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From:   Michael Straube <straube.linux@gmail.com>
To:     gregkh@linuxfoundation.org
Cc:     philipp.g.hortmann@gmail.com, linux-staging@lists.linux.dev,
        linux-kernel@vger.kernel.org,
        Michael Straube <straube.linux@gmail.com>
Subject: [PATCH] staging: rtl8192e: clean up comparisons to NULL
Date:   Sat, 21 Oct 2023 14:19:47 +0200
Message-ID: <20231021121947.14516-1-straube.linux@gmail.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

Clean up comparisons to NULL to improve readability.
Reported by checkpatch.

if (x == NULL) -> if (!x)
if (x != NULL) -> if (x)

Signed-off-by: Michael Straube <straube.linux@gmail.com>
---
Compile tested only, due to missing hardware.

 .../staging/rtl8192e/rtl8192e/r8192E_phy.c    |  2 +-
 drivers/staging/rtl8192e/rtl8192e/rtl_cam.c   |  2 +-
 drivers/staging/rtl8192e/rtl8192e/rtl_wx.c    |  2 +-
 drivers/staging/rtl8192e/rtllib_crypt_ccmp.c  |  2 +-
 drivers/staging/rtl8192e/rtllib_crypt_wep.c   |  2 +-
 drivers/staging/rtl8192e/rtllib_rx.c          | 24 +++++++++----------
 drivers/staging/rtl8192e/rtllib_softmac.c     |  2 +-
 7 files changed, 17 insertions(+), 19 deletions(-)

diff --git a/drivers/staging/rtl8192e/rtl8192e/r8192E_phy.c b/drivers/staging/rtl8192e/rtl8192e/r8192E_phy.c
index bc06c2cab35d..a5e16bf99cd6 100644
--- a/drivers/staging/rtl8192e/rtl8192e/r8192E_phy.c
+++ b/drivers/staging/rtl8192e/rtl8192e/r8192E_phy.c
@@ -513,7 +513,7 @@ static u8 _rtl92e_phy_set_sw_chnl_cmd_array(struct net_device *dev,
 {
 	struct sw_chnl_cmd *pCmd;
 
-	if (CmdTable == NULL) {
+	if (!CmdTable) {
 		netdev_err(dev, "%s(): CmdTable cannot be NULL.\n", __func__);
 		return false;
 	}
diff --git a/drivers/staging/rtl8192e/rtl8192e/rtl_cam.c b/drivers/staging/rtl8192e/rtl8192e/rtl_cam.c
index 9b280cee0ac1..76ec4ed967c4 100644
--- a/drivers/staging/rtl8192e/rtl8192e/rtl_cam.c
+++ b/drivers/staging/rtl8192e/rtl8192e/rtl_cam.c
@@ -112,7 +112,7 @@ void rtl92e_set_key(struct net_device *dev, u8 EntryNo, u8 KeyIndex,
 			rtl92e_writel(dev, WCAMI, TargetContent);
 			rtl92e_writel(dev, RWCAM, TargetCommand);
 		} else {
-			if (KeyContent != NULL) {
+			if (KeyContent) {
 				rtl92e_writel(dev, WCAMI,
 					      (u32)(*(KeyContent + i - 2)));
 				rtl92e_writel(dev, RWCAM, TargetCommand);
diff --git a/drivers/staging/rtl8192e/rtl8192e/rtl_wx.c b/drivers/staging/rtl8192e/rtl8192e/rtl_wx.c
index ec8e7d5fe634..4371ab1239ee 100644
--- a/drivers/staging/rtl8192e/rtl8192e/rtl_wx.c
+++ b/drivers/staging/rtl8192e/rtl8192e/rtl_wx.c
@@ -805,7 +805,7 @@ static int _rtl92e_wx_get_gen_ie(struct net_device *dev,
 	struct r8192_priv *priv = rtllib_priv(dev);
 	struct rtllib_device *ieee = priv->rtllib;
 
