From: Tang Bin <tangbin@cmss.chinamobile.com>
Date: Wed, 26 Aug 2020 14:49:31 +0000 (+0800)
Subject: usb: host: ohci-exynos: Fix error handling in exynos_ohci_probe()
X-Git-Tag: v4.9.235~9
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=28d3ae31454e330aa1db09e60e468742369bab65;p=platform%2Fkernel%2Flinux-amlogic.git

usb: host: ohci-exynos: Fix error handling in exynos_ohci_probe()

commit 1d4169834628d18b2392a2da92b7fbf5e8e2ce89 upstream.

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

Fixes: 62194244cf87 ("USB: Add Samsung Exynos OHCI diver")
Signed-off-by: Zhang Shengju <zhangshengju@cmss.chinamobile.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Tang Bin <tangbin@cmss.chinamobile.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20200826144931.1828-1-tangbin@cmss.chinamobile.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/usb/host/ohci-exynos.c b/drivers/usb/host/ohci-exynos.c
index 6865b91..2ed062a 100644
--- a/drivers/usb/host/ohci-exynos.c
+++ b/drivers/usb/host/ohci-exynos.c
@@ -166,9 +166,8 @@ skip_phy:
 	hcd->rsrc_len = resource_size(res);
 
 	irq = platform_get_irq(pdev, 0);
-	if (!irq) {
-		dev_err(&pdev->dev, "Failed to get IRQ\n");
-		err = -ENODEV;
+	if (irq < 0) {
+		err = irq;
 		goto fail_io;
 	}