netdev - [PATCH net] cxgb4/ptp: pass the sign of offset delta in FW CMD

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Message-Id: <20200324114000.5985-1-rajur@chelsio.com>
Date:   Tue, 24 Mar 2020 17:10:00 +0530
From:   Raju Rangoju <rajur@...lsio.com>
To:     davem@...emloft.net, netdev@...r.kernel.org
Cc:     vishal@...lsio.com, nirranjan@...lsio.com, dt@...lsio.com,
        rajur@...lsio.com
Subject: [PATCH net] cxgb4/ptp: pass the sign of offset delta in FW CMD

cxgb4_ptp_fineadjtime() doesn't pass the signedness of offset delta
in FW_PTP_CMD. Fix it by passing correct sign.

Signed-off-by: Raju Rangoju <rajur@...lsio.com>
---
 drivers/net/ethernet/chelsio/cxgb4/cxgb4_ptp.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_ptp.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_ptp.c
index 58a039c3224a..af1f40cbccc8 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_ptp.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_ptp.c
@@ -246,6 +246,9 @@ static int  cxgb4_ptp_fineadjtime(struct adapter *adapter, s64 delta)
 			     FW_PTP_CMD_PORTID_V(0));
 	c.retval_len16 = cpu_to_be32(FW_CMD_LEN16_V(sizeof(c) / 16));
 	c.u.ts.sc = FW_PTP_SC_ADJ_FTIME;
+	c.u.ts.sign = (delta < 0) ? 1 : 0;
+	if (delta < 0)
+		delta = -delta;
 	c.u.ts.tm = cpu_to_be64(delta);
 
 	err = t4_wr_mbox(adapter, adapter->mbox, &c, sizeof(c), NULL);
-- 
2.9.5