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Date: Fri, 17 Sep 2021 21:09:51 +0530
From: Saurav Girepunje <saurav.girepunje@...il.com>
To: Phillip Potter <phil@...lpotter.co.uk>
Cc: saurav.girepunje@...mail.com,
Larry Finger <Larry.Finger@...inger.net>,
Martin Kaiser <martin@...ser.cx>,
Greg KH <gregkh@...uxfoundation.org>,
Michael Straube <straube.linux@...il.com>,
"open list:STAGING SUBSYSTEM" <linux-staging@...ts.linux.dev>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] staging: r8188eu: os_dep: remove unused function
rtw_android_priv_cmd
On 13/09/21 11:10 pm, Phillip Potter wrote:
> On Mon, 13 Sept 2021 at 17:24, Greg KH <gregkh@...uxfoundation.org> wrote:
>>
>> On Sun, Sep 12, 2021 at 10:46:12PM +0530, Saurav Girepunje wrote:
>>> Remove unused function rtw_android_priv_cmd.
>>>
>>> Signed-off-by: Saurav Girepunje <saurav.girepunje@...il.com>
>>> ---
>>> drivers/staging/r8188eu/include/rtw_android.h | 1 -
>>> drivers/staging/r8188eu/os_dep/rtw_android.c | 138 ------------------
>>> 2 files changed, 139 deletions(-)
>>>
>>> diff --git a/drivers/staging/r8188eu/include/rtw_android.h b/drivers/staging/r8188eu/include/rtw_android.h
>>> index f60cf1c82984..86e3ac5f7955 100644
>>> --- a/drivers/staging/r8188eu/include/rtw_android.h
>>> +++ b/drivers/staging/r8188eu/include/rtw_android.h
>>> @@ -42,6 +42,5 @@ enum ANDROID_WIFI_CMD {
>>> };
>>>
>>> int rtw_android_cmdstr_to_num(char *cmdstr);
>>> -int rtw_android_priv_cmd(struct net_device *net, struct ifreq *ifr, int cmd);
>>>
>>> #endif /* __RTW_ANDROID_H__ */
>>> diff --git a/drivers/staging/r8188eu/os_dep/rtw_android.c b/drivers/staging/r8188eu/os_dep/rtw_android.c
>>> index 010d529c8982..bd76177d60f9 100644
>>> --- a/drivers/staging/r8188eu/os_dep/rtw_android.c
>>> +++ b/drivers/staging/r8188eu/os_dep/rtw_android.c
>>> @@ -133,141 +133,3 @@ static int rtw_android_set_block(struct net_device *net, char *command,
>>> return 0;
>>> }
>>>
>>> -int rtw_android_priv_cmd(struct net_device *net, struct ifreq *ifr, int cmd)
>>> -{
>>> - int ret = 0;
>>> - char *command = NULL;
>>> - int cmd_num;
>>> - int bytes_written = 0;
>>> - struct android_wifi_priv_cmd priv_cmd;
>>> -
>>> - if (!ifr->ifr_data) {
>>> - ret = -EINVAL;
>>> - goto exit;
>>> - }
>>> - if (copy_from_user(&priv_cmd, ifr->ifr_data,
>>> - sizeof(struct android_wifi_priv_cmd))) {
>>> - ret = -EFAULT;
>>> - goto exit;
>>> - }
>>> - command = kmalloc(priv_cmd.total_len, GFP_KERNEL);
>>> - if (!command) {
>>> - DBG_88E("%s: failed to allocate memory\n", __func__);
>>> - ret = -ENOMEM;
>>> - goto exit;
>>> - }
>>> - if (!access_ok(priv_cmd.buf, priv_cmd.total_len)) {
>>> - DBG_88E("%s: failed to access memory\n", __func__);
>>> - ret = -EFAULT;
>>> - goto exit;
>>> - }
>>> - if (copy_from_user(command, (char __user *)priv_cmd.buf,
>>> - priv_cmd.total_len)) {
>>> - ret = -EFAULT;
>>> - goto exit;
>>> - }
>>> - DBG_88E("%s: Android private cmd \"%s\" on %s\n",
>>> - __func__, command, ifr->ifr_name);
>>> - cmd_num = rtw_android_cmdstr_to_num(command);
>>> - switch (cmd_num) {
>>> - case ANDROID_WIFI_CMD_START:
>>> - goto response;
>>> - case ANDROID_WIFI_CMD_SETFWPATH:
>>> - goto response;
