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staging: rtl*: Remove tasklet callback casts

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In order to make the entire kernel usable under Clang's Control Flow
Integrity protections, function prototype casts need to be avoided
because this will trip CFI checks at runtime (i.e. a mismatch between
the caller's expected function prototype and the destination function's
prototype). Many of these cases can be found with -Wcast-function-type,
which found that the rtl wifi drivers had a bunch of needless function
casts. Remove function casts for tasklet callbacks in the various drivers.

Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/201911150926.2894A4F973@keescook
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Kees Cook 2019-11-15 09:28:28 -08:00 committed by Greg Kroah-Hartman
parent 2611045e35
commit 6cfed59848
13 changed files with 31 additions and 40 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/staging/rtl8188eu/hal/rtl8188eu_recv.c
View File

@ -22,8 +22,7 @@ int rtw_hal_init_recv_priv(struct adapter *padapter)
int i, res = _SUCCESS;
struct recv_buf *precvbuf;
tasklet_init(&precvpriv->recv_tasklet,
(void(*)(unsigned long))rtl8188eu_recv_tasklet,
tasklet_init(&precvpriv->recv_tasklet, rtl8188eu_recv_tasklet,
(unsigned long)padapter);
/* init recv_buf */

3
drivers/staging/rtl8188eu/hal/rtl8188eu_xmit.c
View File

@ -17,8 +17,7 @@ s32 rtw_hal_init_xmit_priv(struct adapter *adapt)
{
struct xmit_priv *pxmitpriv = &adapt->xmitpriv;
tasklet_init(&pxmitpriv->xmit_tasklet,
(void(*)(unsigned long))rtl8188eu_xmit_tasklet,
tasklet_init(&pxmitpriv->xmit_tasklet, rtl8188eu_xmit_tasklet,
(unsigned long)adapt);
return _SUCCESS;
}

2
drivers/staging/rtl8188eu/include/rtl8188e_recv.h
View File

@ -43,7 +43,7 @@ enum rx_packet_type {
};
#define INTERRUPT_MSG_FORMAT_LEN 60
void rtl8188eu_recv_tasklet(void *priv);
void rtl8188eu_recv_tasklet(unsigned long priv);
void rtl8188e_process_phy_info(struct adapter *padapter,
struct recv_frame *prframe);
void update_recvframe_phyinfo_88e(struct recv_frame *fra, struct phy_stat *phy);

2
drivers/staging/rtl8188eu/include/rtl8188e_xmit.h
View File

@ -148,7 +148,7 @@ void rtl8188e_fill_fake_txdesc(struct adapter *padapter, u8 *pDesc,
s32 rtl8188eu_init_xmit_priv(struct adapter *padapter);
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);
bool rtl8188eu_xmitframe_complete(struct adapter *padapter,
struct xmit_priv *pxmitpriv);

8
drivers/staging/rtl8188eu/os_dep/usb_ops_linux.c
View File

@ -773,10 +773,10 @@ void usb_write_port_cancel(struct adapter *padapter)
}
}
void rtl8188eu_recv_tasklet(void *priv)
void rtl8188eu_recv_tasklet(unsigned long priv)
{
struct sk_buff *pskb;
struct adapter *adapt = priv;
struct adapter *adapt = (struct adapter *)priv;
struct recv_priv *precvpriv = &adapt->recvpriv;
while (NULL != (pskb = skb_dequeue(&precvpriv->rx_skb_queue))) {
@ -792,9 +792,9 @@ void rtl8188eu_recv_tasklet(void *priv)
}
}
void rtl8188eu_xmit_tasklet(void *priv)
void rtl8188eu_xmit_tasklet(unsigned long priv)
{
struct adapter *adapt = priv;
struct adapter *adapt = (struct adapter *)priv;
struct xmit_priv *pxmitpriv = &adapt->xmitpriv;
if (check_fwstate(&adapt->mlmepriv, _FW_UNDER_SURVEY))

