mpt3sas: Remove usage of 'struct timeval'

'struct timeval' will have its tv_sec value overflow on 32-bit systems
in year 2038 and beyond. This patch replaces the use of struct timeval
for computing mpi_request.TimeStamp, and instead uses ktime_t which
provides 64-bit seconds value. The timestamp computed remains
unaffected (milliseconds since Unix epoch).

Signed-off-by: Tina Ruchandani <ruchandani.tina@gmail.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Acked-by: Sathya Prakash <sathya.prakash@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/mpt3sas/mpt3sas_base.c b/drivers/scsi/mpt3sas/mpt3sas_base.c
index 28d85314b3c6f3ea40da7ca87a0cecefa2dd42dc..93d7c28f81622e818e6664279d22acb2b5385cdf 100644 (file)
--- a/drivers/scsi/mpt3sas/mpt3sas_base.c
+++ b/drivers/scsi/mpt3sas/mpt3sas_base.c
@@ -57,6 +57,7 @@
 #include <linux/dma-mapping.h>
 #include <linux/io.h>
 #include <linux/time.h>
+#include <linux/ktime.h>
 #include <linux/kthread.h>
 #include <linux/aer.h>
 
@@ -4387,7 +4388,7 @@ _base_send_ioc_init(struct MPT3SAS_ADAPTER *ioc, int sleep_flag)
        Mpi2IOCInitRequest_t mpi_request;
        Mpi2IOCInitReply_t mpi_reply;
        int i, r = 0;
-       struct timeval current_time;
+       ktime_t current_time;
        u16 ioc_status;
        u32 reply_post_free_array_sz = 0;
        Mpi2IOCInitRDPQArrayEntry *reply_post_free_array = NULL;
@@ -4449,9 +4450,8 @@ _base_send_ioc_init(struct MPT3SAS_ADAPTER *ioc, int sleep_flag)
        /* This time stamp specifies number of milliseconds
         * since epoch ~ midnight January 1, 1970.
         */
-       do_gettimeofday(&current_time);
-       mpi_request.TimeStamp = cpu_to_le64((u64)current_time.tv_sec * 1000 +
-           (current_time.tv_usec / 1000));
+       current_time = ktime_get_real();
+       mpi_request.TimeStamp = cpu_to_le64(ktime_to_ms(current_time));
 
        if (ioc->logging_level & MPT_DEBUG_INIT) {
                __le32 *mfp;