Any multiplication between GENMASK(31, 0) and a number bigger than 1 will be truncated because of the overflow, if the size of unsigned long is 32 bits.

Replaced GENMASK with GENMASK_ULL to make sure that multiplication will be between 64 bits values.

Cc: stable@vger.kernel.org # 5.15+ Fixes: 514def5dd339 ("phy: nxp-c45-tja11xx: add timestamping support") Signed-off-by: Radu Pirea (OSS) radu-nicolae.pirea@oss.nxp.com --- drivers/net/phy/nxp-c45-tja11xx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/phy/nxp-c45-tja11xx.c b/drivers/net/phy/nxp-c45-tja11xx.c index 27738d1ae9ea..029875a59ff8 100644 --- a/drivers/net/phy/nxp-c45-tja11xx.c +++ b/drivers/net/phy/nxp-c45-tja11xx.c @@ -191,7 +191,7 @@ #define MAX_ID_PS 2260U #define DEFAULT_ID_PS 2000U

-#define PPM_TO_SUBNS_INC(ppb) div_u64(GENMASK(31, 0) * (ppb) * \ +#define PPM_TO_SUBNS_INC(ppb) div_u64(GENMASK_ULL(31, 0) * (ppb) * \ PTP_CLK_PERIOD_100BT1, NSEC_PER_SEC)

#define NXP_C45_SKB_CB(skb) ((struct nxp_c45_skb_cb *)(skb)->cb)