linux-kernel - [PATCH] staging: rtl8723bs: rtw_cmd: Compress lines for immediate return

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Date:   Thu, 26 Mar 2020 02:52:53 +0530
From:   Simran Singhal <singhalsimran0@...il.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
        outreachy-kernel@...glegroups.com
Subject: [PATCH] staging: rtl8723bs: rtw_cmd: Compress lines for immediate
 return

Compress two lines into a single line if immediate return statement is found.
It also removes variable cmd_obj as it is no longer needed.

It is done using script Coccinelle.
And coccinelle uses following semantic patch for this compression function:

@@
expression ret;
identifier f;
@@

-ret =
+return
     f(...);
-return ret;

Signed-off-by: Simran Singhal <singhalsimran0@...il.com>
---
 drivers/staging/rtl8723bs/core/rtw_cmd.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/drivers/staging/rtl8723bs/core/rtw_cmd.c b/drivers/staging/rtl8723bs/core/rtw_cmd.c
index 744b40dd4cf0..42b0ea8abd9c 100644
--- a/drivers/staging/rtl8723bs/core/rtw_cmd.c
+++ b/drivers/staging/rtl8723bs/core/rtw_cmd.c
@@ -362,11 +362,7 @@ int rtw_enqueue_cmd(struct cmd_priv *pcmdpriv, struct cmd_obj *cmd_obj)
 
 struct	cmd_obj	*rtw_dequeue_cmd(struct cmd_priv *pcmdpriv)
 {
-	struct cmd_obj *cmd_obj;
-
-	cmd_obj = _rtw_dequeue_cmd(&pcmdpriv->cmd_queue);
-
-	return cmd_obj;
+	return _rtw_dequeue_cmd(&pcmdpriv->cmd_queue);
 }
 
 void rtw_free_cmd_obj(struct cmd_obj *pcmd)
-- 
2.17.1