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misc: ibmasm: Replace timeval with timespec64

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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;
}