linux-kernel - [PATCH 5.9 041/391] usb: host: ehci-tegra: Fix error handling in tegra_ehci

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Date:   Tue,  3 Nov 2020 21:31:32 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Alan Stern <stern@...land.harvard.edu>,
        Thierry Reding <treding@...dia.com>,
        Tang Bin <tangbin@...s.chinamobile.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.9 041/391] usb: host: ehci-tegra: Fix error handling in tegra_ehci_probe()

From: Tang Bin <tangbin@...s.chinamobile.com>

[ Upstream commit 32d174d2d5eb318c34ff36771adefabdf227c186 ]

If the function platform_get_irq() failed, the negative value
returned will not be detected here. So fix error handling in
tegra_ehci_probe().

Fixes: 79ad3b5add4a ("usb: host: Add EHCI driver for NVIDIA Tegra SoCs")
Acked-by: Alan Stern <stern@...land.harvard.edu>
Acked-by: Thierry Reding <treding@...dia.com>
Signed-off-by: Tang Bin <tangbin@...s.chinamobile.com>
Link: https://lore.kernel.org/r/20201026090657.49988-1-tangbin@cmss.chinamobile.com
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/usb/host/ehci-tegra.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c
index e077b2ca53c51..869d9c4de5fcd 100644
--- a/drivers/usb/host/ehci-tegra.c
+++ b/drivers/usb/host/ehci-tegra.c
@@ -479,8 +479,8 @@ static int tegra_ehci_probe(struct platform_device *pdev)
 	u_phy->otg->host = hcd_to_bus(hcd);
 
 	irq = platform_get_irq(pdev, 0);
-	if (!irq) {
-		err = -ENODEV;
+	if (irq < 0) {
+		err = irq;
 		goto cleanup_phy;
 	}
 
-- 
2.27.0