linux-kernel - [PATCH 08/12] isdn: hisax: Fix pnp_irq's error checking for setup

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Date:   Thu, 16 Nov 2017 09:57:25 +0530
From:   Arvind Yadav <arvind.yadav.cs@...il.com>
To:     isdn@...ux-pingi.de, davem@...emloft.net,
        stephen@...workplumber.org, johannes.berg@...el.com
Cc:     linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: [PATCH 08/12] isdn: hisax: Fix pnp_irq's error checking for setup_isurf

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@...il.com>
---
 drivers/isdn/hisax/isurf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/isdn/hisax/isurf.c b/drivers/isdn/hisax/isurf.c
index 1399ddd..53e299b 100644
--- a/drivers/isdn/hisax/isurf.c
+++ b/drivers/isdn/hisax/isurf.c
@@ -238,7 +238,7 @@ int setup_isurf(struct IsdnCard *card)
 				cs->hw.isurf.reset = pnp_port_start(pnp_d, 0);
 				cs->hw.isurf.phymem = pnp_mem_start(pnp_d, 1);
 				cs->irq = pnp_irq(pnp_d, 0);
-				if (!cs->irq || !cs->hw.isurf.reset || !cs->hw.isurf.phymem) {
+				if (cs->irq == -1 || !cs->hw.isurf.reset || !cs->hw.isurf.phymem) {
 					printk(KERN_ERR "ISurfPnP:some resources are missing %d/%x/%lx\n",
 					       cs->irq, cs->hw.isurf.reset, cs->hw.isurf.phymem);
 					pnp_disable_dev(pnp_d);
-- 
1.9.1