gpu: nvgpu: MISRA 10.3 Conversions to/from char

MISRA Rule 10.3 states that the value of an expression shall not be
assigned to an object with a narrower essential type or of a
different essential type category.

We have cases where we are converting to/from char and non char types
and this fix 10.3 violations resulting from these conversions.

This also fix violations in conversions between s8 and non-s8 types
as s8 can be typedefed as char.

Jira NVGPU-1010

Change-Id: I150dd633eb7575de9ea2bedd598b7af74d1fcbd9
Signed-off-by: Sai Nikhil <snikhil@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1801613
Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com>
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Alex Waterman <alexw@nvidia.com>
Reviewed-by: Adeel Raza <araza@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/gpu/nvgpu/clk/clk_vin.c b/drivers/gpu/nvgpu/clk/clk_vin.c
index 67eeffd5..d57522af 100644
--- a/drivers/gpu/nvgpu/clk/clk_vin.c
+++ b/drivers/gpu/nvgpu/clk/clk_vin.c
@@ -102,8 +102,8 @@ u32 clk_avfs_get_vin_cal_fuse_v20(struct gk20a *g,
         if (pvinobjs->calibration_rev_vbios == g->ops.fuse.read_vin_cal_fuse_rev(g)) {
                 BOARDOBJGRP_FOR_EACH(&(pvinobjs->super.super),
                                      struct vin_device_v20 *, pvindev, i) {
-                        gain = 0;
-                        offset = 0;
+                        gain = '\0';
+                        offset = '\0';
                         pvindev = (struct vin_device_v20 *)CLK_GET_VIN_DEVICE(pvinobjs, i);
                         status = g->ops.fuse.read_vin_cal_gain_offset_fuse(g,
                                         pvindev->super.id, &gain, &offset);
@@ -268,7 +268,7 @@ static u32 devinit_get_vin_device_table(struct gk20a *g,
         u8 *vin_tbl_entry_ptr = NULL;
         u32 index = 0;
         u32 slope=0, intercept=0;
-        s8 offset=0, gain=0;
+        s8 offset='\0', gain='\0';
         struct vin_device *pvin_dev;
         u32 cal_type;