Re: [PATCH] staging: rtl8723bs: remove unused variables

[Greg KH <gregkh@linuxfoundation.org>]

On Thu, Apr 08, 2021 at 11:27:02AM +0200, Fabio Aiuto wrote:
> remove declared and assigned unused variables

You need to be a lot more specific here.

> Reported-by: kernel test robot <lkp@intel.com>

For all of these?

> Signed-off-by: Fabio Aiuto <fabioaiuto83@gmail.com>
> ---
>  drivers/staging/rtl8723bs/core/rtw_cmd.c      |  3 ---
>  .../staging/rtl8723bs/include/rtw_security.h  | 18 -------------
>  .../staging/rtl8723bs/os_dep/ioctl_linux.c    | 26 +++----------------
>  3 files changed, 3 insertions(+), 44 deletions(-)
> 
> diff --git a/drivers/staging/rtl8723bs/core/rtw_cmd.c b/drivers/staging/rtl8723bs/core/rtw_cmd.c
> index baf8b1e0f43c..e94eb1138cf1 100644
> --- a/drivers/staging/rtl8723bs/core/rtw_cmd.c
> +++ b/drivers/staging/rtl8723bs/core/rtw_cmd.c
> @@ -387,7 +387,6 @@ int rtw_cmd_thread(void *context)
>  	u8 ret;
>  	struct cmd_obj *pcmd;
>  	u8 *pcmdbuf;
> -	unsigned long cmd_start_time;
>  	u8 (*cmd_hdl)(struct adapter *padapter, u8 *pbuf);
>  	void (*pcmd_callback)(struct adapter *dev, struct cmd_obj *pcmd);
>  	struct adapter *padapter = context;
> @@ -438,8 +437,6 @@ int rtw_cmd_thread(void *context)
>  			continue;
>  		}
>  
> -		cmd_start_time = jiffies;
> -
>  		if (rtw_cmd_filter(pcmdpriv, pcmd) == _FAIL) {
>  			pcmd->res = H2C_DROPPED;
>  			goto post_process;

How about one patch per variable that is being removed as this was fine,
but others below are not ok.

