linux-kernel - [PATCH] USB: EHCI: ehci-mv: fix error handling in mv_ehci

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>] [day] [month] [year] [list]

Message-Id: <20200508114305.15740-1-tangbin@cmss.chinamobile.com>
Date:   Fri,  8 May 2020 19:43:05 +0800
From:   Tang Bin <tangbin@...s.chinamobile.com>
To:     stern@...land.harvard.edu, gregkh@...uxfoundation.org
Cc:     linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
        Tang Bin <tangbin@...s.chinamobile.com>,
        Zhang Shengju <zhangshengju@...s.chinamobile.com>
Subject: [PATCH] USB: EHCI: ehci-mv: fix error handling in mv_ehci_probe()

If the function platform_get_irq() failed, the negative value
returned will not be detected here. So fix error handling in
mv_ehci_probe(). And when get irq failed, the function
platform_get_irq() logs an error message, so remove redundant
message here.

Signed-off-by: Zhang Shengju <zhangshengju@...s.chinamobile.com>
Signed-off-by: Tang Bin <tangbin@...s.chinamobile.com>
---
 drivers/usb/host/ehci-mv.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/host/ehci-mv.c b/drivers/usb/host/ehci-mv.c
index 1c079953e..b2da62bfd 100644
--- a/drivers/usb/host/ehci-mv.c
+++ b/drivers/usb/host/ehci-mv.c
@@ -166,9 +166,8 @@ static int mv_ehci_probe(struct platform_device *pdev)
 	hcd->regs = ehci_mv->op_regs;
 
 	hcd->irq = platform_get_irq(pdev, 0);
-	if (!hcd->irq) {
-		dev_err(&pdev->dev, "Cannot get irq.");
-		retval = -ENODEV;
+	if (hcd->irq < 0) {
+		retval = hcd->irq;
 		goto err_disable_clk;
 	}
 
-- 
2.20.1.windows.1