linux-kernel - [PATCH v4 05/18] staging: r8188eu: remove the helpers of usb

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Message-Id: <20210913181002.16651-6-fmdefrancesco@gmail.com>
Date:   Mon, 13 Sep 2021 20:09:49 +0200
From:   "Fabio M. De Francesco" <fmdefrancesco@...il.com>
To:     Larry Finger <Larry.Finger@...inger.net>,
        Phillip Potter <phil@...lpotter.co.uk>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Michael Straube <straube.linux@...il.com>
Cc:     Pavel Skripkin <paskripkin@...il.com>,
        "Fabio M . De Francesco" <fmdefrancesco@...il.com>
Subject: [PATCH v4 05/18] staging: r8188eu: remove the helpers of usb_write8

From: Pavel Skripkin <paskripkin@...il.com>

Remove the unnecessary _rtw_write8() and usb_write8() and embed their
code into the caller (i.e., rtw_write8()).

_rtw_write8() is a mere redefinition of rtw_write8() and it is unneeded.
usb_write8() was the only functions assigned to the (*_usb_write8) pointer,
so we can simply remove it and make a direct call.

This patch is in preparation for the _io_ops structure removal.

Co-developed-by: Fabio M. De Francesco <fmdefrancesco@...il.com>
Signed-off-by: Fabio M. De Francesco <fmdefrancesco@...il.com>
Signed-off-by: Pavel Skripkin <paskripkin@...il.com>
---

v3->v4:
        Split a patch into fourteen.
v2->v3:
        No changes.
v1->v2:
        No changes.

 drivers/staging/r8188eu/core/rtw_io.c       | 15 ---------------
 drivers/staging/r8188eu/hal/usb_ops_linux.c | 10 +++++++---
 drivers/staging/r8188eu/include/rtw_io.h    |  4 +---
 3 files changed, 8 insertions(+), 21 deletions(-)

diff --git a/drivers/staging/r8188eu/core/rtw_io.c b/drivers/staging/r8188eu/core/rtw_io.c
index cb24500cbc6e..69ab6e24a4b7 100644
--- a/drivers/staging/r8188eu/core/rtw_io.c
+++ b/drivers/staging/r8188eu/core/rtw_io.c
@@ -34,21 +34,6 @@ jackson@...ltek.com.tw
 #define rtw_cpu_to_le16(val)		cpu_to_le16(val)
 #define rtw_cpu_to_le32(val)		cpu_to_le32(val)
 
-int _rtw_write8(struct adapter *adapter, u32 addr, u8 val)
-{
-	struct io_priv *pio_priv = &adapter->iopriv;
-	struct	intf_hdl		*pintfhdl = &pio_priv->intf;
-	int (*_write8)(struct intf_hdl *pintfhdl, u32 addr, u8 val);
-	int ret;
-
-	_write8 = pintfhdl->io_ops._write8;
-
-	ret = _write8(pintfhdl, addr, val);
-
-
-	return RTW_STATUS_CODE(ret);
-}
-
 int _rtw_write16(struct adapter *adapter, u32 addr, u16 val)
 {
 	struct io_priv *pio_priv = &adapter->iopriv;
diff --git a/drivers/staging/r8188eu/hal/usb_ops_linux.c b/drivers/staging/r8188eu/hal/usb_ops_linux.c
index 39fd9994787d..69e64863a5d1 100644
--- a/drivers/staging/r8188eu/hal/usb_ops_linux.c
+++ b/drivers/staging/r8188eu/hal/usb_ops_linux.c
@@ -133,11 +133,16 @@ u32 rtw_read32(struct adapter *adapter, u32 addr)
 	return le32_to_cpu(data);
 }
 
-static int usb_write8(struct intf_hdl *pintfhdl, u32 addr, u8 val)
+int rtw_write8(struct adapter *adapter, u32 addr, u8 val)
 {
+	struct io_priv *pio_priv = &adapter->iopriv;
+	struct intf_hdl *pintfhdl = &pio_priv->intf;
 	u16 wvalue = (u16)(addr & 0x0000ffff);
+	int ret;
+
+	ret = usbctrl_vendorreq(pintfhdl, wvalue, &val, 1, REALTEK_USB_VENQT_WRITE);
 
-	return usbctrl_vendorreq(pintfhdl, wvalue, &val, 1, REALTEK_USB_VENQT_WRITE);
+	return RTW_STATUS_CODE(ret);
 }
 
 static int usb_write16(struct intf_hdl *pintfhdl, u32 addr, u16 val)
@@ -545,7 +550,6 @@ void rtl8188eu_set_intf_ops(struct _io_ops	*pops)
 
 	memset((u8 *)pops, 0, sizeof(struct _io_ops));
 	pops->_read_port = &usb_read_port;
-	pops->_write8 = &usb_write8;
 	pops->_write16 = &usb_write16;
 	pops->_write32 = &usb_write32;
 	pops->_writeN = &usb_writeN;
diff --git a/drivers/staging/r8188eu/include/rtw_io.h b/drivers/staging/r8188eu/include/rtw_io.h
index c53d9c8bd9a7..3b229027f094 100644
--- a/drivers/staging/r8188eu/include/rtw_io.h
+++ b/drivers/staging/r8188eu/include/rtw_io.h
@@ -252,7 +252,7 @@ void _rtw_read_mem(struct adapter *adapter, u32 addr, u32 cnt, u8 *pmem);
 void _rtw_read_port(struct adapter *adapter, u32 addr, u32 cnt, u8 *pmem);
 void _rtw_read_port_cancel(struct adapter *adapter);
 
-int _rtw_write8(struct adapter *adapter, u32 addr, u8 val);
+int rtw_write8(struct adapter *adapter, u32 addr, u8 val);
 int _rtw_write16(struct adapter *adapter, u32 addr, u16 val);
 int _rtw_write32(struct adapter *adapter, u32 addr, u32 val);
 int _rtw_writeN(struct adapter *adapter, u32 addr, u32 length, u8 *pdata);
@@ -271,8 +271,6 @@ void _rtw_write_port_cancel(struct adapter *adapter);
 	_rtw_read_port((adapter), (addr), (cnt), (mem))
 #define rtw_read_port_cancel(adapter) _rtw_read_port_cancel((adapter))
 
-#define  rtw_write8(adapter, addr, val)					\
-	_rtw_write8((adapter), (addr), (val))
 #define  rtw_write16(adapter, addr, val)				\
 	_rtw_write16((adapter), (addr), (val))
 #define  rtw_write32(adapter, addr, val)				\
-- 
2.33.0