[linux-next:master 11193/12612] drivers/net/wireless/mediatek/mt76/mt7921/mac.c:829:14: sparse: sparse: cast to restricted __le32

[linux-next:master 11193/12612] drivers/net/wireless/mediatek/mt76/mt7921/mac.c:829:14: sparse: sparse: cast to restricted __le32

[kernel test robot]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   d61c8b66c84080ecf8f9f4d9272ab4ec78029a59
commit: 3cce2b98e0241ff238e25eca1dbb480534a7695a [11193/12612] mt76: mt7921: introduce mac tx done handling
config: powerpc-allyesconfig (attached as .config)
compiler: powerpc64-linux-gcc (GCC) 9.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.3-341-g8af24329-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=3cce2b98e0241ff238e25eca1dbb480534a7695a
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout 3cce2b98e0241ff238e25eca1dbb480534a7695a
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' W=1 ARCH=powerpc 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>


sparse warnings: (new ones prefixed by >>)
>> drivers/net/wireless/mediatek/mt76/mt7921/mac.c:829:14: sparse: sparse: cast to restricted __le32
>> drivers/net/wireless/mediatek/mt76/mt7921/mac.c:829:14: sparse: sparse: restricted __le32 degrades to integer
>> drivers/net/wireless/mediatek/mt76/mt7921/mac.c:829:14: sparse: sparse: restricted __le32 degrades to integer

vim +829 drivers/net/wireless/mediatek/mt76/mt7921/mac.c

   751	
   752	void mt7921_mac_write_txwi(struct mt7921_dev *dev, __le32 *txwi,
   753				   struct sk_buff *skb, struct mt76_wcid *wcid,
   754				   struct ieee80211_key_conf *key, bool beacon)
   755	{
   756		struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
   757		struct ieee80211_vif *vif = info->control.vif;
   758		struct mt76_phy *mphy = &dev->mphy;
   759		u8 pid, p_fmt, q_idx, omac_idx = 0, wmm_idx = 0;
   760		bool is_8023 = info->flags & IEEE80211_TX_CTL_HW_80211_ENCAP;
   761		u16 tx_count = 15;
   762		u32 val;
   763	
   764		if (vif) {
   765			struct mt76_vif *mvif = (struct mt76_vif *)vif->drv_priv;
   766	
   767			omac_idx = mvif->omac_idx;
   768			wmm_idx = mvif->wmm_idx;
   769		}
   770	
   771		if (beacon) {
   772			p_fmt = MT_TX_TYPE_FW;
   773			q_idx = MT_LMAC_BCN0;
   774		} else if (skb_get_queue_mapping(skb) >= MT_TXQ_PSD) {
   775			p_fmt = MT_TX_TYPE_CT;
   776			q_idx = MT_LMAC_ALTX0;
   777		} else {
   778			p_fmt = MT_TX_TYPE_CT;
   779			q_idx = wmm_idx * MT7921_MAX_WMM_SETS +
   780				mt7921_lmac_mapping(dev, skb_get_queue_mapping(skb));
   781		}
   782	
   783		val = FIELD_PREP(MT_TXD0_TX_BYTES, skb->len + MT_TXD_SIZE) |
   784		      FIELD_PREP(MT_TXD0_PKT_FMT, p_fmt) |
   785		      FIELD_PREP(MT_TXD0_Q_IDX, q_idx);
   786		txwi[0] = cpu_to_le32(val);
   787	
   788		val = MT_TXD1_LONG_FORMAT |
   789		      FIELD_PREP(MT_TXD1_WLAN_IDX, wcid->idx) |
   790		      FIELD_PREP(MT_TXD1_OWN_MAC, omac_idx);
   791	
   792		txwi[1] = cpu_to_le32(val);
   793		txwi[2] = 0;
   794	
   795		val = FIELD_PREP(MT_TXD3_REM_TX_COUNT, tx_count);
   796		if (key)
   797			val |= MT_TXD3_PROTECT_FRAME;
   798		if (info->flags & IEEE80211_TX_CTL_NO_ACK)
   799			val |= MT_TXD3_NO_ACK;
   800	
   801		txwi[3] = cpu_to_le32(val);
   802		txwi[4] = 0;
   803		txwi[5] = 0;
   804		txwi[6] = 0;
   805		txwi[7] = wcid->amsdu ? cpu_to_le32(MT_TXD7_HW_AMSDU) : 0;
   806	
   807		if (is_8023)
   808			mt7921_mac_write_txwi_8023(dev, txwi, skb, wcid);
   809		else
   810			mt7921_mac_write_txwi_80211(dev, txwi, skb, key);
   811	
   812		if (txwi[2] & cpu_to_le32(MT_TXD2_FIX_RATE)) {
   813			u16 rate;
   814	
   815			/* hardware won't add HTC for mgmt/ctrl frame */
   816			txwi[2] |= cpu_to_le32(MT_TXD2_HTC_VLD);
   817	
   818			if (mphy->chandef.chan->band == NL80211_BAND_5GHZ)
   819				rate = MT7921_5G_RATE_DEFAULT;
   820			else
   821				rate = MT7921_2G_RATE_DEFAULT;
   822	
   823			val = MT_TXD6_FIXED_BW |
   824			      FIELD_PREP(MT_TXD6_TX_RATE, rate);
   825			txwi[6] |= cpu_to_le32(val);
   826			txwi[3] |= cpu_to_le32(MT_TXD3_BA_DISABLE);
   827		}
   828	
 > 829		if ((FIELD_GET(MT_TXD2_FRAME_TYPE, txwi[2]) &
   830			(IEEE80211_FTYPE_DATA >> 2)) &&
   831			mt7921_next_txs_timeout(dev, wcid)) {
   832			mt7921_next_txs_set(dev, wcid, 250);
   833			pid = mt7921_next_pid(dev, wcid);
   834			val = MT_TXD5_TX_STATUS_MCU | FIELD_PREP(MT_TXD5_PID, pid);
   835			txwi[5] |= cpu_to_le32(val);
   836		}
   837	}
   838	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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