[PATCH 25/28] drivers/hwmon/smsc47b397: Drop return value fromplatform_driver remove functions

From: Julia Lawall
Date: Wed Dec 10 2008 - 11:42:51 EST


From: Julia Lawall <julia@xxxxxxx>

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. For the files in this patch, the
return values are always 0.

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@xxxxxxx>

---
drivers/hwmon/smsc47b397.c | 6 ++----
drivers/hwmon/smsc47m1.c | 8 +++-----
2 files changed, 5 insertions(+), 9 deletions(-)

diff --git a/drivers/hwmon/smsc47b397.c b/drivers/hwmon/smsc47b397.c
index eb03544..fd4d596 100644
--- a/drivers/hwmon/smsc47b397.c
+++ b/drivers/hwmon/smsc47b397.c
@@ -221,7 +221,7 @@ static const struct attribute_group smsc47b397_group = {
.attrs = smsc47b397_attributes,
};

-static int __devexit smsc47b397_remove(struct platform_device *pdev)
+static void __devexit smsc47b397_remove(struct platform_device *pdev)
{
struct smsc47b397_data *data = platform_get_drvdata(pdev);
struct resource *res;
@@ -231,8 +231,6 @@ static int __devexit smsc47b397_remove(struct platform_device *pdev)
res = platform_get_resource(pdev, IORESOURCE_IO, 0);
release_region(res->start, SMSC_EXTENT);
kfree(data);
-
- return 0;
}

static int smsc47b397_probe(struct platform_device *pdev);
@@ -243,7 +241,7 @@ static struct platform_driver smsc47b397_driver = {
.name = DRVNAME,
},
.probe = smsc47b397_probe,
- .remove = __devexit_p(smsc47b397_remove),
+ .remove_new = __devexit_p(smsc47b397_remove),
};

static int __devinit smsc47b397_probe(struct platform_device *pdev)
diff --git a/drivers/hwmon/smsc47m1.c b/drivers/hwmon/smsc47m1.c
index d1b4985..fbd9556 100644
--- a/drivers/hwmon/smsc47m1.c
+++ b/drivers/hwmon/smsc47m1.c
@@ -138,7 +138,7 @@ struct smsc47m1_sio_data {


static int smsc47m1_probe(struct platform_device *pdev);
-static int __devexit smsc47m1_remove(struct platform_device *pdev);
+static void __devexit smsc47m1_remove(struct platform_device *pdev);
static struct smsc47m1_data *smsc47m1_update_device(struct device *dev,
int init);

@@ -159,7 +159,7 @@ static struct platform_driver smsc47m1_driver = {
.name = DRVNAME,
},
.probe = smsc47m1_probe,
- .remove = __devexit_p(smsc47m1_remove),
+ .remove_new = __devexit_p(smsc47m1_remove),
};

static ssize_t get_fan(struct device *dev, struct device_attribute
@@ -629,7 +629,7 @@ error_release:
return err;
}

-static int __devexit smsc47m1_remove(struct platform_device *pdev)
+static void __devexit smsc47m1_remove(struct platform_device *pdev)
{
struct smsc47m1_data *data = platform_get_drvdata(pdev);
struct resource *res;
@@ -641,8 +641,6 @@ static int __devexit smsc47m1_remove(struct platform_device *pdev)
release_region(res->start, SMSC_EXTENT);
platform_set_drvdata(pdev, NULL);
kfree(data);
-
- return 0;
}

static struct smsc47m1_data *smsc47m1_update_device(struct device *dev,
--
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