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Date: Sat, 30 Apr 2022 00:28:59 -0400
From: Charlie Sands <sandsch@...thvilleschools.net>
To: gregkh@...uxfoundation.org
Cc: Larry.Finger@...inger.net, phil@...lpotter.co.uk,
linux-staging@...ts.linux.dev, linux-kernel@...r.kernel.org,
paskripkin@...il.com, straube.linux@...il.com,
dan.carpenter@...cle.com, fmdefrancesco@...il.com
Subject: [PATCH V4] staging: r8188eu: Remove broken rtw_p2p_get function.
Removes broken and unsafe rtw_p2p_get function and all of the code
associated with it from the r8188eu driver.
Signed-off-by: Charlie Sands <charlies256@...tonmail.com>
---
Follow up to the patch called "staging: r8188eu: Fix unsafe memory access
by memcmp."
V2: Fixed checkpatch.pl warning and changed variable name as suggested
by Greg K. H. and improved error checking on the "copy_from_user" function as
suggested by Pavel Skripkin.
V3: Return -EFAULT from the function when there is a memory error while
moving it from user space to kernel space and fix incorrect subject from V2
V4: Updated commit message and changes to reflect those sugested by Dan
Carpenter.
drivers/staging/r8188eu/os_dep/ioctl_linux.c | 136 +------------------
1 file changed, 1 insertion(+), 135 deletions(-)
diff --git a/drivers/staging/r8188eu/os_dep/ioctl_linux.c b/drivers/staging/r8188eu/os_dep/ioctl_linux.c
index eb9375b0c660..51f1a464d5bd 100644
--- a/drivers/staging/r8188eu/os_dep/ioctl_linux.c
+++ b/drivers/staging/r8188eu/os_dep/ioctl_linux.c
@@ -2363,114 +2363,6 @@ static void rtw_p2p_setDN(struct net_device *dev,
pwdinfo->device_name_len = wrqu->data.length - 1;
}
-static void rtw_p2p_get_status(struct net_device *dev,
- struct iw_request_info *info,
- union iwreq_data *wrqu, char *extra)
-{
- struct adapter *padapter = (struct adapter *)rtw_netdev_priv(dev);
- struct wifidirect_info *pwdinfo = &padapter->wdinfo;
-
- /* Commented by Albert 2010/10/12 */
- /* Because of the output size limitation, I had removed the "Role" information. */
- /* About the "Role" information, we will use the new private IOCTL to get the "Role" information. */
- sprintf(extra, "\n\nStatus =%.2d\n", rtw_p2p_state(pwdinfo));
- wrqu->data.length = strlen(extra);
-}
-
-/* Commented by Albert 20110520 */
-/* This function will return the config method description */
-/* This config method description will show us which config method the remote P2P device is intended to use */
-/* by sending the provisioning discovery request frame. */
-
-static void rtw_p2p_get_req_cm(struct net_device *dev,
- struct iw_request_info *info,
- union iwreq_data *wrqu, char *extra)
-{
- struct adapter *padapter = (struct adapter *)rtw_netdev_priv(dev);
- struct wifidirect_info *pwdinfo = &padapter->wdinfo;
-
- sprintf(extra, "\n\nCM =%s\n", pwdinfo->rx_prov_disc_info.strconfig_method_desc_of_prov_disc_req);
- wrqu->data.length = strlen(extra);
-}
-
-static void rtw_p2p_get_role(struct net_device *dev,
- struct iw_request_info *info,
- union iwreq_data *wrqu, char *extra)
-{
- struct adapter *padapter = (struct adapter *)rtw_netdev_priv(dev);
- struct wifidirect_info *pwdinfo = &padapter->wdinfo;
-
- sprintf(extra, "\n\nRole =%.2d\n", rtw_p2p_role(pwdinfo));
- wrqu->data.length = strlen(extra);
-}
-
-static void rtw_p2p_get_peer_ifaddr(struct net_device *dev,
- struct iw_request_info *info,
- union iwreq_data *wrqu, char *extra)
-{
- struct adapter *padapter = (struct adapter *)rtw_netdev_priv(dev);
- struct wifidirect_info *pwdinfo = &padapter->wdinfo;
-
- sprintf(extra, "\nMAC %pM",
- pwdinfo->p2p_peer_interface_addr);
