From: Arvind Yadav <arvind.yadav.cs@gmail.com>
Date: Thu, 16 Nov 2017 04:27:19 +0000 (+0530)
Subject: isdn: hisax: Fix pnp_irq's error checking for avm_pnp_setup
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=b0927bd98f2bdb5687ff038ee5bb9ecaa7a27dfa;p=openwrt%2Fstaging%2Fblogic.git

isdn: hisax: Fix pnp_irq's error checking for avm_pnp_setup

The pnp_irq() function returns -1 if an error occurs.
pnp_irq() error checking for zero is not correct.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/isdn/hisax/avm_pci.c b/drivers/isdn/hisax/avm_pci.c
index daf3742cdef6..a18b605fb4f2 100644
--- a/drivers/isdn/hisax/avm_pci.c
+++ b/drivers/isdn/hisax/avm_pci.c
@@ -805,7 +805,7 @@ static int avm_pnp_setup(struct IsdnCardState *cs)
 			cs->hw.avm.cfg_reg =
 				pnp_port_start(pnp_avm_d, 0);
 			cs->irq = pnp_irq(pnp_avm_d, 0);
-			if (!cs->irq) {
+			if (cs->irq == -1) {
 				printk(KERN_ERR "FritzPnP:No IRQ\n");
 				return (0);
 			}