-	if (ieee->wpa_ie_len == 0 || ieee->wpa_ie == NULL) {
+	if (ieee->wpa_ie_len == 0 || !ieee->wpa_ie) {
 		data->data.length = 0;
 		return 0;
 	}
diff --git a/drivers/staging/rtl8192e/rtllib_crypt_ccmp.c b/drivers/staging/rtl8192e/rtllib_crypt_ccmp.c
index 5621261d66b9..cbb8c8dbe9b0 100644
--- a/drivers/staging/rtl8192e/rtllib_crypt_ccmp.c
+++ b/drivers/staging/rtl8192e/rtllib_crypt_ccmp.c
@@ -52,7 +52,7 @@ static void *rtllib_ccmp_init(int key_idx)
 	struct rtllib_ccmp_data *priv;
 
 	priv = kzalloc(sizeof(*priv), GFP_ATOMIC);
-	if (priv == NULL)
+	if (!priv)
 		goto fail;
 	priv->key_idx = key_idx;
 
diff --git a/drivers/staging/rtl8192e/rtllib_crypt_wep.c b/drivers/staging/rtl8192e/rtllib_crypt_wep.c
index 062285e4d939..21c2b7666d6f 100644
--- a/drivers/staging/rtl8192e/rtllib_crypt_wep.c
+++ b/drivers/staging/rtl8192e/rtllib_crypt_wep.c
@@ -35,7 +35,7 @@ static void *prism2_wep_init(int keyidx)
 		return NULL;
 
 	priv = kzalloc(sizeof(*priv), GFP_ATOMIC);
-	if (priv == NULL)
+	if (!priv)
 		return NULL;
 	priv->key_idx = keyidx;
 
diff --git a/drivers/staging/rtl8192e/rtllib_rx.c b/drivers/staging/rtl8192e/rtllib_rx.c
index 124c1651856b..ecaa4dec3f94 100644
--- a/drivers/staging/rtl8192e/rtllib_rx.c
+++ b/drivers/staging/rtl8192e/rtllib_rx.c
@@ -63,7 +63,7 @@ rtllib_frag_cache_find(struct rtllib_device *ieee, unsigned int seq,
 
 	for (i = 0; i < RTLLIB_FRAG_CACHE_LEN; i++) {
 		entry = &ieee->frag_cache[tid][i];
-		if (entry->skb != NULL &&
+		if (entry->skb &&
 		    time_after(jiffies, entry->first_frag_time + 2 * HZ)) {
 			netdev_dbg(ieee->dev,
 				   "expiring fragment cache entry seq=%u last_frag=%u\n",
@@ -72,7 +72,7 @@ rtllib_frag_cache_find(struct rtllib_device *ieee, unsigned int seq,
 			entry->skb = NULL;
 		}
 
-		if (entry->skb != NULL && entry->seq == seq &&
+		if (entry->skb && entry->seq == seq &&
 		    (entry->last_frag + 1 == frag || frag == -1) &&
 		    memcmp(entry->src_addr, src, ETH_ALEN) == 0 &&
 		    memcmp(entry->dst_addr, dst, ETH_ALEN) == 0)
@@ -130,7 +130,7 @@ rtllib_frag_cache_get(struct rtllib_device *ieee,
 		if (ieee->frag_next_idx[tid] >= RTLLIB_FRAG_CACHE_LEN)
 			ieee->frag_next_idx[tid] = 0;
 
-		if (entry->skb != NULL)
+		if (entry->skb)
 			dev_kfree_skb_any(entry->skb);
 
 		entry->first_frag_time = jiffies;
@@ -145,7 +145,7 @@ rtllib_frag_cache_get(struct rtllib_device *ieee,
 		 */
 		entry = rtllib_frag_cache_find(ieee, seq, frag, tid, hdr->addr2,
 						  hdr->addr1);
-		if (entry != NULL) {
+		if (entry) {
 			entry->last_frag = frag;
 			skb = entry->skb;
 		}
@@ -184,7 +184,7 @@ static int rtllib_frag_cache_invalidate(struct rtllib_device *ieee,
 	entry = rtllib_frag_cache_find(ieee, seq, -1, tid, hdr->addr2,
 					  hdr->addr1);
 
