linux-kernel - [PATCH] ethernet: tlan: Convert to use jiffies macro

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Message-ID: <20250807201722468rYsJszSAHXqlVrVHEIuAz@zte.com.cn>
Date: Thu, 7 Aug 2025 20:17:22 +0800 (CST)
From: <zhang.enpei@....com.cn>
To: <chessman@....org>
Cc: <andrew+netdev@...n.ch>, <davem@...emloft.net>, <edumazet@...gle.com>,
        <kuba@...nel.org>, <pabeni@...hat.com>, <netdev@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] ethernet: tlan: Convert to use jiffies macro

From: Zhang Enpei <zhang.enpei@....com.cn>

Use time_after_eq macro instead of using jiffies directly to handle
wraparound.

Signed-off-by: Zhang Enpei <zhang.enpei@....com.cn>
---
 drivers/net/ethernet/ti/tlan.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/ti/tlan.c b/drivers/net/ethernet/ti/tlan.c
index a55b0f951181..78e439834f26 100644
--- a/drivers/net/ethernet/ti/tlan.c
+++ b/drivers/net/ethernet/ti/tlan.c
@@ -1817,7 +1817,6 @@ static void tlan_timer(struct timer_list *t)
 {
        struct tlan_priv        *priv = timer_container_of(priv, t, timer);
        struct net_device       *dev = priv->dev;
-       u32             elapsed;
        unsigned long   flags = 0;

        priv->timer.function = NULL;
@@ -1844,8 +1843,7 @@ static void tlan_timer(struct timer_list *t)
        case TLAN_TIMER_ACTIVITY:
                spin_lock_irqsave(&priv->lock, flags);
                if (priv->timer.function == NULL) {
-                       elapsed = jiffies - priv->timer_set_at;
-                       if (elapsed >= TLAN_TIMER_ACT_DELAY) {
+                       if (time_after_eq(jiffies, priv->timer_set_at + TLAN_TIMER_ACT_DELAY)) {
                                tlan_dio_write8(dev->base_addr,
                                                TLAN_LED_REG, TLAN_LED_LINK);
                        } else  {
-- 
2.25.1