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Date: Wed, 10 Dec 2008 17:40:14 +0100 (CET)
From: Julia Lawall <julia@...u.dk>
To: dmitri.vorobiev@...ial.fi, rmk@....linux.org.uk,
linux-arm-kernel@...ts.arm.linux.org.uk,
linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [PATCH 20/28] arch/arm: Drop return value from platform_driver remove
functions
From: Julia Lawall <julia@...u.dk>
The return value of the remove function of a driver structure, and thus of
a platform_driver structure, is ultimately ignored, and is thus
unnecessary. This patch removes the return value for the remove function
stored in a platform_driver structure. In arch/arm/common/scoop.c, in the
original code, there could have been a return of a value other than 0. The
original return value is 0 in all other cases.
A simplified version of the semantic patch that makes this change is as
follows: (http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@r@
struct platform_driver I;
identifier a,f;
position p;
@@
I.remove = \(f@p\|a(f@p)\);
@void_called@
identifier r.f;
position p;
@@
f@p(...);
@called@
identifier r.f;
position p1 != void_called.p;
@@
f@p1(...)
@localfn@
identifier r.f;
@@
static int f(...) { ... }
@depends on !called && localfn@
struct platform_driver I;
identifier a,f;
position r.p;
@@
I.
- remove
+ remove_new
= \(f@p\|a(f@p)\);
@depends on !called && localfn@
identifier r.f,i;
constant C;
expression E;
@@
- int
+ void
f(...) {
<...
(
- return \(C\|i\);
+ return;
|
- return E;
+ E;
+ return;
)
...>
}
// </smpl>
Signed-off-by: Julia Lawall <julia@...u.dk>
---
arch/arm/common/locomo.c | 6 ++----
arch/arm/common/sa1111.c | 6 ++----
arch/arm/common/scoop.c | 10 ++++------
arch/arm/common/sharpsl_pm.c | 6 ++----
4 files changed, 10 insertions(+), 18 deletions(-)
diff --git a/arch/arm/common/locomo.c b/arch/arm/common/locomo.c
index 7c6b4b9..ae57b07 100644
--- a/arch/arm/common/locomo.c
+++ b/arch/arm/common/locomo.c
@@ -799,7 +799,7 @@ static int locomo_probe(struct platform_device *dev)
return __locomo_probe(&dev->dev, mem, irq);
}
-static int locomo_remove(struct platform_device *dev)
+static void locomo_remove(struct platform_device *dev)
{
struct locomo *lchip = platform_get_drvdata(dev);
@@ -807,8 +807,6 @@ static int locomo_remove(struct platform_device *dev)
__locomo_remove(lchip);
platform_set_drvdata(dev, NULL);
}
-
- return 0;
}
/*
@@ -819,7 +817,7 @@ static int locomo_remove(struct platform_device *dev)
*/
static struct platform_driver locomo_device_driver = {
.probe = locomo_probe,
- .remove = locomo_remove,
+ .remove_new = locomo_remove,
#ifdef CONFIG_PM
.suspend = locomo_suspend,
.resume = locomo_resume,
diff --git a/arch/arm/common/sa1111.c b/arch/arm/common/sa1111.c
index 47ccec9..9620972 100644
--- a/arch/arm/common/sa1111.c
+++ b/arch/arm/common/sa1111.c
@@ -954,7 +954,7 @@ static int __devinit sa1111_probe(struct platform_device *pdev)
return __sa1111_probe(&pdev->dev, mem, irq);
}
-static int sa1111_remove(struct platform_device *pdev)
+static void sa1111_remove(struct platform_device *pdev)
{
struct sa1111 *sachip = platform_get_drvdata(pdev);
@@ -967,8 +967,6 @@ static int sa1111_remove(struct platform_device *pdev)
sachip->saved_state = NULL;
#endif
}
-
- return 0;
}
/*
@@ -982,7 +980,7 @@ static int sa1111_remove(struct platform_device *pdev)
*/
static struct platform_driver sa1111_device_driver = {
.probe = sa1111_probe,
- .remove = sa1111_remove,
+ .remove_new = sa1111_remove,
.suspend = sa1111_suspend,
.resume = sa1111_resume,
.driver = {
diff --git a/arch/arm/common/scoop.c b/arch/arm/common/scoop.c
index 697c649..d84f0a9 100644
--- a/arch/arm/common/scoop.c
+++ b/arch/arm/common/scoop.c
@@ -273,32 +273,30 @@ err_ioremap:
return ret;
}
-static int __devexit scoop_remove(struct platform_device *pdev)
+static void __devexit scoop_remove(struct platform_device *pdev)
{
struct scoop_dev *sdev = platform_get_drvdata(pdev);
int ret;
if (!sdev)
- return -EINVAL;
+ return;
if (sdev->gpio.base != -1) {
ret = gpiochip_remove(&sdev->gpio);
if (ret) {
dev_err(&pdev->dev, "Can't remove gpio chip: %d\n", ret);
- return ret;
+ return;
}
}
platform_set_drvdata(pdev, NULL);
iounmap(sdev->base);
kfree(sdev);
-
- return 0;
}
static struct platform_driver scoop_driver = {
.probe = scoop_probe,
- .remove = __devexit_p(scoop_remove),
+ .remove_new = __devexit_p(scoop_remove),
.suspend = scoop_suspend,
.resume = scoop_resume,
.driver = {
diff --git a/arch/arm/common/sharpsl_pm.c b/arch/arm/common/sharpsl_pm.c
index 780bbf7..61393f3 100644
--- a/arch/arm/common/sharpsl_pm.c
+++ b/arch/arm/common/sharpsl_pm.c
@@ -818,7 +818,7 @@ static int __init sharpsl_pm_probe(struct platform_device *pdev)
return 0;
}
-static int sharpsl_pm_remove(struct platform_device *pdev)
+static void sharpsl_pm_remove(struct platform_device *pdev)
{
suspend_set_ops(NULL);
@@ -831,13 +831,11 @@ static int sharpsl_pm_remove(struct platform_device *pdev)
del_timer_sync(&sharpsl_pm.chrg_full_timer);
del_timer_sync(&sharpsl_pm.ac_timer);
-
- return 0;
}
static struct platform_driver sharpsl_pm_driver = {
.probe = sharpsl_pm_probe,
- .remove = sharpsl_pm_remove,
+ .remove_new = sharpsl_pm_remove,
.suspend = sharpsl_pm_suspend,
.resume = sharpsl_pm_resume,
.driver = {
--
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