From: Michael Chan <mchan@broadcom.com>
Date: Wed, 14 Dec 2005 05:09:54 +0000 (-0800)
Subject: [TG3]: Fix 5704 single-port mode
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=16fe9d74f14ed74af778c5db7f9129e29916f4a7;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

[TG3]: Fix 5704 single-port mode

If the dual-port 5704 is configured as a single-port device with
only one PCI function, it would trigger a BUG() condition in
tg3_find_5704_peer(). This fixes the problem by returning its
own pdev if the peer cannot be found.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 6b7ab4b7275..a143c18c7bc 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -10443,8 +10443,13 @@ static struct pci_dev * __devinit tg3_find_5704_peer(struct tg3 *tp)
 			break;
 		pci_dev_put(peer);
 	}
-	if (!peer || peer == tp->pdev)
-		BUG();
+	/* 5704 can be configured in single-port mode, set peer to
+	 * tp->pdev in that case.
+	 */
+	if (!peer) {
+		peer = tp->pdev;
+		return peer;
+	}
 
 	/*
 	 * We don't need to keep the refcount elevated; there's no way