gpu: nvgpu: Fix nvgpu_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_readl.

JIRA NVGPU-677

Change-Id: I432197cca67a10281dfe407aa9ce2dd8120030f0
Signed-off-by: Nicolas Benech <nbenech@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1807528
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Alex Waterman <alexw@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/gp106/mclk_gp106.c b/drivers/gpu/nvgpu/gp106/mclk_gp106.c
index 36092a1a..6a49e83b 100644
--- a/drivers/gpu/nvgpu/gp106/mclk_gp106.c
+++ b/drivers/gpu/nvgpu/gp106/mclk_gp106.c
@@ -3371,8 +3371,8 @@ int gp106_mclk_change(struct gk20a *g, u16 val)
         if (speed == GP106_MCLK_HIGH_SPEED) {
                 gk20a_writel(g, 0x132000, 0x98010000);
                 /* Introduce delay */
-                gk20a_readl(g, 0x132000);
-                gk20a_readl(g, 0x132000);
+                (void) gk20a_readl(g, 0x132000);
+                (void) gk20a_readl(g, 0x132000);
         }
 
         gk20a_writel(g, 0x137300, 0x20000103);