| commit | 266d3106efbd9ffe92e0b86789299feae0750991 | [log] [tgz] |
|---|---|---|
| author | Yangbo Lu <yangbo.lu@nxp.com> | Tue Mar 23 16:02:29 2021 +0800 |
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | Sat Apr 10 13:36:09 2021 +0200 |
| tree | f8f888d784962a0cc6b21216b45c90fbd1ccecd1 | |
| parent | f135b89e286b5cf6d432860981b71b77b7049594 [diff] |
ptp_qoriq: fix overflow in ptp_qoriq_adjfine() u64 calcalation [ Upstream commit f51d7bf1dbe5522c51c93fe8faa5f4abbdf339cd ] Current calculation for diff of TMR_ADD register value may have 64-bit overflow in this code line, when long type scaled_ppm is large. adj *= scaled_ppm; This patch is to resolve it by using mul_u64_u64_div_u64(). Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>