linux-kernel - [PATCH] ipmi: bt-bmc: Fix platform_get

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Message-Id: <0a615dd873053a2a53cb2b924dd863a9b69fb180.1511451942.git.arvind.yadav.cs@gmail.com>
Date:   Thu, 23 Nov 2017 21:16:35 +0530
From:   Arvind Yadav <arvind.yadav.cs@...il.com>
To:     minyard@....org
Cc:     linux-kernel@...r.kernel.org,
        openipmi-developer@...ts.sourceforge.net
Subject: [PATCH] ipmi: bt-bmc: Fix platform_get_irq's error checking

The platform_get_irq() function returns negative if an error occurs.
zero or positive number on success. platform_get_irq() error checking
for zero is not correct.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@...il.com>
---
 drivers/char/ipmi/bt-bmc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/char/ipmi/bt-bmc.c b/drivers/char/ipmi/bt-bmc.c
index 70d434b..7566683 100644
--- a/drivers/char/ipmi/bt-bmc.c
+++ b/drivers/char/ipmi/bt-bmc.c
@@ -410,7 +410,7 @@ static int bt_bmc_config_irq(struct bt_bmc *bt_bmc,
 	int rc;
 
 	bt_bmc->irq = platform_get_irq(pdev, 0);
-	if (!bt_bmc->irq)
+	if (bt_bmc->irq < 0)
 		return -ENODEV;
 
 	rc = devm_request_irq(dev, bt_bmc->irq, bt_bmc_irq, IRQF_SHARED,
-- 
2.7.4