-	if (entry == NULL) {
+	if (!entry) {
 		netdev_dbg(ieee->dev,
 			   "Couldn't invalidate fragment cache entry (seq=%u)\n",
 			   seq);
@@ -276,7 +276,7 @@ rtllib_rx_frame_decrypt(struct rtllib_device *ieee, struct sk_buff *skb,
 	struct ieee80211_hdr *hdr;
 	int res, hdrlen;
 
-	if (crypt == NULL || crypt->ops->decrypt_mpdu == NULL)
+	if (!crypt || !crypt->ops->decrypt_mpdu)
 		return 0;
 
 	if (ieee->hwsec_active) {
@@ -316,7 +316,7 @@ rtllib_rx_frame_decrypt_msdu(struct rtllib_device *ieee, struct sk_buff *skb,
 	struct ieee80211_hdr *hdr;
 	int res, hdrlen;
 
-	if (crypt == NULL || crypt->ops->decrypt_msdu == NULL)
+	if (!crypt || !crypt->ops->decrypt_msdu)
 		return 0;
 	if (ieee->hwsec_active) {
 		struct cb_desc *tcb_desc = (struct cb_desc *)
@@ -998,8 +998,7 @@ static int rtllib_rx_get_crypt(struct rtllib_device *ieee, struct sk_buff *skb,
 	/* allow NULL decrypt to indicate an station specific override
 	 * for default encryption
 	 */
-	if (*crypt && ((*crypt)->ops == NULL ||
-		      (*crypt)->ops->decrypt_mpdu == NULL))
+	if (*crypt && (!(*crypt)->ops || !(*crypt)->ops->decrypt_mpdu))
 		*crypt = NULL;
 
 	if (!*crypt && (fc & IEEE80211_FCTL_PROTECTED)) {
@@ -1171,7 +1170,7 @@ static void rtllib_rx_indicate_pkt_legacy(struct rtllib_device *ieee,
 	u16 ethertype;
 	int i = 0;
 
-	if (rxb == NULL) {
+	if (!rxb) {
 		netdev_info(dev, "%s: rxb is NULL!!\n", __func__);
 		return;
 	}
@@ -1369,7 +1368,7 @@ static int rtllib_rx_InfraAdhoc(struct rtllib_device *ieee, struct sk_buff *skb,
 	rtllib_rx_check_leave_lps(ieee, unicast, nr_subframes);
 
 	/* Indicate packets to upper layer or Rx Reorder */
-	if (!ieee->ht_info->cur_rx_reorder_enable || ts == NULL)
+	if (!ieee->ht_info->cur_rx_reorder_enable || !ts)
 		rtllib_rx_indicate_pkt_legacy(ieee, rx_stats, rxb, dst, src);
 	else
 		RxReorderIndicatePacket(ieee, rxb, ts, SeqNum);
@@ -2510,8 +2509,7 @@ static inline void rtllib_process_probe_response(
 		if (is_same_network(target, network,
 		   (target->ssid_len ? 1 : 0)))
 			break;
-		if ((oldest == NULL) ||
-		    (target->last_scanned < oldest->last_scanned))
+		if (!oldest || (target->last_scanned < oldest->last_scanned))
 			oldest = target;
 	}
 
diff --git a/drivers/staging/rtl8192e/rtllib_softmac.c b/drivers/staging/rtl8192e/rtllib_softmac.c
index ff98b41c94e0..42d652fe8601 100644
--- a/drivers/staging/rtl8192e/rtllib_softmac.c
+++ b/drivers/staging/rtl8192e/rtllib_softmac.c
@@ -918,7 +918,7 @@ rtllib_association_req(struct rtllib_network *beacon,
 	int len = 0;
 
 	crypt = ieee->crypt_info.crypt[ieee->crypt_info.tx_keyidx];
-	if (crypt != NULL)
+	if (crypt)
 		encrypt = crypt && crypt->ops &&
 			  ((strcmp(crypt->ops->name, "R-WEP") == 0 ||
 			  wpa_ie_len));
-- 
2.42.0