From: Miroslav Lichvar Date: Wed, 2 Feb 2022 09:33:56 +0000 (+0100) Subject: ptp: increase maximum adjustment of virtual clocks. X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=f77222d693cc04a881bcd0bded3dd1229c70d7ef;p=linux.git ptp: increase maximum adjustment of virtual clocks. Increase the maximum frequency offset of virtual clocks to 50% to enable faster slewing corrections. This value cannot be represented as scaled ppm when long has 32 bits, but that is already the case for other drivers, even those that provide the adjfine() function, i.e. 32-bit applications are expected to check for the limit. Signed-off-by: Miroslav Lichvar Acked-by: Richard Cochran Cc: Yangbo Lu Signed-off-by: David S. Miller --- diff --git a/drivers/ptp/ptp_vclock.c b/drivers/ptp/ptp_vclock.c index ab1d233173e13..5aa2b32d9dc75 100644 --- a/drivers/ptp/ptp_vclock.c +++ b/drivers/ptp/ptp_vclock.c @@ -84,8 +84,7 @@ static long ptp_vclock_refresh(struct ptp_clock_info *ptp) static const struct ptp_clock_info ptp_vclock_info = { .owner = THIS_MODULE, .name = "ptp virtual clock", - /* The maximum ppb value that long scaled_ppm can support */ - .max_adj = 32767999, + .max_adj = 500000000, .adjfine = ptp_vclock_adjfine, .adjtime = ptp_vclock_adjtime, .gettime64 = ptp_vclock_gettime,