diff options
Diffstat (limited to 'drivers/ptp/ptp_chardev.c')
| -rw-r--r-- | drivers/ptp/ptp_chardev.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/ptp/ptp_chardev.c b/drivers/ptp/ptp_chardev.c index 4380e6ddb849..4bf421765d03 100644 --- a/drivers/ptp/ptp_chardev.c +++ b/drivers/ptp/ptp_chardev.c @@ -162,6 +162,7 @@ long ptp_ioctl(struct posix_clock_context *pccontext, unsigned int cmd, { struct ptp_clock *ptp = container_of(pccontext->clk, struct ptp_clock, clock); + unsigned int i, pin_index, supported_extts_flags; struct ptp_sys_offset_extended *extoff = NULL; struct ptp_sys_offset_precise precise_offset; struct system_device_crosststamp xtstamp; @@ -172,7 +173,6 @@ long ptp_ioctl(struct posix_clock_context *pccontext, unsigned int cmd, struct ptp_clock_request req; struct ptp_clock_caps caps; struct ptp_clock_time *pct; - unsigned int i, pin_index; struct ptp_pin_desc pd; struct timespec64 ts; int enable, err = 0; @@ -240,6 +240,18 @@ long ptp_ioctl(struct posix_clock_context *pccontext, unsigned int cmd, err = -EINVAL; break; } + supported_extts_flags = ptp->info->supported_extts_flags; + /* The PTP_ENABLE_FEATURE flag is always supported. */ + supported_extts_flags |= PTP_ENABLE_FEATURE; + /* If the driver does not support strictly checking flags, the + * PTP_RISING_EDGE and PTP_FALLING_EDGE flags are merely + * hints which are not enforced. + */ + if (!(supported_extts_flags & PTP_STRICT_FLAGS)) + supported_extts_flags |= PTP_EXTTS_EDGES; + /* Reject unsupported flags */ + if (req.extts.flags & ~supported_extts_flags) + return -EOPNOTSUPP; req.type = PTP_CLK_REQ_EXTTS; enable = req.extts.flags & PTP_ENABLE_FEATURE ? 1 : 0; if (mutex_lock_interruptible(&ptp->pincfg_mux)) @@ -312,6 +324,8 @@ long ptp_ioctl(struct posix_clock_context *pccontext, unsigned int cmd, err = -EINVAL; break; } + if (req.perout.flags & ~ptp->info->supported_perout_flags) + return -EOPNOTSUPP; req.type = PTP_CLK_REQ_PEROUT; enable = req.perout.period.sec || req.perout.period.nsec; if (mutex_lock_interruptible(&ptp->pincfg_mux)) |