7
drivers/staging/rtl8192e/rtllib_softmac.c
View File

@ -2044,8 +2044,9 @@ static short rtllib_sta_ps_sleep(struct rtllib_device *ieee, u64 *time)
}
static inline void rtllib_sta_ps(struct rtllib_device *ieee)
static inline void rtllib_sta_ps(unsigned long data)
{
struct rtllib_device *ieee = (struct rtllib_device *)data;
u64 time;
short sleep;
unsigned long flags, flags2;
@ -3027,9 +3028,7 @@ void rtllib_softmac_init(struct rtllib_device *ieee)
spin_lock_init(&ieee->mgmt_tx_lock);
spin_lock_init(&ieee->beacon_lock);
tasklet_init(&ieee->ps_task,
(void(*)(unsigned long)) rtllib_sta_ps,
(unsigned long)ieee);
tasklet_init(&ieee->ps_task, rtllib_sta_ps, (unsigned long)ieee);
}

7
drivers/staging/rtl8192u/ieee80211/ieee80211_softmac.c
View File

@ -1683,8 +1683,9 @@ static short ieee80211_sta_ps_sleep(struct ieee80211_device *ieee, u32 *time_h,
return 1;
}
static inline void ieee80211_sta_ps(struct ieee80211_device *ieee)
static inline void ieee80211_sta_ps(unsigned long data)
{
struct ieee80211_device *ieee = (struct ieee80211_device *)data;
u32 th, tl;
short sleep;
@ -2593,9 +2594,7 @@ void ieee80211_softmac_init(struct ieee80211_device *ieee)
spin_lock_init(&ieee->mgmt_tx_lock);
spin_lock_init(&ieee->beacon_lock);
tasklet_init(&ieee->ps_task,
(void(*)(unsigned long)) ieee80211_sta_ps,
(unsigned long)ieee);
tasklet_init(&ieee->ps_task, ieee80211_sta_ps, (unsigned long)ieee);
}
void ieee80211_softmac_free(struct ieee80211_device *ieee)

8
drivers/staging/rtl8192u/r8192U_core.c
View File

@ -2193,7 +2193,7 @@ static void rtl8192_init_priv_lock(struct r8192_priv *priv)
static void rtl819x_watchdog_wqcallback(struct work_struct *work);
static void rtl8192_irq_rx_tasklet(struct r8192_priv *priv);
static void rtl8192_irq_rx_tasklet(unsigned long data);
/* init tasklet and wait_queue here. only 2.6 above kernel is considered */
#define DRV_NAME "wlan0"
static void rtl8192_init_priv_task(struct net_device *dev)
@ -2214,8 +2214,7 @@ static void rtl8192_init_priv_task(struct net_device *dev)
InitialGainOperateWorkItemCallBack);
INIT_WORK(&priv->qos_activate, rtl8192_qos_activate);
tasklet_init(&priv->irq_rx_tasklet,
(void(*)(unsigned long))rtl8192_irq_rx_tasklet,
tasklet_init(&priv->irq_rx_tasklet, rtl8192_irq_rx_tasklet,
(unsigned long)priv);
}
@ -4655,8 +4654,9 @@ static void rtl8192_rx_cmd(struct sk_buff *skb)
}
}
static void rtl8192_irq_rx_tasklet(struct r8192_priv *priv)
static void rtl8192_irq_rx_tasklet(unsigned long data)
{
struct r8192_priv *priv = (struct r8192_priv *)data;
struct sk_buff *skb;
struct rtl8192_rx_info *info;

