linux-kernel - [PATCH net] nfc: pn533: Fix error code in pn533_acr122_poweron

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Message-ID: <aTfIJ9tZPmeUF4W1@stanley.mountain>
Date: Tue, 9 Dec 2025 09:56:39 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Krzysztof Kozlowski <krzk@...nel.org>, Johan Hovold <johan@...nel.org>,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: [PATCH net] nfc: pn533: Fix error code in pn533_acr122_poweron_rdr()

Set the error code if "transferred != sizeof(cmd)" instead of
returning success.

Fixes: dbafc28955fa ("NFC: pn533: don't send USB data off of the stack")
Signed-off-by: Dan Carpenter <dan.carpenter@...aro.org>
---
 drivers/nfc/pn533/usb.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/nfc/pn533/usb.c b/drivers/nfc/pn533/usb.c
index ffd7367ce119..018a80674f06 100644
--- a/drivers/nfc/pn533/usb.c
+++ b/drivers/nfc/pn533/usb.c
@@ -406,7 +406,7 @@ static int pn533_acr122_poweron_rdr(struct pn533_usb_phy *phy)
 	if (rc || (transferred != sizeof(cmd))) {
 		nfc_err(&phy->udev->dev,
 			"Reader power on cmd error %d\n", rc);
-		return rc;
+		return rc ?: -EINVAL;
 	}
 
 	rc =  usb_submit_urb(phy->in_urb, GFP_KERNEL);
-- 
2.51.0