[PATCH 4.4 052/133] usb: phy: twl6030: add IRQ checks

From: Greg Kroah-Hartman
Date: Mon Sep 20 2021 - 12:50:08 EST


From: Sergey Shtylyov <s.shtylyov@xxxxxx>

[ Upstream commit 0881e22c06e66af0b64773c91c8868ead3d01aa1 ]

The driver neglects to check the result of platform_get_irq()'s calls and
blithely passes the negative error codes to request_threaded_irq() (which
takes *unsigned* IRQ #), causing them both to fail with -EINVAL, overriding
an original error code. Stop calling request_threaded_irq() with the
invalid IRQ #s.

Fixes: c33fad0c3748 ("usb: otg: Adding twl6030-usb transceiver driver for OMAP4430")
Acked-by: Felipe Balbi <balbi@xxxxxxxxxx>
Signed-off-by: Sergey Shtylyov <s.shtylyov@xxxxxx>
Link: https://lore.kernel.org/r/9507f50b-50f1-6dc4-f57c-3ed4e53a1c25@xxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/usb/phy/phy-twl6030-usb.c | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/drivers/usb/phy/phy-twl6030-usb.c b/drivers/usb/phy/phy-twl6030-usb.c
index 12741856a75c..220e1a59a871 100644
--- a/drivers/usb/phy/phy-twl6030-usb.c
+++ b/drivers/usb/phy/phy-twl6030-usb.c
@@ -336,6 +336,11 @@ static int twl6030_usb_probe(struct platform_device *pdev)
twl->irq2 = platform_get_irq(pdev, 1);
twl->linkstat = OMAP_MUSB_UNKNOWN;

+ if (twl->irq1 < 0)
+ return twl->irq1;
+ if (twl->irq2 < 0)
+ return twl->irq2;
+
twl->comparator.set_vbus = twl6030_set_vbus;
twl->comparator.start_srp = twl6030_start_srp;

--
2.30.2