From: Micah Gruber <micah.gruber@gmail.com>
Date: Sat, 29 Sep 2007 05:42:11 +0000 (-0700)
Subject: Fix a potential NULL pointer dereference in uli526x_interrupt() in drivers/net/tulip... 
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=1f8f4559f8c5829348a010a9e0bbb423310060d1;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

Fix a potential NULL pointer dereference in uli526x_interrupt() in drivers/net/tulip/uli526x.c

This patch fixes an apparent potential null dereference bug where we
dereference dev before a null check.  This patch simply remvoes the
can't-happen test for a null pointer.

Signed-off-by: Micah Gruber <micah.gruber@gmail.com>
Cc: Grant Grundler <grundler@parisc-linux.org>
Acked-by: Jeff Garzik <jeff@garzik.org>
Acked-by: Kyle McMartin <kyle@mcmartin.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
---

diff --git a/drivers/net/tulip/uli526x.c b/drivers/net/tulip/uli526x.c
index e64bde46822e..76e55612430b 100644
--- a/drivers/net/tulip/uli526x.c
+++ b/drivers/net/tulip/uli526x.c
@@ -664,11 +664,6 @@ static irqreturn_t uli526x_interrupt(int irq, void *dev_id)
 	unsigned long ioaddr = dev->base_addr;
 	unsigned long flags;
 
-	if (!dev) {
-		ULI526X_DBUG(1, "uli526x_interrupt() without DEVICE arg", 0);
-		return IRQ_NONE;
-	}
-
 	spin_lock_irqsave(&db->lock, flags);
 	outl(0, ioaddr + DCR7);