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From:   "Fabio M. De Francesco" <fmdefrancesco@gmail.com>
To:     Larry Finger <Larry.Finger@lwfinger.net>,
        Philip Potter <phil@philpotter.co.uk>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Pavel Skripkin <paskripkin@gmail.com>,
        linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org,
        David Laight <david.Laight@aculab.com>,
        Dan Carpenter <dan.carpenter@oracle.com>
Cc:     "Fabio M . De Francesco" <fmdefrancesco@gmail.com>
Subject: [PATCH v5 03/19] staging: r8188eu: remove the helpers of rtw_read16()
Date:   Wed, 15 Sep 2021 14:41:33 +0200
Message-Id: <20210915124149.27543-4-fmdefrancesco@gmail.com>
In-Reply-To: <20210915124149.27543-1-fmdefrancesco@gmail.com>
References: <20210915124149.27543-1-fmdefrancesco@gmail.com>
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From: Pavel Skripkin <paskripkin@gmail.com>

Remove the unnecessary _rtw_read16() and usb_read16() and embed their
code into the caller (i.e., rtw_read16()).

_rtw_read16() is a mere redefinition of rtw_read16() and it is unneeded.
usb_read16() was the only functions assigned to the (*_usb_read16) 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@gmail.com>
Signed-off-by: Fabio M. De Francesco <fmdefrancesco@gmail.com>
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
---
 drivers/staging/r8188eu/core/rtw_io.c       | 14 --------------
 drivers/staging/r8188eu/hal/usb_ops_linux.c |  5 +++--
 drivers/staging/r8188eu/include/rtw_io.h    |  3 +--
 3 files changed, 4 insertions(+), 18 deletions(-)

diff --git a/drivers/staging/r8188eu/core/rtw_io.c b/drivers/staging/r8188eu/core/rtw_io.c
index 4c43b6d00178..b5d1c8e52b22 100644
--- a/drivers/staging/r8188eu/core/rtw_io.c
+++ b/drivers/staging/r8188eu/core/rtw_io.c
@@ -34,20 +34,6 @@ jackson@realtek.com.tw
 #define rtw_cpu_to_le16(val)		cpu_to_le16(val)
 #define rtw_cpu_to_le32(val)		cpu_to_le32(val)
 
-u16 _rtw_read16(struct adapter *adapter, u32 addr)
-{
-	u16 r_val;
-	struct io_priv *pio_priv = &adapter->iopriv;
-	struct	intf_hdl		*pintfhdl = &pio_priv->intf;
-	u16 (*_read16)(struct intf_hdl *pintfhdl, u32 addr);
-
-	_read16 = pintfhdl->io_ops._read16;
-
-	r_val = _read16(pintfhdl, addr);
-
-	return r_val;
-}
-
 u32 _rtw_read32(struct adapter *adapter, u32 addr)
 {
 	u32 r_val;
diff --git a/drivers/staging/r8188eu/hal/usb_ops_linux.c b/drivers/staging/r8188eu/hal/usb_ops_linux.c
index 8389deeb1182..8b4fc014d93a 100644
--- a/drivers/staging/r8188eu/hal/usb_ops_linux.c
+++ b/drivers/staging/r8188eu/hal/usb_ops_linux.c
@@ -109,8 +109,10 @@ u8 rtw_read8(struct adapter *adapter, u32 addr)
 	return data;
 }
 
-static u16 usb_read16(struct intf_hdl *pintfhdl, u32 addr)
+u16 rtw_read16(struct adapter *adapter, u32 addr)
 {
+	struct io_priv *pio_priv = &adapter->iopriv;
+	struct intf_hdl *pintfhdl = &pio_priv->intf;
 	u16 wvalue = (u16)(addr & 0x0000ffff);
 	__le32 data;
 
@@ -540,7 +542,6 @@ void rtl8188eu_set_intf_ops(struct _io_ops	*pops)
 {
 
 	memset((u8 *)pops, 0, sizeof(struct _io_ops));
-	pops->_read16 = &usb_read16;
 	pops->_read32 = &usb_read32;
 	pops->_read_port = &usb_read_port;
 	pops->_write8 = &usb_write8;
diff --git a/drivers/staging/r8188eu/include/rtw_io.h b/drivers/staging/r8188eu/include/rtw_io.h
index 9dc32f7bcae8..527503d3ecc8 100644
--- a/drivers/staging/r8188eu/include/rtw_io.h
+++ b/drivers/staging/r8188eu/include/rtw_io.h
@@ -246,7 +246,7 @@ void _rtw_attrib_read(struct adapter *adapter, u32 addr, u32 cnt, u8 *pmem);
 void _rtw_attrib_write(struct adapter *adapter, u32 addr, u32 cnt, u8 *pmem);
 
 u8 rtw_read8(struct adapter *adapter, u32 addr);
-u16 _rtw_read16(struct adapter *adapter, u32 addr);
+u16 rtw_read16(struct adapter *adapter, u32 addr);
 u32 _rtw_read32(struct adapter *adapter, u32 addr);
 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);
@@ -267,7 +267,6 @@ u32 _rtw_write_port_and_wait(struct adapter *adapter, u32 addr, u32 cnt,
 			     u8 *pmem, int timeout_ms);
 void _rtw_write_port_cancel(struct adapter *adapter);
 
-#define rtw_read16(adapter, addr) _rtw_read16((adapter), (addr))
 #define rtw_read32(adapter, addr) _rtw_read32((adapter), (addr))
 #define rtw_read_port(adapter, addr, cnt, mem)				\
 	_rtw_read_port((adapter), (addr), (cnt), (mem))
-- 
2.33.0