linux-kernel - [PATCH] staging: rtl8192u: Remove unnecessary function and its call

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Date:   Sun, 5 Mar 2017 18:54:27 +0530
From:   simran singhal <singhalsimran0@...il.com>
To:     gregkh@...uxfoundation.org
Cc:     devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
        outreachy-kernel@...glegroups.com
Subject: [PATCH] staging: rtl8192u: Remove unnecessary function and its call

The function ieee80211_tkip_null on being called, simply returns
back. The function hasn't been mentioned in the TODO and doesn't have
FIXME code around. Hence, ieee80211_tkip_null and its calls have
been removed.

This was done using Coccinelle.

@@
identifier f;
@@

void f(...) {

-return;

}

Signed-off-by: simran singhal <singhalsimran0@...il.com>
---
 drivers/staging/rtl8192u/ieee80211/ieee80211.h            | 3 ---
 drivers/staging/rtl8192u/ieee80211/ieee80211_crypt_tkip.c | 5 -----
 drivers/staging/rtl8192u/ieee80211/ieee80211_module.c     | 1 -
 3 files changed, 9 deletions(-)

diff --git a/drivers/staging/rtl8192u/ieee80211/ieee80211.h b/drivers/staging/rtl8192u/ieee80211/ieee80211.h
index 176083e..1babc37 100644
--- a/drivers/staging/rtl8192u/ieee80211/ieee80211.h
+++ b/drivers/staging/rtl8192u/ieee80211/ieee80211.h
@@ -236,8 +236,6 @@ struct cb_desc {
 
 #define ieee80211_ccmp_null		ieee80211_ccmp_null_rsl
 
-#define ieee80211_tkip_null		ieee80211_tkip_null_rsl
-
 #define free_ieee80211			free_ieee80211_rsl
 #define alloc_ieee80211			alloc_ieee80211_rsl
 
@@ -2266,7 +2264,6 @@ void ieee80211_ps_tx_ack(struct ieee80211_device *ieee, short success);
 void softmac_mgmt_xmit(struct sk_buff *skb, struct ieee80211_device *ieee);
 
 /* ieee80211_crypt_ccmp&tkip&wep.c */
-void ieee80211_tkip_null(void);
 
 int ieee80211_crypto_init(void);
 void ieee80211_crypto_deinit(void);
diff --git a/drivers/staging/rtl8192u/ieee80211/ieee80211_crypt_tkip.c b/drivers/staging/rtl8192u/ieee80211/ieee80211_crypt_tkip.c
index df94021..54ca69e 100644
--- a/drivers/staging/rtl8192u/ieee80211/ieee80211_crypt_tkip.c
+++ b/drivers/staging/rtl8192u/ieee80211/ieee80211_crypt_tkip.c
@@ -785,8 +785,3 @@ void __exit ieee80211_crypto_tkip_exit(void)
 	ieee80211_unregister_crypto_ops(&ieee80211_crypt_tkip);
 }
 
-void ieee80211_tkip_null(void)
-{
-//    printk("============>%s()\n", __func__);
-	return;
-}
diff --git a/drivers/staging/rtl8192u/ieee80211/ieee80211_module.c b/drivers/staging/rtl8192u/ieee80211/ieee80211_module.c
index a791175..bb52eee 100644
--- a/drivers/staging/rtl8192u/ieee80211/ieee80211_module.c
+++ b/drivers/staging/rtl8192u/ieee80211/ieee80211_module.c
@@ -176,7 +176,6 @@ struct net_device *alloc_ieee80211(int sizeof_priv)
 	}
 
 /* These function were added to load crypte module autoly */
-	ieee80211_tkip_null();
 
 	return dev;
 
-- 
2.7.4