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misc: ibmasm: Replace timeval with timespec64 

This patch replaces timeval with timespec64 as 32 bit 'struct timeval'
will not give current time beyond year 2038.

The patch changes the code to use ktime_get_real_ts64() which returns
a 'struct timespec64' instead of do_gettimeofday() which returns a
'struct timeval'

This patch also alters the format strings in sprintf() for now.tv_sec
and now.tv_nsec to incorporate 'long long' on 32 bit architectures and
leading zeroes respectively.

Signed-off-by: Amitoj Kaur Chawla <amitoj1606@gmail.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Amitoj Kaur Chawla 2016-02-10 10:02:02 +05:30 committed by Greg Kroah-Hartman
parent 6cbb097fd3
commit 46d83a8782
1 changed files with 6 additions and 3 deletions
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9
drivers/misc/ibmasm/ibmasm.h
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@ -34,6 +34,7 @@
#include <linux/kref.h>
#include <linux/device.h>
#include <linux/input.h>
#include <linux/time64.h>
/* Driver identification */
#define DRIVER_NAME "ibmasm"
@ -53,9 +54,11 @@ extern int ibmasm_debug;
static inline char *get_timestamp(char *buf)
{
struct timeval now;
do_gettimeofday(&now);
sprintf(buf, "%lu.%lu", now.tv_sec, now.tv_usec);
struct timespec64 now;
ktime_get_real_ts64(&now);
sprintf(buf, "%llu.%.08lu", (long long)now.tv_sec,
now.tv_nsec / NSEC_PER_USEC);
return buf;
}