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ptp: Split out PTP_SYS_OFFSET_PRECISE ioctl code 

Continue the ptp_ioctl() cleanup by splitting out the PTP_SYS_OFFSET_PRECISE
ioctl code into a helper function.

No functional change intended.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Link: https://patch.msgid.link/20250625115132.986897454@linutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
pull/1279/head
Thomas Gleixner 2025-06-25 13:52:29 +02:00 committed by Jakub Kicinski
parent 47aaa73d25
commit e4355e314c
1 changed files with 29 additions and 24 deletions
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53
drivers/ptp/ptp_chardev.c
View File

@ -290,14 +290,40 @@ static long ptp_enable_pps(struct ptp_clock *ptp, bool enable)
return ops->enable(ops, &req, enable);
}
static long ptp_sys_offset_precise(struct ptp_clock *ptp, void __user *arg)
{
struct ptp_sys_offset_precise precise_offset;
struct system_device_crosststamp xtstamp;
struct timespec64 ts;
int err;
if (!ptp->info->getcrosststamp)
return -EOPNOTSUPP;
err = ptp->info->getcrosststamp(ptp->info, &xtstamp);
if (err)
return err;
memset(&precise_offset, 0, sizeof(precise_offset));
ts = ktime_to_timespec64(xtstamp.device);
precise_offset.device.sec = ts.tv_sec;
precise_offset.device.nsec = ts.tv_nsec;
ts = ktime_to_timespec64(xtstamp.sys_realtime);
precise_offset.sys_realtime.sec = ts.tv_sec;
precise_offset.sys_realtime.nsec = ts.tv_nsec;
ts = ktime_to_timespec64(xtstamp.sys_monoraw);
precise_offset.sys_monoraw.sec = ts.tv_sec;
precise_offset.sys_monoraw.nsec = ts.tv_nsec;
return copy_to_user(arg, &precise_offset, sizeof(precise_offset)) ? -EFAULT : 0;
}
long ptp_ioctl(struct posix_clock_context *pccontext, unsigned int cmd,
unsigned long arg)
{
struct ptp_clock *ptp =
container_of(pccontext->clk, struct ptp_clock, clock);
struct ptp_sys_offset_extended *extoff = NULL;
struct ptp_sys_offset_precise precise_offset;
struct system_device_crosststamp xtstamp;
struct ptp_clock_info *ops = ptp->info;
struct ptp_sys_offset *sysoff = NULL;
struct timestamp_event_queue *tsevq;
@ -340,28 +366,7 @@ long ptp_ioctl(struct posix_clock_context *pccontext, unsigned int cmd,
case PTP_SYS_OFFSET_PRECISE:
case PTP_SYS_OFFSET_PRECISE2:
if (!ptp->info->getcrosststamp) {
err = -EOPNOTSUPP;
break;
}
err = ptp->info->getcrosststamp(ptp->info, &xtstamp);
if (err)
break;
memset(&precise_offset, 0, sizeof(precise_offset));
ts = ktime_to_timespec64(xtstamp.device);
precise_offset.device.sec = ts.tv_sec;
precise_offset.device.nsec = ts.tv_nsec;
ts = ktime_to_timespec64(xtstamp.sys_realtime);
precise_offset.sys_realtime.sec = ts.tv_sec;
precise_offset.sys_realtime.nsec = ts.tv_nsec;
ts = ktime_to_timespec64(xtstamp.sys_monoraw);
precise_offset.sys_monoraw.sec = ts.tv_sec;
precise_offset.sys_monoraw.nsec = ts.tv_nsec;
if (copy_to_user((void __user *)arg, &precise_offset,
sizeof(precise_offset)))
err = -EFAULT;
break;
return ptp_sys_offset_precise(ptp, argptr);
case PTP_SYS_OFFSET_EXTENDED:
case PTP_SYS_OFFSET_EXTENDED2: