linux-kernel - [PATCH 1/6] staging: r8188eu: pass a struct recv_buf to rtw_read

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Date:   Mon,  6 Feb 2023 21:17:55 +0100
From:   Martin Kaiser <martin@...ser.cx>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Larry Finger <Larry.Finger@...inger.net>,
        Phillip Potter <phil@...lpotter.co.uk>,
        Michael Straube <straube.linux@...il.com>,
        Pavel Skripkin <paskripkin@...il.com>,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org,
        Martin Kaiser <martin@...ser.cx>
Subject: [PATCH 1/6] staging: r8188eu: pass a struct recv_buf to rtw_read_port

The rtw_read_port function needs a struct recv_buf for preparing the usb
transfer.

Replace its u8 *rmem parameter with a struct recv_buf pointer to avoid
casts in the caller and in rtw_read_port.

Signed-off-by: Martin Kaiser <martin@...ser.cx>
---
 drivers/staging/r8188eu/hal/usb_halinit.c   | 2 +-
 drivers/staging/r8188eu/hal/usb_ops_linux.c | 9 ++++-----
 drivers/staging/r8188eu/include/rtw_io.h    | 2 +-
 3 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/drivers/staging/r8188eu/hal/usb_halinit.c b/drivers/staging/r8188eu/hal/usb_halinit.c
index b7c9e5fd9a59..25fd6f8d814c 100644
--- a/drivers/staging/r8188eu/hal/usb_halinit.c
+++ b/drivers/staging/r8188eu/hal/usb_halinit.c
@@ -860,7 +860,7 @@ unsigned int rtl8188eu_inirp_init(struct adapter *Adapter)
 	/* issue Rx irp to receive data */
 	precvbuf = (struct recv_buf *)precvpriv->precv_buf;
 	for (i = 0; i < NR_RECVBUFF; i++) {
-		if (!rtw_read_port(Adapter, (unsigned char *)precvbuf)) {
+		if (!rtw_read_port(Adapter, precvbuf)) {
 			status = _FAIL;
 			goto exit;
 		}
diff --git a/drivers/staging/r8188eu/hal/usb_ops_linux.c b/drivers/staging/r8188eu/hal/usb_ops_linux.c
index 9c940ab8fd41..225a422ede4f 100644
--- a/drivers/staging/r8188eu/hal/usb_ops_linux.c
+++ b/drivers/staging/r8188eu/hal/usb_ops_linux.c
@@ -364,7 +364,7 @@ static void usb_read_port_complete(struct urb *purb)
 	if (purb->status == 0) { /* SUCCESS */
 		if ((purb->actual_length > MAX_RECVBUF_SZ) || (purb->actual_length < RXDESC_SIZE)) {
 			precvbuf->reuse = true;
-			rtw_read_port(adapt, (unsigned char *)precvbuf);
+			rtw_read_port(adapt, precvbuf);
 		} else {
 			rtw_reset_continual_urb_error(adapter_to_dvobj(adapt));
 
@@ -376,7 +376,7 @@ static void usb_read_port_complete(struct urb *purb)
 
 			precvbuf->pskb = NULL;
 			precvbuf->reuse = false;
-			rtw_read_port(adapt, (unsigned char *)precvbuf);
+			rtw_read_port(adapt, precvbuf);
 		}
 	} else {
 		skb_put(precvbuf->pskb, purb->actual_length);
@@ -396,7 +396,7 @@ static void usb_read_port_complete(struct urb *purb)
 		case -EPROTO:
 		case -EOVERFLOW:
 			precvbuf->reuse = true;
-			rtw_read_port(adapt, (unsigned char *)precvbuf);
+			rtw_read_port(adapt, precvbuf);
 			break;
 		case -EINPROGRESS:
 			break;
@@ -406,10 +406,9 @@ static void usb_read_port_complete(struct urb *purb)
 	}
 }
 
-u32 rtw_read_port(struct adapter *adapter, u8 *rmem)
+u32 rtw_read_port(struct adapter *adapter, struct recv_buf *precvbuf)
 {
 	struct urb *purb = NULL;
-	struct recv_buf	*precvbuf = (struct recv_buf *)rmem;
 	struct dvobj_priv	*pdvobj = adapter_to_dvobj(adapter);
 	struct recv_priv	*precvpriv = &adapter->recvpriv;
 	struct usb_device	*pusbd = pdvobj->pusbdev;
diff --git a/drivers/staging/r8188eu/include/rtw_io.h b/drivers/staging/r8188eu/include/rtw_io.h
index 090555f562f2..6b1de4f0e287 100644
--- a/drivers/staging/r8188eu/include/rtw_io.h
+++ b/drivers/staging/r8188eu/include/rtw_io.h
@@ -19,7 +19,7 @@
 int __must_check rtw_read8(struct adapter *adapter, u32 addr, u8 *data);
 int __must_check rtw_read16(struct adapter *adapter, u32 addr, u16 *data);
 int __must_check rtw_read32(struct adapter *adapter, u32 addr, u32 *data);
-u32 rtw_read_port(struct adapter *adapter, u8 *pmem);
+u32 rtw_read_port(struct adapter *adapter, struct recv_buf *precvbuf);
 void rtw_read_port_cancel(struct adapter *adapter);
 
 int rtw_write8(struct adapter *adapter, u32 addr, u8 val);
-- 
2.30.2