All PHC have a negative clkid, while the variations of the system clock use
positive values. The do_caps() function hard codes a check against
CLOCK_REALTIME to avoid executing the PTP_CLOCK_GETCAPS ioctl on a non-PHC
clock.
Extend this to avoid operating on any system clock, allowing for the
potential future use of other variations of the system clock.
Reported-by: Erez <erezge...@gmail.com>
Signed-off-by: Jacob Keller <jacob.e.kel...@intel.com>
---
phc_ctl.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/phc_ctl.c b/phc_ctl.c
index 4344184c364b..d61d27d8f632 100644
--- a/phc_ctl.c
+++ b/phc_ctl.c
@@ -282,8 +282,8 @@ static int do_caps(clockid_t clkid, int cmdc, char *cmdv[])
{
struct ptp_clock_caps caps;
- if (clkid == CLOCK_REALTIME) {
- pr_warning("CLOCK_REALTIME is not a PHC device.");
+ if (clkid >= 0) {
+ pr_warning("The provided clock is not a PHC device.");
return 0;
}
--
2.41.0.1.g9857a21e0017.dirty
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