From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pan Bian Subject: [PATCH 1/1 v2] isdn: hisax: set error code on failure Date: Sun, 4 Dec 2016 18:43:31 +0800 Message-ID: <1480848211-15969-1-git-send-email-bianpan201603@163.com> Cc: linux-kernel@vger.kernel.org, Pan Bian To: Sergei Shtylyov , Karsten Keil , netdev@vger.kernel.org Return-path: Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org From: Pan Bian In function hfc4s8s_probe(), the value of return variable err should be negative on failures. However, when the call to request_region() returns NULL, the value of err is 0. This patch fixes the bug, assigning "-EBUSY" to err on the path that request_region() fails. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=188931 Signed-off-by: Pan Bian --- drivers/isdn/hisax/hfc4s8s_l1.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/isdn/hisax/hfc4s8s_l1.c b/drivers/isdn/hisax/hfc4s8s_l1.c index 9600cd7..3172cee 100644 --- a/drivers/isdn/hisax/hfc4s8s_l1.c +++ b/drivers/isdn/hisax/hfc4s8s_l1.c @@ -1499,6 +1499,7 @@ struct hfc4s8s_l1 { printk(KERN_INFO "HFC-4S/8S: failed to request address space at 0x%04x\n", hw->iobase); + err = -EBUSY; goto out; } -- 1.9.1