gpu: nvgpu: Fix nvgpu_sim_esc_readl MISRA 17.7 violations

MISRA Rule-17.7 requires the return value of all functions to be used.
Fix is either to use the return value or change the function to return
void. This patch contains fix for calls to nvgpu_sim_esc_readl by
changing its return to void and printing an error message instead.

JIRA NVGPU-677

Change-Id: I949bea253dafc316c7dfbf870eb1225b6fc5b9c3
Signed-off-by: Nicolas Benech <nbenech@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1812887
Reviewed-by: Alex Waterman <alexw@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@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/include/nvgpu/sim.h b/drivers/gpu/nvgpu/include/nvgpu/sim.h
index fe8e8ac6..41cee8d0 100644
--- a/drivers/gpu/nvgpu/include/nvgpu/sim.h
+++ b/drivers/gpu/nvgpu/include/nvgpu/sim.h
@@ -36,7 +36,7 @@ struct sim_nvgpu {
         struct nvgpu_mem msg_bfr;
         void (*sim_init_late)(struct gk20a *);
         void (*remove_support)(struct gk20a *);
-        int (*esc_readl)(
+        void (*esc_readl)(
                 struct gk20a *g, char *path, u32 index, u32 *data);
 };
 #ifdef __KERNEL__