diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2017-11-10 16:58:26 +0100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-12-05 02:32:53 +0100 |
| commit | bc8f91665b3f2fd94b80217e433dc90383e75ae4 (patch) | |
| tree | 801a19c305b6d0ea10904a9d680cd5ab0d7b623c /drivers/scsi/3w-sas.c | |
| parent | scsi: 3ware: fix 32-bit time calculations (diff) | |
| download | linux-bc8f91665b3f2fd94b80217e433dc90383e75ae4.tar.xz linux-bc8f91665b3f2fd94b80217e433dc90383e75ae4.zip | |
scsi: 3ware: use 64-bit times for FW time sync
The calculation of the number of seconds since Sunday 00:00:00 overflows
in 2106, meaning that we instead will return the seconds since Wednesday
06:28:16 afterwards.
Using 64-bit time stamps avoids this slight inconsistency, and the
deprecated do_gettimeofday(), replacing it with the simpler
ktime_get_real_seconds().
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Adam Radford <aradford@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/3w-sas.c')
| -rw-r--r-- | drivers/scsi/3w-sas.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/scsi/3w-sas.c b/drivers/scsi/3w-sas.c index c283fdb3cb24..cf9f2a09b47d 100644 --- a/drivers/scsi/3w-sas.c +++ b/drivers/scsi/3w-sas.c @@ -407,11 +407,10 @@ out: static void twl_aen_sync_time(TW_Device_Extension *tw_dev, int request_id) { u32 schedulertime; - struct timeval utc; TW_Command_Full *full_command_packet; TW_Command *command_packet; TW_Param_Apache *param; - u32 local_time; + time64_t local_time; /* Fill out the command packet */ full_command_packet = tw_dev->command_packet_virt[request_id]; @@ -433,10 +432,9 @@ static void twl_aen_sync_time(TW_Device_Extension *tw_dev, int request_id) /* Convert system time in UTC to local time seconds since last Sunday 12:00AM */ - do_gettimeofday(&utc); - local_time = (u32)(utc.tv_sec - (sys_tz.tz_minuteswest * 60)); - schedulertime = local_time - (3 * 86400); - schedulertime = cpu_to_le32(schedulertime % 604800); + local_time = (ktime_get_real_seconds() - (sys_tz.tz_minuteswest * 60)); + div_u64_rem(local_time - (3 * 86400), 604800, &schedulertime); + schedulertime = cpu_to_le32(schedulertime); memcpy(param->data, &schedulertime, sizeof(u32)); |