9
drivers/staging/rtl8712/rtl8712_recv.c
View File

@ -33,7 +33,7 @@ static u8 bridge_tunnel_header[] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0xf8};
/* Ethernet-II snap header (RFC1042 for most EtherTypes) */
static u8 rfc1042_header[] = {0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00};
static void recv_tasklet(void *priv);
static void recv_tasklet(unsigned long priv);
void r8712_init_recv_priv(struct recv_priv *precvpriv,
struct _adapter *padapter)
@ -65,8 +65,7 @@ void r8712_init_recv_priv(struct recv_priv *precvpriv,
precvbuf++;
}
precvpriv->free_recv_buf_queue_cnt = NR_RECVBUFF;
tasklet_init(&precvpriv->recv_tasklet,
(void(*)(unsigned long))recv_tasklet,
tasklet_init(&precvpriv->recv_tasklet, recv_tasklet,
(unsigned long)padapter);
skb_queue_head_init(&precvpriv->rx_skb_queue);
@ -1078,10 +1077,10 @@ static void recvbuf2recvframe(struct _adapter *padapter, struct sk_buff *pskb)
} while ((transfer_len > 0) && pkt_cnt > 0);
}
static void recv_tasklet(void *priv)
static void recv_tasklet(unsigned long priv)
{
struct sk_buff *pskb;
struct _adapter *padapter = priv;
struct _adapter *padapter = (struct _adapter *)priv;
struct recv_priv *precvpriv = &padapter->recvpriv;
while (NULL != (pskb = skb_dequeue(&precvpriv->rx_skb_queue))) {

5
drivers/staging/rtl8712/rtl871x_xmit.c
View File

@ -143,9 +143,8 @@ int _r8712_init_xmit_priv(struct xmit_priv *pxmitpriv,
INIT_WORK(&padapter->wk_filter_rx_ff0, r8712_SetFilter);
alloc_hwxmits(padapter);
init_hwxmits(pxmitpriv->hwxmits, pxmitpriv->hwxmit_entry);
tasklet_init(&pxmitpriv->xmit_tasklet,
(void(*)(unsigned long))r8712_xmit_bh,
(unsigned long)padapter);
tasklet_init(&pxmitpriv->xmit_tasklet, r8712_xmit_bh,
(unsigned long)padapter);
return 0;
}

2
drivers/staging/rtl8712/rtl871x_xmit.h
View File

@ -277,7 +277,7 @@ int r8712_pre_xmit(struct _adapter *padapter, struct xmit_frame *pxmitframe);
int r8712_xmit_enqueue(struct _adapter *padapter,
struct xmit_frame *pxmitframe);
void r8712_xmit_direct(struct _adapter *padapter, struct xmit_frame *pxmitframe);
void r8712_xmit_bh(void *priv);
void r8712_xmit_bh(unsigned long priv);
void xmitframe_xmitbuf_attach(struct xmit_frame *pxmitframe,
struct xmit_buf *pxmitbuf);

4
drivers/staging/rtl8712/usb_ops_linux.c
View File

@ -308,10 +308,10 @@ void r8712_usb_read_port_cancel(struct _adapter *padapter)
}
}
void r8712_xmit_bh(void *priv)
void r8712_xmit_bh(unsigned long priv)
{
int ret = false;
struct _adapter *padapter = priv;
struct _adapter *padapter = (struct _adapter *)priv;
struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
if (padapter->driver_stopped ||

11
drivers/staging/rtl8723bs/hal/rtl8723bs_recv.c
View File

@ -230,7 +230,7 @@ static inline bool pkt_exceeds_tail(struct recv_priv *precvpriv,
return false;
}
static void rtl8723bs_recv_tasklet(void *priv)
static void rtl8723bs_recv_tasklet(unsigned long priv)
{
struct adapter *padapter;
struct hal_com_data *p_hal_data;
@ -244,7 +244,7 @@ static void rtl8723bs_recv_tasklet(void *priv)
_pkt *pkt_copy = NULL;
u8 shift_sz = 0, rx_report_sz = 0;
padapter = priv;
padapter = (struct adapter *)priv;
p_hal_data = GET_HAL_DATA(padapter);
precvpriv = &padapter->recvpriv;
recv_buf_queue = &precvpriv->recv_buf_pending_queue;
@ -462,11 +462,8 @@ s32 rtl8723bs_init_recv_priv(struct adapter *padapter)
goto initbuferror;
/* 3 2. init tasklet */
tasklet_init(
&precvpriv->recv_tasklet,
(void(*)(unsigned long))rtl8723bs_recv_tasklet,
(unsigned long)padapter
);
tasklet_init(&precvpriv->recv_tasklet, rtl8723bs_recv_tasklet,
(unsigned long)padapter);
goto exit;