netdev - [PATCH] tg3: Remove residual error handling in tg3

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Message-ID: <4e7e11f8-03b5-4289-9475-d3b4e105d40a@ancud.ru>
Date: Thu, 7 Mar 2024 22:23:52 +0300
From: Nikita Kiryushin <kiryushin@...ud.ru>
To: Pavan Chebbi <pavan.chebbi@...adcom.com>
Cc: Michael Chan <mchan@...adcom.com>, "David S. Miller"
 <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
 "Rafael J. Wysocki" <rjw@...ysocki.net>, netdev@...r.kernel.org,
 linux-kernel@...r.kernel.org, lvc-project@...uxtesting.org
Subject: [PATCH] tg3: Remove residual error handling in tg3_suspend

As of now, tg3_power_down_prepare always ends with success, but
the error handling code from former tg3_set_power_state call is still here.

Remove (now unreachable) code for simplification.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: c866b7eac073 ("tg3: Do not use legacy PCI power management")
Signed-off-by: Nikita Kiryushin <kiryushin@...ud.ru>
---
  drivers/net/ethernet/broadcom/tg3.c | 26 ++------------------------
  1 file changed, 2 insertions(+), 24 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/tg3.c 
b/drivers/net/ethernet/broadcom/tg3.c
index 04964bbe08cf..400451e10f77 100644
--- a/drivers/net/ethernet/broadcom/tg3.c
+++ b/drivers/net/ethernet/broadcom/tg3.c
@@ -18090,7 +18090,6 @@ static int tg3_suspend(struct device *device)
  {
  	struct net_device *dev = dev_get_drvdata(device);
  	struct tg3 *tp = netdev_priv(dev);
-	int err = 0;
   	rtnl_lock();
  @@ -18114,32 +18113,11 @@ static int tg3_suspend(struct device *device)
  	tg3_flag_clear(tp, INIT_COMPLETE);
  	tg3_full_unlock(tp);
-	err = tg3_power_down_prepare(tp);
-	if (err) {
-		int err2;
-
-		tg3_full_lock(tp, 0);
-
-		tg3_flag_set(tp, INIT_COMPLETE);
-		err2 = tg3_restart_hw(tp, true);
-		if (err2)
-			goto out;
-
-		tg3_timer_start(tp);
-
-		netif_device_attach(dev);
-		tg3_netif_start(tp);
-
-out:
-		tg3_full_unlock(tp);
-
-		if (!err2)
-			tg3_phy_start(tp);
-	}
+	tg3_power_down_prepare(tp);
   unlock:
  	rtnl_unlock();
-	return err;
+	return 0;
  }
   static int tg3_resume(struct device *device)
-- 
2.34.1