mvumi: 64bit value for seconds_since1970

struct mvumi_hs_page2 stores a "seconds_since1970" field which is of
type u64. It is however, written to, using 'struct timeval' which has
a 32-bit seconds field and whose value will overflow in year 2038.
This patch uses ktime_get_real_seconds() instead since it provides a
64-bit seconds value, which is 2038 safe.

Signed-off-by: Tina Ruchandani <ruchandani.tina@gmail.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/scsi/mvumi.c b/drivers/scsi/mvumi.c
index 3e6b866759fef68dd80eac70ea4e35e56f955f92..02360de6b7e0dd8bd59bf7fe40e3e173d1fe7d0f 100644 (file)
--- a/drivers/scsi/mvumi.c
+++ b/drivers/scsi/mvumi.c
@@ -31,6 +31,7 @@
 #include <linux/spinlock.h>
 #include <linux/interrupt.h>
 #include <linux/delay.h>
+#include <linux/ktime.h>
 #include <linux/blkdev.h>
 #include <linux/io.h>
 #include <scsi/scsi.h>
@@ -858,8 +859,8 @@ static void mvumi_hs_build_page(struct mvumi_hba *mhba,
        struct mvumi_hs_page2 *hs_page2;
        struct mvumi_hs_page4 *hs_page4;
        struct mvumi_hs_page3 *hs_page3;
-       struct timeval time;
-       unsigned int local_time;
+       u64 time;
+       u64 local_time;
 
        switch (hs_header->page_code) {
        case HS_PAGE_HOST_INFO:
@@ -877,9 +878,8 @@ static void mvumi_hs_build_page(struct mvumi_hba *mhba,
                hs_page2->slot_number = 0;
                hs_page2->intr_level = 0;
                hs_page2->intr_vector = 0;
-               do_gettimeofday(&time);
-               local_time = (unsigned int) (time.tv_sec -
-                                               (sys_tz.tz_minuteswest * 60));
+               time = ktime_get_real_seconds();
+               local_time = (time - (sys_tz.tz_minuteswest * 60));
                hs_page2->seconds_since1970 = local_time;
                hs_header->checksum = mvumi_calculate_checksum(hs_header,
                                                hs_header->frame_length);