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ptp: Allow reassigning calibration pin function 

The ptp pin function programming does not allow calibration pin to change
function. This is problematic on hardware that uses the default calibration
pin for other purposes.

Removing this limitation does not impact calibration if userspace does not
reprogram the calibration pin.

Signed-off-by: Stefan Sørensen <stefan.sorensen@spectralink.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Stefan Sørensen 2014-06-27 12:05:33 +02:00 committed by David S. Miller
parent e0155950f0
commit 72df7a7244
1 changed files with 2 additions and 7 deletions
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9
drivers/ptp/ptp_chardev.c
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@ -86,17 +86,12 @@ int ptp_set_pinfunc(struct ptp_clock *ptp, unsigned int pin,
return -EINVAL;
break;
case PTP_PF_PHYSYNC:
pr_err("sorry, cannot reassign the calibration pin\n");
return -EINVAL;
if (chan != 0)
return -EINVAL;
default:
return -EINVAL;
}
if (pin2->func == PTP_PF_PHYSYNC) {
pr_err("sorry, cannot reprogram the calibration pin\n");
return -EINVAL;
}
if (info->verify(info, pin, func, chan)) {
pr_err("driver cannot use function %u on pin %u\n", func, chan);
return -EOPNOTSUPP;