- wrqu->data.length = strlen(extra);
-}
-
-static void rtw_p2p_get_peer_devaddr(struct net_device *dev,
- struct iw_request_info *info,
- union iwreq_data *wrqu, char *extra)
-
-{
- struct adapter *padapter = (struct adapter *)rtw_netdev_priv(dev);
- struct wifidirect_info *pwdinfo = &padapter->wdinfo;
-
- sprintf(extra, "\n%pM",
- pwdinfo->rx_prov_disc_info.peerDevAddr);
- wrqu->data.length = strlen(extra);
-}
-
-static void rtw_p2p_get_peer_devaddr_by_invitation(struct net_device *dev,
- struct iw_request_info *info,
- union iwreq_data *wrqu,
- char *extra)
-
-{
- struct adapter *padapter = (struct adapter *)rtw_netdev_priv(dev);
- struct wifidirect_info *pwdinfo = &padapter->wdinfo;
-
- sprintf(extra, "\nMAC %pM",
- pwdinfo->p2p_peer_device_addr);
- wrqu->data.length = strlen(extra);
-}
-
-static void rtw_p2p_get_groupid(struct net_device *dev,
- struct iw_request_info *info,
- union iwreq_data *wrqu, char *extra)
-
-{
- struct adapter *padapter = (struct adapter *)rtw_netdev_priv(dev);
- struct wifidirect_info *pwdinfo = &padapter->wdinfo;
-
- sprintf(extra, "\n%.2X:%.2X:%.2X:%.2X:%.2X:%.2X %s",
- pwdinfo->groupid_info.go_device_addr[0], pwdinfo->groupid_info.go_device_addr[1],
- pwdinfo->groupid_info.go_device_addr[2], pwdinfo->groupid_info.go_device_addr[3],
- pwdinfo->groupid_info.go_device_addr[4], pwdinfo->groupid_info.go_device_addr[5],
- pwdinfo->groupid_info.ssid);
- wrqu->data.length = strlen(extra);
-}
-
-static void rtw_p2p_get_op_ch(struct net_device *dev,
- struct iw_request_info *info,
- union iwreq_data *wrqu, char *extra)
-
-{
- struct adapter *padapter = (struct adapter *)rtw_netdev_priv(dev);
- struct wifidirect_info *pwdinfo = &padapter->wdinfo;
-
- sprintf(extra, "\n\nOp_ch =%.2d\n", pwdinfo->operating_channel);
- wrqu->data.length = strlen(extra);
-}
-
static int rtw_p2p_get_wps_configmethod(struct net_device *dev,
struct iw_request_info *info,
union iwreq_data *wrqu, char *extra)
@@ -3229,32 +3121,6 @@ static int rtw_p2p_set(struct net_device *dev,
return ret;
}
-static int rtw_p2p_get(struct net_device *dev,
- struct iw_request_info *info,
- union iwreq_data *wrqu, char *extra)
-{
- if (!memcmp(wrqu->data.pointer, "status", 6)) {
- rtw_p2p_get_status(dev, info, wrqu, extra);
- } else if (!memcmp(wrqu->data.pointer, "role", 4)) {
- rtw_p2p_get_role(dev, info, wrqu, extra);
- } else if (!memcmp(wrqu->data.pointer, "peer_ifa", 8)) {
- rtw_p2p_get_peer_ifaddr(dev, info, wrqu, extra);
- } else if (!memcmp(wrqu->data.pointer, "req_cm", 6)) {
- rtw_p2p_get_req_cm(dev, info, wrqu, extra);
- } else if (!memcmp(wrqu->data.pointer, "peer_deva", 9)) {
- /* Get the P2P device address when receiving the provision discovery request frame. */
- rtw_p2p_get_peer_devaddr(dev, info, wrqu, extra);
- } else if (!memcmp(wrqu->data.pointer, "group_id", 8)) {
- rtw_p2p_get_groupid(dev, info, wrqu, extra);
- } else if (!memcmp(wrqu->data.pointer, "peer_deva_inv", 9)) {
- /* Get the P2P device address when receiving the P2P Invitation request frame. */
- rtw_p2p_get_peer_devaddr_by_invitation(dev, info, wrqu, extra);
- } else if (!memcmp(wrqu->data.pointer, "op_ch", 5)) {
- rtw_p2p_get_op_ch(dev, info, wrqu, extra);
- }
- return 0;
-}
-
static int rtw_p2p_get2(struct net_device *dev,
struct iw_request_info *info,
union iwreq_data *wrqu, char *extra)
@@ -3919,7 +3785,7 @@ NULL, /* 0x03 */
NULL, /* 0x0F */
rtw_p2p_set, /* 0x10 */
- rtw_p2p_get, /* 0x11 */
+ NULL, /* 0x11 */
rtw_p2p_get2, /* 0x12 */
NULL, /* 0x13 */
--
2.36.0
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