linux-kernel - [PATCH v10 03/16] staging: r8188eu: remove test in usbctrl

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Date:   Fri, 24 Sep 2021 14:26:52 +0200
From:   "Fabio M. De Francesco" <fmdefrancesco@...il.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Larry Finger <Larry.Finger@...inger.net>,
        Phillip Potter <phil@...lpotter.co.uk>,
        Pavel Skripkin <paskripkin@...il.com>,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org,
        David Laight <david.Laight@...lab.com>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        Michael Straube <straube.linux@...il.com>,
        Martin Kaiser <martin@...ser.cx>
Cc:     "Fabio M. De Francesco" <fmdefrancesco@...il.com>
Subject: [PATCH v10 03/16] staging: r8188eu: remove test in usbctrl_vendorreq()

Remove unnecessary test for "!io_buf" in usbctrl_vendorreq(). This test
is not necessary because io_buf has been assigned with the address of
a region of dynamically allocated memory (dvobj->usb_alloc_vendor_req_buf)
by rtw_init_intf_priv() in os_dep/usb_intf.c.

Co-developed-by: Pavel Skripkin <paskripkin@...il.com>
Signed-off-by: Pavel Skripkin <paskripkin@...il.com>
Signed-off-by: Fabio M. De Francesco <fmdefrancesco@...il.com>
---
 drivers/staging/r8188eu/hal/usb_ops_linux.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/drivers/staging/r8188eu/hal/usb_ops_linux.c b/drivers/staging/r8188eu/hal/usb_ops_linux.c
index 84ec7c1346b1..61a016e3608f 100644
--- a/drivers/staging/r8188eu/hal/usb_ops_linux.c
+++ b/drivers/staging/r8188eu/hal/usb_ops_linux.c
@@ -34,12 +34,6 @@ static int usbctrl_vendorreq(struct intf_hdl *intf, u16 value, void *data, u16 l
 	/*  Acquire IO memory for vendorreq */
 	io_buf = dvobjpriv->usb_vendor_req_buf;
 
-	if (!io_buf) {
-		DBG_88E("[%s] io_buf == NULL\n", __func__);
-		status = -ENOMEM;
-		goto release_mutex;
-	}
-
 	if (requesttype == REALTEK_USB_VENQT_READ)
 		pipe = usb_rcvctrlpipe(udev, 0);/* read_in */
 	else
@@ -91,7 +85,7 @@ static int usbctrl_vendorreq(struct intf_hdl *intf, u16 value, void *data, u16 l
 		if ((value >= FW_8188E_START_ADDRESS && value <= FW_8188E_END_ADDRESS) || status == len)
 			break;
 	}
-release_mutex:
+
 	mutex_unlock(&dvobjpriv->usb_vendor_req_mutex);
 exit:
 	return status;
-- 
2.33.0