linux-kernel - [PATCH] pci: Skip id checking if no id is passed

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Message-ID: <4CE436C0.5050802@kernel.org>
Date:	Wed, 17 Nov 2010 12:10:40 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	Jesse Barnes <jbarnes@...tuousgeek.org>
CC:	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH] pci: Skip id checking if no id is passed


Will get warning when pci stub driver is built-in kenel like:
pci-stub: invalid id string ""

So stop early if no id is passed.

Signed-off-by: Yinghai Lu <yinghai@...nel.org>

---
 drivers/pci/pci-stub.c |    4 ++++
 1 file changed, 4 insertions(+)

Index: linux-2.6/drivers/pci/pci-stub.c
===================================================================
--- linux-2.6.orig/drivers/pci/pci-stub.c
+++ linux-2.6/drivers/pci/pci-stub.c
@@ -47,6 +47,10 @@ static int __init pci_stub_init(void)
 	if (rc)
 		return rc;
 
+	/* no ids passed actually */
+	if (ids[0] == '\0')
+		return 0;
+
 	/* add ids specified in the module parameter */
 	p = ids;
 	while ((id = strsep(&p, ","))) {
--
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