linux-kernel - [PATCH] USB: serial: ti_usb_3410_5052: drop bogus read urb check

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Message-ID: <20250424074448.5537-1-johan@kernel.org>
Date: Thu, 24 Apr 2025 09:44:48 +0200
From: Johan Hovold <johan@...nel.org>
To: Johan Hovold <johan@...nel.org>
Cc: linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] USB: serial: ti_usb_3410_5052: drop bogus read urb check

The read urb pointer is dereferenced before checking that it is non-NULL
during open(), but no check is needed as the existence of a bulk in
endpoint is verified during attach() since commit ef079936d3cd ("USB:
serial: ti_usb_3410_5052: fix NULL-deref at open").

Drop the bogus read urb sanity check.

Signed-off-by: Johan Hovold <johan@...nel.org>
---
 drivers/usb/serial/ti_usb_3410_5052.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c
index a0c244bc77c0..d671189ecee2 100644
--- a/drivers/usb/serial/ti_usb_3410_5052.c
+++ b/drivers/usb/serial/ti_usb_3410_5052.c
@@ -729,11 +729,6 @@ static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)
 
 	/* start read urb */
 	urb = port->read_urb;
-	if (!urb) {
-		dev_err(&port->dev, "%s - no read urb\n", __func__);
-		status = -EINVAL;
-		goto unlink_int_urb;
-	}
 	tport->tp_read_urb_state = TI_READ_URB_RUNNING;
 	urb->context = tport;
 	status = usb_submit_urb(urb, GFP_KERNEL);
-- 
2.49.0