netdev - [PATCH] fsl/fman: fix dtsec_set_tx_pause

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Date:	Sun, 13 Mar 2016 21:14:43 +0200
From:	<igal.liberman@...escale.com>
To:	<netdev@...r.kernel.org>
CC:	<scottwood@...escale.com>, <madalin.bucur@...escale.com>,
	Igal Liberman <igal.liberman@...escale.com>
Subject: [PATCH] fsl/fman: fix dtsec_set_tx_pause_frames

From: Igal Liberman <igal.liberman@...escale.com>

Fix a bug introduced in e06a03b (fsl/fman: fix the pause_time test)
When pause_time is set to '0' - pause frames are disabled and
there's no need to apply dTSEC-A003 Errata workaround.

Signed-off-by: Igal Liberman <igal.liberman@...escale.com>
---
 drivers/net/ethernet/freescale/fman/fman_dtsec.c |    7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/freescale/fman/fman_dtsec.c b/drivers/net/ethernet/freescale/fman/fman_dtsec.c
index 7c92eb8..c88918c 100644
--- a/drivers/net/ethernet/freescale/fman/fman_dtsec.c
+++ b/drivers/net/ethernet/freescale/fman/fman_dtsec.c
@@ -932,15 +932,14 @@ int dtsec_set_tx_pause_frames(struct fman_mac *dtsec,
 	if (!is_init_done(dtsec->dtsec_drv_param))
 		return -EINVAL;
 
-	/* FM_BAD_TX_TS_IN_B_2_B_ERRATA_DTSEC_A003 Errata workaround */
-	if (dtsec->fm_rev_info.major == 2)
-		if (pause_time <= 320) {
+	if (pause_time) {
+		/* FM_BAD_TX_TS_IN_B_2_B_ERRATA_DTSEC_A003 Errata workaround */
+		if (dtsec->fm_rev_info.major == 2 && pause_time <= 320) {
 			pr_warn("pause-time: %d illegal.Should be > 320\n",
 				pause_time);
 			return -EINVAL;
 		}
 
-	if (pause_time) {
 		ptv = ioread32be(&regs->ptv);
 		ptv &= PTV_PTE_MASK;
 		ptv |= pause_time & PTV_PT_MASK;
-- 
1.7.9.5