From: Karol Kolacinski Date: Thu, 4 Nov 2021 13:52:11 +0000 (+0100) Subject: ice: Use div64_u64 instead of div_u64 in adjfine X-Git-Tag: baikal/mips/sdk6.1~6857^2~15^2~1 X-Git-Url: https://git.baikalelectronics.ru/sdk/?a=commitdiff_plain;h=24c9c1aceedccb8c336bd7688472018c80d12ad6;p=kernel.git ice: Use div64_u64 instead of div_u64 in adjfine Change the division in ice_ptp_adjfine from div_u64 to div64_u64. div_u64 is used when the divisor is 32 bit but in this case incval is 64 bit and it caused incorrect calculations and incval adjustments. Fixes: 6e97854adf8d ("ice: register 1588 PTP clock device object for E810 devices") Signed-off-by: Karol Kolacinski Tested-by: Gurucharan G Signed-off-by: Tony Nguyen --- diff --git a/drivers/net/ethernet/intel/ice/ice_ptp.c b/drivers/net/ethernet/intel/ice/ice_ptp.c index bf7247c6f58e2..ad7cabe7932f0 100644 --- a/drivers/net/ethernet/intel/ice/ice_ptp.c +++ b/drivers/net/ethernet/intel/ice/ice_ptp.c @@ -705,7 +705,7 @@ static int ice_ptp_adjfine(struct ptp_clock_info *info, long scaled_ppm) scaled_ppm = -scaled_ppm; } - while ((u64)scaled_ppm > div_u64(U64_MAX, incval)) { + while ((u64)scaled_ppm > div64_u64(U64_MAX, incval)) { /* handle overflow by scaling down the scaled_ppm and * the divisor, losing some precision */