diff mbox

[4/13,v2] wimax/i2400m: make return of 0 explicit

Message ID alpine.DEB.2.10.1405200844010.2723@hadrien
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Julia Lawall May 20, 2014, 12:44 a.m. UTC 
From: Julia Lawall <Julia.Lawall@lip6.fr>

Delete unnecessary local variable whose value is always 0 and that hides
the fact that the result is always 0.

A simplified version of the semantic patch that fixes this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@r exists@
local idexpression ret;
expression e;
position p;
@@

-ret = 0;
... when != ret = e
return
- ret
+ 0
  ;
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>

---
Alternatively, is an error code wanted under the if?

v2: remove the use of 0 as an argument in the call to d_fnend

 drivers/net/wimax/i2400m/driver.c |    7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

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Comments

David Miller May 21, 2014, 9:19 p.m. UTC | #1 
From: Julia Lawall <julia.lawall@lip6.fr>
Date: Tue, 20 May 2014 08:44:49 +0800 (SGT)

> From: Julia Lawall <Julia.Lawall@lip6.fr>
> 
> Delete unnecessary local variable whose value is always 0 and that hides
> the fact that the result is always 0.
> 
> A simplified version of the semantic patch that fixes this problem is as
> follows: (http://coccinelle.lip6.fr/)
 ...
> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
> 
> ---
> Alternatively, is an error code wanted under the if?
> 
> v2: remove the use of 0 as an argument in the call to d_fnend

Applied to net-next, thanks.
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diff mbox

Patch

diff --git a/drivers/net/wimax/i2400m/driver.c b/drivers/net/wimax/i2400m/driver.c
index 9c34d2f..9c78090 100644
--- a/drivers/net/wimax/i2400m/driver.c
+++ b/drivers/net/wimax/i2400m/driver.c
@@ -500,26 +500,23 @@  int i2400m_pm_notifier(struct notifier_block *notifier,
  */
 int i2400m_pre_reset(struct i2400m *i2400m)
 {
-	int result;
 	struct device *dev = i2400m_dev(i2400m);

 	d_fnstart(3, dev, "(i2400m %p)\n", i2400m);
 	d_printf(1, dev, "pre-reset shut down\n");

-	result = 0;
 	mutex_lock(&i2400m->init_mutex);
 	if (i2400m->updown) {
 		netif_tx_disable(i2400m->wimax_dev.net_dev);
 		__i2400m_dev_stop(i2400m);
-		result = 0;
 		/* down't set updown to zero -- this way
 		 * post_reset can restore properly */
 	}
 	mutex_unlock(&i2400m->init_mutex);
 	if (i2400m->bus_release)
 		i2400m->bus_release(i2400m);
-	d_fnend(3, dev, "(i2400m %p) = %d\n", i2400m, result);
-	return result;
+	d_fnend(3, dev, "(i2400m %p) = 0\n", i2400m);
+	return 0;
 }
 EXPORT_SYMBOL_GPL(i2400m_pre_reset);