linux-kernel - [PATCH] net: tulip: delete useless tests on netdev

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Message-Id: <1388680129-13661-1-git-send-email-Julia.Lawall@lip6.fr>
Date:	Thu,  2 Jan 2014 17:28:49 +0100
From:	Julia Lawall <Julia.Lawall@...6.fr>
To:	Grant Grundler <grundler@...isc-linux.org>
Cc:	kernel-janitors@...r.kernel.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] net: tulip: delete useless tests on netdev_priv

From: Julia Lawall <Julia.Lawall@...6.fr>

Netdev_priv performs an addition, not a pointer dereference, so it seems
quit unlikely that its result would ever be NULL.

A semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
statement S;
@@

- if (!netdev_priv(...)) S
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>

---
 drivers/net/ethernet/dec/tulip/uli526x.c |    6 ------
 1 file changed, 6 deletions(-)

diff --git a/drivers/net/ethernet/dec/tulip/uli526x.c b/drivers/net/ethernet/dec/tulip/uli526x.c
index a5397b1..aa4ee38 100644
--- a/drivers/net/ethernet/dec/tulip/uli526x.c
+++ b/drivers/net/ethernet/dec/tulip/uli526x.c
@@ -1192,9 +1192,6 @@ static int uli526x_suspend(struct pci_dev *pdev, pm_message_t state)
 
 	ULI526X_DBUG(0, "uli526x_suspend", 0);
 
-	if (!netdev_priv(dev))
-		return 0;
-
 	pci_save_state(pdev);
 
 	if (!netif_running(dev))
@@ -1228,9 +1225,6 @@ static int uli526x_resume(struct pci_dev *pdev)
 
 	ULI526X_DBUG(0, "uli526x_resume", 0);
 
-	if (!netdev_priv(dev))
-		return 0;
-
 	pci_restore_state(pdev);
 
 	if (!netif_running(dev))

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