linux-kernel - [PATCH v2] staging: r8188eu: Fix cast between incompatible function type

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Date:   Wed,  4 Aug 2021 16:32:18 +0200
From:   "Fabio M. De Francesco" <fmdefrancesco@...il.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Larry Finger <Larry.Finger@...inger.net>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org
Cc:     "Fabio M. De Francesco" <fmdefrancesco@...il.com>
Subject: [PATCH v2] staging: r8188eu: Fix cast between incompatible function type

Fix sparse warnings of casts between incompatible function
types from ‘void (*)(void *)’ to ‘void (*)(long unsigned int)’
[-Wcast-function-type].

Suggested-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Fabio M. De Francesco <fmdefrancesco@...il.com>
---

v1 -> v2:
	According to a suggestion by Dan Carpenter, fix this issue by having
	functions to take an unsigned long instead of a pointer to void.

 drivers/staging/r8188eu/hal/rtl8188eu_recv.c    | 2 +-
 drivers/staging/r8188eu/hal/rtl8188eu_xmit.c    | 2 +-
 drivers/staging/r8188eu/hal/usb_ops_linux.c     | 4 ++--
 drivers/staging/r8188eu/include/rtl8188e_recv.h | 2 +-
 drivers/staging/r8188eu/include/rtl8188e_xmit.h | 2 +-
 5 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/staging/r8188eu/hal/rtl8188eu_recv.c b/drivers/staging/r8188eu/hal/rtl8188eu_recv.c
index 2e3f624d0f22..854377c9f0ab 100644
--- a/drivers/staging/r8188eu/hal/rtl8188eu_recv.c
+++ b/drivers/staging/r8188eu/hal/rtl8188eu_recv.c
@@ -38,7 +38,7 @@ int	rtl8188eu_init_recv_priv(struct adapter *padapter)
 	struct recv_buf *precvbuf;
 
 	tasklet_init(&precvpriv->recv_tasklet,
-		     (void(*)(unsigned long))rtl8188eu_recv_tasklet,
+		     rtl8188eu_recv_tasklet,
 		     (unsigned long)padapter);
 
 	/* init recv_buf */
diff --git a/drivers/staging/r8188eu/hal/rtl8188eu_xmit.c b/drivers/staging/r8188eu/hal/rtl8188eu_xmit.c
index e44a01af7f5c..b0c4f5ed8a6a 100644
--- a/drivers/staging/r8188eu/hal/rtl8188eu_xmit.c
+++ b/drivers/staging/r8188eu/hal/rtl8188eu_xmit.c
@@ -14,7 +14,7 @@ s32	rtl8188eu_init_xmit_priv(struct adapter *adapt)
 	struct xmit_priv	*pxmitpriv = &adapt->xmitpriv;
 
 	tasklet_init(&pxmitpriv->xmit_tasklet,
-		     (void(*)(unsigned long))rtl8188eu_xmit_tasklet,
+		     rtl8188eu_xmit_tasklet,
 		     (unsigned long)adapt);
 	return _SUCCESS;
 }
diff --git a/drivers/staging/r8188eu/hal/usb_ops_linux.c b/drivers/staging/r8188eu/hal/usb_ops_linux.c
index 577090db84be..ffd2474a8760 100644
--- a/drivers/staging/r8188eu/hal/usb_ops_linux.c
+++ b/drivers/staging/r8188eu/hal/usb_ops_linux.c
@@ -459,7 +459,7 @@ static int recvbuf2recvframe(struct adapter *adapt, struct sk_buff *pskb)
 	return _SUCCESS;
 }
 
-void rtl8188eu_recv_tasklet(void *priv)
+void rtl8188eu_recv_tasklet(unsigned long priv)
 {
 	struct sk_buff *pskb;
 	struct adapter *adapt = (struct adapter *)priv;
@@ -649,7 +649,7 @@ static u32 usb_read_port(struct intf_hdl *pintfhdl, u32 addr, u32 cnt, u8 *rmem)
 	return ret;
 }
 
-void rtl8188eu_xmit_tasklet(void *priv)
+void rtl8188eu_xmit_tasklet(unsigned long priv)
 {
 	int ret = false;
 	struct adapter *adapt = (struct adapter *)priv;
diff --git a/drivers/staging/r8188eu/include/rtl8188e_recv.h b/drivers/staging/r8188eu/include/rtl8188e_recv.h
index bc1d532592b9..a91daf84d6c3 100644
--- a/drivers/staging/r8188eu/include/rtl8188e_recv.h
+++ b/drivers/staging/r8188eu/include/rtl8188e_recv.h
@@ -44,7 +44,7 @@ void rtl8188eu_init_recvbuf(struct adapter *padapter, struct recv_buf *buf);
 s32 rtl8188eu_init_recv_priv(struct adapter *padapter);
 void rtl8188eu_free_recv_priv(struct adapter * padapter);
 void rtl8188eu_recv_hdl(struct adapter * padapter, struct recv_buf *precvbuf);
-void rtl8188eu_recv_tasklet(void *priv);
+void rtl8188eu_recv_tasklet(unsigned long priv);
 void rtl8188e_query_rx_phy_status(struct recv_frame *fr, struct phy_stat *phy);
 void rtl8188e_process_phy_info(struct adapter * padapter, void *prframe);
 void update_recvframe_phyinfo_88e(struct recv_frame *fra, struct phy_stat *phy);
diff --git a/drivers/staging/r8188eu/include/rtl8188e_xmit.h b/drivers/staging/r8188eu/include/rtl8188e_xmit.h
index e9b71de0d165..8adfa98f99d0 100644
--- a/drivers/staging/r8188eu/include/rtl8188e_xmit.h
+++ b/drivers/staging/r8188eu/include/rtl8188e_xmit.h
@@ -147,7 +147,7 @@ s32 rtl8188eu_hal_xmit(struct adapter *padapter, struct xmit_frame *frame);
 s32 rtl8188eu_mgnt_xmit(struct adapter *padapter, struct xmit_frame *frame);
 s32 rtl8188eu_xmit_buf_handler(struct adapter *padapter);
 #define hal_xmit_handler rtl8188eu_xmit_buf_handler
-void rtl8188eu_xmit_tasklet(void *priv);
+void rtl8188eu_xmit_tasklet(unsigned long priv);
 s32 rtl8188eu_xmitframe_complete(struct adapter *padapter,
 				 struct xmit_priv *pxmitpriv,
 				 struct xmit_buf *pxmitbuf);
-- 
2.32.0