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rtc: fix coverity defects

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CID 10166554: Unintentional integer overflow defect.
Fixes by typecasting ret of signed 32bit value to signed
64bit value.

Bug 3952896

Change-Id: I35cbc8bf3e9eb906688f9bb27953d1e5bf76633d
Signed-off-by: Shubhi Garg <shgarg@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2864836
Reviewed-by: svcacv <svcacv@nvidia.com>
Reviewed-by: Sachin Nikam <snikam@nvidia.com>
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com>
Reviewed-by: Bibek Basu <bbasu@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
This commit is contained in:
Shubhi Garg
2023-02-28 17:38:42 +05:30
committed by mobile promotions
parent 8a61c9f119
commit 1fa3407928
1 changed files with 4 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/rtc/nvvrs-pseq-rtc.c
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@@ -2,7 +2,7 @@
/*
* RTC driver for NVIDIA Voltage Regulator Power Sequencer
*
* Copyright (C) 2022 NVIDIA CORPORATION. All rights reserved.
* Copyright (C) 2022-2023 NVIDIA CORPORATION. All rights reserved.
*/
#include <linux/i2c.h>
@@ -214,7 +214,7 @@ static int nvvrs_rtc_read_time(struct device *dev, struct rtc_time *tm)
info->drv_data->map[RTC_T3], ret);
goto out;
}
secs |= ret << 24;
secs |= (time64_t)ret << 24;
ret = i2c_smbus_read_byte_data(client, info->drv_data->map[RTC_T2]);
if (ret < 0) {
@@ -222,7 +222,7 @@ static int nvvrs_rtc_read_time(struct device *dev, struct rtc_time *tm)
info->drv_data->map[RTC_T2], ret);
goto out;
}
secs |= ret << 16;
secs |= (time64_t)ret << 16;
ret = i2c_smbus_read_byte_data(client, info->drv_data->map[RTC_T1]);
if (ret < 0) {
@@ -230,7 +230,7 @@ static int nvvrs_rtc_read_time(struct device *dev, struct rtc_time *tm)
info->drv_data->map[RTC_T1], ret);
goto out;
}
secs |= ret << 8;
secs |= (time64_t)ret << 8;
ret = i2c_smbus_read_byte_data(client, info->drv_data->map[RTC_T0]);
if (ret < 0) {