linux-kernel - [PATCH 5.17 262/772] ixp4xx_eth: fix error check return value of platform_get

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Tue,  7 Jun 2022 18:57:34 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Zeal Robot <zealci@....com.cn>,
        Lv Ruyi <lv.ruyi@....com.cn>,
        Linus Walleij <linus.walleij@...aro.org>,
        Jakub Kicinski <kuba@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.17 262/772] ixp4xx_eth: fix error check return value of platform_get_irq()

From: Lv Ruyi <lv.ruyi@....com.cn>

[ Upstream commit f45ba67eb74ab4b775616af731bdf8944afce3f1 ]

platform_get_irq() return negative value on failure, so null check of
return value is incorrect. Fix it by comparing whether it is less than
zero.

Fixes: 9055a2f59162 ("ixp4xx_eth: make ptp support a platform driver")
Reported-by: Zeal Robot <zealci@....com.cn>
Signed-off-by: Lv Ruyi <lv.ruyi@....com.cn>
Reviewed-by: Linus Walleij <linus.walleij@...aro.org>
Link: https://lore.kernel.org/r/20220412085126.2532924-1-lv.ruyi@zte.com.cn
Signed-off-by: Jakub Kicinski <kuba@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/ethernet/xscale/ptp_ixp46x.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/xscale/ptp_ixp46x.c b/drivers/net/ethernet/xscale/ptp_ixp46x.c
index 39234852e01b..20f6aa508003 100644
--- a/drivers/net/ethernet/xscale/ptp_ixp46x.c
+++ b/drivers/net/ethernet/xscale/ptp_ixp46x.c
@@ -272,7 +272,7 @@ static int ptp_ixp_probe(struct platform_device *pdev)
 	ixp_clock.master_irq = platform_get_irq(pdev, 0);
 	ixp_clock.slave_irq = platform_get_irq(pdev, 1);
 	if (IS_ERR(ixp_clock.regs) ||
-	    !ixp_clock.master_irq || !ixp_clock.slave_irq)
+	    ixp_clock.master_irq < 0 || ixp_clock.slave_irq < 0)
 		return -ENXIO;
 
 	ixp_clock.caps = ptp_ixp_caps;
-- 
2.35.1