr->gpc_tpc_count[0] == 2)
                 gk20a_debug_output(o, "NV_PGRAPH_PRI_GPC0_TPC1_TPCCS_TPC_ACTIVITY0: 0x%x\n",
                         gk20a_readl(g, gr_pri_gpc0_tpc1_tpccs_tpc_activity_0_r()));
         gk20a_debug_output(o, "NV_PGRAPH_PRI_GPC0_TPCS_TPCCS_TPC_ACTIVITY0: 0x%x\n",
@@ -1768,7 +1768,7 @@ int gr_gv11b_dump_gr_status_regs(struct gk20a *g,
                 gk20a_readl(g, gr_pri_gpcs_gpccs_gpc_activity_3_r()));
         gk20a_debug_output(o, "NV_PGRAPH_PRI_GPCS_TPC0_TPCCS_TPC_ACTIVITY0: 0x%x\n",
                 gk20a_readl(g, gr_pri_gpcs_tpc0_tpccs_tpc_activity_0_r()));
-        if (gr->gpc_tpc_count[0] == 2)
+        if (gr->gpc_tpc_count && gr->gpc_tpc_count[0] == 2)
                 gk20a_debug_output(o, "NV_PGRAPH_PRI_GPCS_TPC1_TPCCS_TPC_ACTIVITY0: 0x%x\n",
                         gk20a_readl(g, gr_pri_gpcs_tpc1_tpccs_tpc_activity_0_r()));
         gk20a_debug_output(o, "NV_PGRAPH_PRI_GPCS_TPCS_TPCCS_TPC_ACTIVITY0: 0x%x\n",