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

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

[Simran Singhal]

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@gmail.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

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Re: [Outreachy kernel] [PATCH] staging: rtl8723bs: rtw_cmd: Compress lines for immediate return

[Stefano Brivio]

On Thu, 26 Mar 2020 02:52:53 +0530
Simran Singhal <singhalsimran0@gmail.com> wrote:

> 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.

This should be consistent. What does "it" refer to, now? If you start
with an imperative mode, switching to indicative makes it hard to
follow.

By the way, Coccinelle is not exactly a script. Saying something is
detected by Coccinelle is enough, you don't need to qualify that
further.

-- 
Stefano

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