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From:   Dmitry Antipov <dmantipov@yandex.ru>
To:     Kalle Valo <kvalo@kernel.org>
Cc:     Ping-Ke Shih <pkshih@realtek.com>, linux-wireless@vger.kernel.org,
        Dmitry Antipov <dmantipov@yandex.ru>
Subject: [PATCH 2/2] [v3] wifi: rtlwifi: cleanup USB interface
Date:   Wed, 14 Jun 2023 09:18:32 +0300
Message-Id: <20230614061832.40882-2-dmantipov@yandex.ru>
In-Reply-To: <20230614061832.40882-1-dmantipov@yandex.ru>
References: <e030e496-b667-b1de-492b-8b0cc04ffe14@yandex.ru>
 <20230614061832.40882-1-dmantipov@yandex.ru>
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Precedence: bulk

Drop unused '_usb_writen_sync()' and relevant pointer
from 'struct rtl_io', handle possible write error in
'_usb_write_async()', adjust related code.

Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
---
v3: readjust to new series and keep pr_{info,err}() things (Kalle Valo)
---
 drivers/net/wireless/realtek/rtlwifi/usb.c  | 31 ++++-----------------
 drivers/net/wireless/realtek/rtlwifi/wifi.h |  2 --
 2 files changed, 6 insertions(+), 27 deletions(-)

diff --git a/drivers/net/wireless/realtek/rtlwifi/usb.c b/drivers/net/wireless/realtek/rtlwifi/usb.c
index 96207b237bf0..30bf2775a335 100644
--- a/drivers/net/wireless/realtek/rtlwifi/usb.c
+++ b/drivers/net/wireless/realtek/rtlwifi/usb.c
@@ -164,13 +164,17 @@ static void _usb_write_async(struct usb_device *udev, u32 addr, u32 val,
 	u16 wvalue;
 	u16 index;
 	__le32 data;
+	int ret;
 
 	request = REALTEK_USB_VENQT_CMD_REQ;
 	index = REALTEK_USB_VENQT_CMD_IDX; /* n/a */
 	wvalue = (u16)(addr&0x0000ffff);
 	data = cpu_to_le32(val);
-	_usbctrl_vendorreq_async_write(udev, request, wvalue, index, &data,
-				       len);
+
+	ret = _usbctrl_vendorreq_async_write(udev, request, wvalue,
+					     index, &data, len);
+	if (ret < 0)
+		dev_err(&udev->dev, "error %d writing at 0x%x\n", ret, addr);
 }
 
 static void _usb_write8_async(struct rtl_priv *rtlpriv, u32 addr, u8 val)
@@ -194,28 +198,6 @@ static void _usb_write32_async(struct rtl_priv *rtlpriv, u32 addr, u32 val)
 	_usb_write_async(to_usb_device(dev), addr, val, 4);
 }
 
-static void _usb_writen_sync(struct rtl_priv *rtlpriv, u32 addr, void *data,
-			     u16 len)
-{
-	struct device *dev = rtlpriv->io.dev;
-	struct usb_device *udev = to_usb_device(dev);
-	u8 request = REALTEK_USB_VENQT_CMD_REQ;
-	u8 reqtype =  REALTEK_USB_VENQT_WRITE;
-	u16 wvalue;
-	u16 index = REALTEK_USB_VENQT_CMD_IDX;
-	int pipe = usb_sndctrlpipe(udev, 0); /* write_out */
-	u8 *buffer;
-
-	wvalue = (u16)(addr & 0x0000ffff);
-	buffer = kmemdup(data, len, GFP_ATOMIC);
-	if (!buffer)
-		return;
-	usb_control_msg(udev, pipe, request, reqtype, wvalue,
-			index, buffer, len, 50);
-
-	kfree(buffer);
-}
-
 static void _rtl_usb_io_handler_init(struct device *dev,
 				     struct ieee80211_hw *hw)
 {
@@ -229,7 +211,6 @@ static void _rtl_usb_io_handler_init(struct device *dev,
 	rtlpriv->io.read8_sync		= _usb_read8_sync;
 	rtlpriv->io.read16_sync		= _usb_read16_sync;
 	rtlpriv->io.read32_sync		= _usb_read32_sync;
-	rtlpriv->io.writen_sync		= _usb_writen_sync;
 }
 
 static void _rtl_usb_io_handler_release(struct ieee80211_hw *hw)
diff --git a/drivers/net/wireless/realtek/rtlwifi/wifi.h b/drivers/net/wireless/realtek/rtlwifi/wifi.h
index 5b4979771dbf..2e7e04f91279 100644
--- a/drivers/net/wireless/realtek/rtlwifi/wifi.h
+++ b/drivers/net/wireless/realtek/rtlwifi/wifi.h
@@ -1457,8 +1457,6 @@ struct rtl_io {
 	void (*write8_async)(struct rtl_priv *rtlpriv, u32 addr, u8 val);
 	void (*write16_async)(struct rtl_priv *rtlpriv, u32 addr, u16 val);
 	void (*write32_async)(struct rtl_priv *rtlpriv, u32 addr, u32 val);
-	void (*writen_sync)(struct rtl_priv *rtlpriv, u32 addr, void *buf,
-			    u16 len);
 
 	u8 (*read8_sync)(struct rtl_priv *rtlpriv, u32 addr);
 	u16 (*read16_sync)(struct rtl_priv *rtlpriv, u32 addr);
-- 
2.40.1