gpu: nvgpu: gv11b: Report LTC errors per slice

Add support to report ltc ecc errors per slice

(1) use new logic to detect subunits
(2) store size of array and check before comparison to prevent out of bounds
 derefencing
(3) use new hashing to prevent collisions or entries with permuted names

bug 2037425

Change-Id: I63b9f0df43b9dceddc1bae17924c4723072f569e
Signed-off-by: David Nieto <dmartineznie@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1620854
GVS: Gerrit_Virtual_Submit
Reviewed-by: Chris Dragan <kdragan@nvidia.com>
Tested-by: Chris Dragan <kdragan@nvidia.com>
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, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/ecc_gk20a.h b/drivers/gpu/nvgpu/gk20a/ecc_gk20a.h
index 0d1ed5df..57eec1e0 100644
--- a/drivers/gpu/nvgpu/gk20a/ecc_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/ecc_gk20a.h
@@ -27,6 +27,7 @@
 struct gk20a_ecc_stat {
         char **names;
         u32 *counters;
+        u32 count;
 #ifdef CONFIG_SYSFS
         struct hlist_node hash_node;
 #endif