gpu: nvgpu: fix validate_reg_op_offset error check

In validate_reg_op_offset, check for num_offsets == 0,
not for buf_offset_lo == 0, since an offset of 0 is in fact
quite possible.

Bug 1648200

Change-Id: Iea859ce0d0fabe1cc4c67610e8f3033d75e4094a
Signed-off-by: Peter Daifuku <pdaifuku@nvidia.com>
Reviewed-on: http://git-master/r/1122017
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Aingara Paramakuru <aparamakuru@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/regops_gk20a.c b/drivers/gpu/nvgpu/gk20a/regops_gk20a.c
index e6162af2..a9c7fdfd 100644
--- a/drivers/gpu/nvgpu/gk20a/regops_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/regops_gk20a.c
@@ -665,7 +665,7 @@ static int validate_reg_op_offset(struct dbg_session_gk20a *dbg_s,
                                 return -EINVAL;
                         }
                 }
-                if (!buf_offset_lo) {
+                if (!num_offsets) {
                         op->status |= REGOP(STATUS_INVALID_OFFSET);
                         return -EINVAL;
                 }