2020-06-02 11:50:05

by Tang Bin

[permalink] [raw]
Subject: [PATCH] usb: host: ehci-exynos: Fix error check in exynos_ehci_probe()

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

Fixes: 1bcc5aa87f04 ("USB: Add initial S5P EHCI driver")
Signed-off-by: Zhang Shengju <[email protected]>
Signed-off-by: Tang Bin <[email protected]>
---
drivers/usb/host/ehci-exynos.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/host/ehci-exynos.c b/drivers/usb/host/ehci-exynos.c
index a4e9abcbd..1a9b7572e 100644
--- a/drivers/usb/host/ehci-exynos.c
+++ b/drivers/usb/host/ehci-exynos.c
@@ -203,9 +203,8 @@ static int exynos_ehci_probe(struct platform_device *pdev)
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;
}

--
2.20.1.windows.1