linux-kernel - [PATCH] staging: r8188eu: remove null pointer checks before kfree

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Message-Id: <20210818085809.31451-1-straube.linux@gmail.com>
Date:   Wed, 18 Aug 2021 10:58:09 +0200
From:   Michael Straube <straube.linux@...il.com>
To:     gregkh@...uxfoundation.org
Cc:     Larry.Finger@...inger.net, phil@...lpotter.co.uk, martin@...ser.cx,
        fmdefrancesco@...il.com, linux-staging@...ts.linux.dev,
        linux-kernel@...r.kernel.org,
        Michael Straube <straube.linux@...il.com>
Subject: [PATCH] staging: r8188eu: remove null pointer checks before kfree

kfree(NULL) is safe, so remove unnecessary null pointer checks before
calls to kfree. Reported by checkpatch.

Signed-off-by: Michael Straube <straube.linux@...il.com>
---
 drivers/staging/r8188eu/core/rtw_ap.c  |  3 +--
 drivers/staging/r8188eu/core/rtw_cmd.c | 13 +++----------
 2 files changed, 4 insertions(+), 12 deletions(-)

diff --git a/drivers/staging/r8188eu/core/rtw_ap.c b/drivers/staging/r8188eu/core/rtw_ap.c
index 8ef0586b753f..1127e9a52458 100644
--- a/drivers/staging/r8188eu/core/rtw_ap.c
+++ b/drivers/staging/r8188eu/core/rtw_ap.c
@@ -1314,8 +1314,7 @@ static void update_bcn_wps_ie(struct adapter *padapter)
 		pnetwork->IELength = wps_offset + (wps_ielen + 2) + remainder_ielen;
 	}
 
-	if (pbackup_remainder_ie)
-		kfree(pbackup_remainder_ie);
+	kfree(pbackup_remainder_ie);
 }
 
 static void update_bcn_p2p_ie(struct adapter *padapter)
diff --git a/drivers/staging/r8188eu/core/rtw_cmd.c b/drivers/staging/r8188eu/core/rtw_cmd.c
index a68776f5e67b..955499eb608a 100644
--- a/drivers/staging/r8188eu/core/rtw_cmd.c
+++ b/drivers/staging/r8188eu/core/rtw_cmd.c
@@ -89,13 +89,9 @@ void rtw_free_evt_priv(struct	evt_priv *pevtpriv)
 
 void _rtw_free_cmd_priv(struct cmd_priv *pcmdpriv)
 {
-
 	if (pcmdpriv) {
-		if (pcmdpriv->cmd_allocated_buf)
-			kfree(pcmdpriv->cmd_allocated_buf);
-
-		if (pcmdpriv->rsp_allocated_buf)
-			kfree(pcmdpriv->rsp_allocated_buf);
+		kfree(pcmdpriv->cmd_allocated_buf);
+		kfree(pcmdpriv->rsp_allocated_buf);
 	}
 }
 
@@ -818,11 +814,8 @@ u8 rtw_joinbss_cmd(struct adapter  *padapter, struct wlan_network *pnetwork)
 
 	psecnetwork = (struct wlan_bssid_ex *)&psecuritypriv->sec_bss;
 	if (!psecnetwork) {
-		if (pcmd)
-			kfree(pcmd);
-
+		kfree(pcmd);
 		res = _FAIL;
-
 		goto exit;
 	}
 
-- 
2.32.0