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Commit cd4bb2a3 authored by Shalom Toledo's avatar Shalom Toledo Committed by David S. Miller
Browse files

mlxsw: spectrum_ptp: Fix compilation on 32-bit ARM 



Compilation on 32-bit ARM fails after commit 992aa864 ("mlxsw:
spectrum_ptp: Add implementation for physical hardware clock operations")
because of 64-bit division:

arm-linux-gnueabi-ld:
drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.o: in function
`mlxsw_sp1_ptp_phc_settime': spectrum_ptp.c:(.text+0x39c): undefined
reference to `__aeabi_uldivmod'

Fix by using div_u64().

Fixes: 992aa864 ("mlxsw: spectrum_ptp: Add implementation for physical hardware clock operations")
Signed-off-by: default avatarShalom Toledo <shalomt@mellanox.com>
Reviewed-by: default avatarIdo Schimmel <idosch@mellanox.com>
Reported-by: default avatarNathan Chancellor <natechancellor@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 13091aa3

drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.c

+2 −3
Original line number Diff line number Diff line
@@ -81,13 +81,12 @@ static int 
mlxsw_sp1_ptp_phc_settime(struct mlxsw_sp_ptp_clock *clock, u64 nsec)

{

	struct mlxsw_core *mlxsw_core = clock->core;

	u64 next_sec, next_sec_in_nsec, cycles;

	char mtutc_pl[MLXSW_REG_MTUTC_LEN];

	char mtpps_pl[MLXSW_REG_MTPPS_LEN];

	u64 next_sec_in_nsec, cycles;

	u32 next_sec;

	int err;



	next_sec = nsec / NSEC_PER_SEC + 1;

	next_sec = div_u64(nsec, NSEC_PER_SEC) + 1;

	next_sec_in_nsec = next_sec * NSEC_PER_SEC;



	spin_lock(&clock->lock);