>>> - }
>>> - if (!g_wifi_on) {
>>> - DBG_88E("%s: Ignore private cmd \"%s\" - iface %s is down\n",
>>> - __func__, command, ifr->ifr_name);
>>> - ret = 0;
>>> - goto exit;
>>> - }
>>> - switch (cmd_num) {
>>> - case ANDROID_WIFI_CMD_STOP:
>>> - break;
>>> - case ANDROID_WIFI_CMD_SCAN_ACTIVE:
>>> - break;
>>> - case ANDROID_WIFI_CMD_SCAN_PASSIVE:
>>> - break;
>>> - case ANDROID_WIFI_CMD_RSSI:
>>> - bytes_written = rtw_android_get_rssi(net, command,
>>> - priv_cmd.total_len);
>>> - break;
>>> - case ANDROID_WIFI_CMD_LINKSPEED:
>>> - bytes_written = rtw_android_get_link_speed(net, command,
>>> - priv_cmd.total_len);
>>> - break;
>>> - case ANDROID_WIFI_CMD_MACADDR:
>>> - bytes_written = rtw_android_get_macaddr(net, command,
>>> - priv_cmd.total_len);
>>> - break;
>>> - case ANDROID_WIFI_CMD_BLOCK:
>>> - bytes_written = rtw_android_set_block(net, command,
>>> - priv_cmd.total_len);
>>> - break;
>>> - case ANDROID_WIFI_CMD_RXFILTER_START:
>>> - break;
>>> - case ANDROID_WIFI_CMD_RXFILTER_STOP:
>>> - break;
>>> - case ANDROID_WIFI_CMD_RXFILTER_ADD:
>>> - break;
>>> - case ANDROID_WIFI_CMD_RXFILTER_REMOVE:
>>> - break;
>>> - case ANDROID_WIFI_CMD_BTCOEXSCAN_START:
>>> - /* TBD: BTCOEXSCAN-START */
>>> - break;
>>> - case ANDROID_WIFI_CMD_BTCOEXSCAN_STOP:
>>> - /* TBD: BTCOEXSCAN-STOP */
>>> - break;
>>> - case ANDROID_WIFI_CMD_BTCOEXMODE:
>>> - break;
>>> - case ANDROID_WIFI_CMD_SETSUSPENDOPT:
>>> - break;
>>> - case ANDROID_WIFI_CMD_SETBAND:
>>> - break;
>>> - case ANDROID_WIFI_CMD_GETBAND:
>>> - break;
>>> - case ANDROID_WIFI_CMD_COUNTRY:
>>> - bytes_written = android_set_cntry(net, command,
>>> - priv_cmd.total_len);
>>> - break;
>>> - case ANDROID_WIFI_CMD_P2P_DEV_ADDR:
>>> - bytes_written = android_get_p2p_addr(net, command,
>>> - priv_cmd.total_len);
>>> - break;
>>> - case ANDROID_WIFI_CMD_P2P_SET_NOA:
>>> - break;
>>> - case ANDROID_WIFI_CMD_P2P_GET_NOA:
>>> - break;
>>> - case ANDROID_WIFI_CMD_P2P_SET_PS:
>>> - break;
>>> - default:
>>> - DBG_88E("Unknown PRIVATE command %s - ignored\n", command);
>>> - snprintf(command, 3, "OK");
>>> - bytes_written = strlen("OK");
>>> - }
>>> -
>>> -response:
>>> - if (bytes_written >= 0) {
>>> - if ((bytes_written == 0) && (priv_cmd.total_len > 0))
>>> - command[0] = '\0';
>>> - if (bytes_written >= priv_cmd.total_len) {
>>> - DBG_88E("%s: bytes_written = %d\n", __func__,
>>> - bytes_written);
>>> - bytes_written = priv_cmd.total_len;
>>> - } else {
>>> - bytes_written++;
>>> - }
>>> - priv_cmd.used_len = bytes_written;
>>> - if (copy_to_user((char __user *)priv_cmd.buf, command,
>>> - bytes_written)) {
>>> - DBG_88E("%s: failed to copy data to user buffer\n",
>>> - __func__);
>>> - ret = -EFAULT;
>>> - }
>>> - } else {
>>> - ret = bytes_written;
>>> - }
>>> -exit:
>>> - kfree(command);
>>> - return ret;
>>> -}
>>> --
>>> 2.32.0
>>>
>>>
>>
>> Does not apply to my tree :(
>
> Dear Saurav,
>
> This code is already gone - Linus deleted it during a merge
> conflict resolution. I am planning to add it back soon though
> and reconnect with the newer siocdevprivate approach.
>
> Regards,
> Phil
>
Thanks Phil for information.
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