> diff --git a/drivers/staging/rtl8723bs/include/rtw_security.h b/drivers/staging/rtl8723bs/include/rtw_security.h
> index b71f0959108b..5c787e999aab 100644
> --- a/drivers/staging/rtl8723bs/include/rtw_security.h
> +++ b/drivers/staging/rtl8723bs/include/rtw_security.h
> @@ -332,24 +332,6 @@ static inline u32 rotr(u32 val, int bits)
>  /* This is based on SHA256 implementation in LibTomCrypt that was released into
>   * public domain by Tom St Denis. */
>  
> -/* the K array */
> -static const unsigned long K[64] = {
> -	0x428a2f98UL, 0x71374491UL, 0xb5c0fbcfUL, 0xe9b5dba5UL, 0x3956c25bUL,
> -	0x59f111f1UL, 0x923f82a4UL, 0xab1c5ed5UL, 0xd807aa98UL, 0x12835b01UL,
> -	0x243185beUL, 0x550c7dc3UL, 0x72be5d74UL, 0x80deb1feUL, 0x9bdc06a7UL,
> -	0xc19bf174UL, 0xe49b69c1UL, 0xefbe4786UL, 0x0fc19dc6UL, 0x240ca1ccUL,
> -	0x2de92c6fUL, 0x4a7484aaUL, 0x5cb0a9dcUL, 0x76f988daUL, 0x983e5152UL,
> -	0xa831c66dUL, 0xb00327c8UL, 0xbf597fc7UL, 0xc6e00bf3UL, 0xd5a79147UL,
> -	0x06ca6351UL, 0x14292967UL, 0x27b70a85UL, 0x2e1b2138UL, 0x4d2c6dfcUL,
> -	0x53380d13UL, 0x650a7354UL, 0x766a0abbUL, 0x81c2c92eUL, 0x92722c85UL,
> -	0xa2bfe8a1UL, 0xa81a664bUL, 0xc24b8b70UL, 0xc76c51a3UL, 0xd192e819UL,
> -	0xd6990624UL, 0xf40e3585UL, 0x106aa070UL, 0x19a4c116UL, 0x1e376c08UL,
> -	0x2748774cUL, 0x34b0bcb5UL, 0x391c0cb3UL, 0x4ed8aa4aUL, 0x5b9cca4fUL,
> -	0x682e6ff3UL, 0x748f82eeUL, 0x78a5636fUL, 0x84c87814UL, 0x8cc70208UL,
> -	0x90befffaUL, 0xa4506cebUL, 0xbef9a3f7UL, 0xc67178f2UL
> -};
> -
> -
>  /* Various logical functions */
>  #define RORc(x, y) \
>  (((((unsigned long) (x) & 0xFFFFFFFFUL) >> (unsigned long) ((y) & 31)) | \
> diff --git a/drivers/staging/rtl8723bs/os_dep/ioctl_linux.c b/drivers/staging/rtl8723bs/os_dep/ioctl_linux.c
> index a9820d813d8b..8d29ca9ba67f 100644
> --- a/drivers/staging/rtl8723bs/os_dep/ioctl_linux.c
> +++ b/drivers/staging/rtl8723bs/os_dep/ioctl_linux.c
> @@ -33,10 +33,6 @@
>  static u32 rtw_rates[] = {1000000, 2000000, 5500000, 11000000,
>  	6000000, 9000000, 12000000, 18000000, 24000000, 36000000, 48000000, 54000000};
>  
> -static const char * const iw_operation_mode[] = {
> -	"Auto", "Ad-Hoc", "Managed",  "Master", "Repeater", "Secondary", "Monitor"
> -};
> -
>  void indicate_wx_scan_complete_event(struct adapter *padapter)
>  {
>  	union iwreq_data wrqu;
> @@ -1125,7 +1121,6 @@ static int rtw_wx_set_mlme(struct net_device *dev,
>  			     union iwreq_data *wrqu, char *extra)
>  {
>  	int ret = 0;
> -	u16 reason;
>  	struct adapter *padapter = rtw_netdev_priv(dev);
>  	struct iw_mlme *mlme = (struct iw_mlme *)extra;
>  
> @@ -1133,8 +1128,6 @@ static int rtw_wx_set_mlme(struct net_device *dev,
>  	if (mlme == NULL)
>  		return -1;
>  
> -	reason = mlme->reason_code;
> -
>  	switch (mlme->cmd) {
>  	case IW_MLME_DEAUTH:
>  		if (!rtw_set_802_11_disassociate(padapter))
> @@ -2440,7 +2433,6 @@ static int rtw_dbg_port(struct net_device *dev,
>  	u8 major_cmd, minor_cmd;
>  	u16 arg;
>  	u32 extra_arg, *pdata, val32;
> -	struct sta_info *psta;
>  	struct adapter *padapter = rtw_netdev_priv(dev);
>  	struct mlme_priv *pmlmepriv = &(padapter->mlmepriv);
>  	struct mlme_ext_priv *pmlmeext = &padapter->mlmeextpriv;
> @@ -2542,15 +2534,7 @@ static int rtw_dbg_port(struct net_device *dev,
>  
>  					break;
>  				case 0x05:
> -					psta = rtw_get_stainfo(pstapriv, cur_network->network.MacAddress);
> -					if (psta) {
> -						int i;
> -						struct recv_reorder_ctrl *preorder_ctrl;
> -
> -						for (i = 0; i < 16; i++)
> -							preorder_ctrl = &psta->recvreorder_ctrl[i];
> -
> -					}
> +					rtw_get_stainfo(pstapriv, cur_network->network.MacAddress);

Odd, but ok.

>  					break;
>  				case 0x06:
>  					{
> @@ -2568,9 +2552,8 @@ static int rtw_dbg_port(struct net_device *dev,
>  					break;
>  				case 0x09:
>  					{
> -						int i, j;
> +						int i;
>  						struct list_head	*plist, *phead;
> -						struct recv_reorder_ctrl *preorder_ctrl;
>  
>  						spin_lock_bh(&pstapriv->sta_hash_lock);
>  
> @@ -2579,13 +2562,10 @@ static int rtw_dbg_port(struct net_device *dev,
>  							plist = get_next(phead);
>  
>  							while (phead != plist) {
> -								psta = container_of(plist, struct sta_info, hash_list);
> +								container_of(plist, struct sta_info, hash_list);

Did that build???  If so, that's obviously not correct.

>  
>  								plist = get_next(plist);

So you now have a loop that does nothing?

thanks,

greg k-h