Hello,
this series converts all platform drivers below arch/x86/ to not use
struct platform_device::remove() any more. See commit 5c5a7680e67b
("platform: Provide a remove callback that returns no value") for an
extended explanation and the eventual goal.
All conversations are trivial, because the driver's .remove() callbacks
returned zero unconditionally.
I don't know how maintenance of these drivers is organized, but
there are no interdependencies between these patches, so they can be
applied independently if needed. This is merge window material.
Best regards
Uwe
Uwe Kleine-König (3):
x86: platform: iris: Convert to platform remove callback returning
void
x86: platform: olpc-x01-pm: Convert to platform remove callback
returning void
x86: platform: olpc-xo1-sci: Convert to platform remove callback
returning void
arch/x86/platform/iris/iris.c | 5 ++---
arch/x86/platform/olpc/olpc-xo1-pm.c | 7 +++----
arch/x86/platform/olpc/olpc-xo1-sci.c | 5 ++---
3 files changed, 7 insertions(+), 10 deletions(-)
base-commit: 6ebf211bb11dfc004a2ff73a9de5386fa309c430
--
2.43.0
The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.
To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
remove_new(), which already returns void. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().
Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.
Signed-off-by: Uwe Kleine-König <[email protected]>
---
arch/x86/platform/olpc/olpc-xo1-sci.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/arch/x86/platform/olpc/olpc-xo1-sci.c b/arch/x86/platform/olpc/olpc-xo1-sci.c
index 89f25af4b3c3..46d42ff6e18a 100644
--- a/arch/x86/platform/olpc/olpc-xo1-sci.c
+++ b/arch/x86/platform/olpc/olpc-xo1-sci.c
@@ -598,7 +598,7 @@ static int xo1_sci_probe(struct platform_device *pdev)
return r;
}
-static int xo1_sci_remove(struct platform_device *pdev)
+static void xo1_sci_remove(struct platform_device *pdev)
{
free_irq(sci_irq, pdev);
cancel_work_sync(&sci_work);
@@ -608,7 +608,6 @@ static int xo1_sci_remove(struct platform_device *pdev)
free_ebook_switch();
free_power_button();
acpi_base = 0;
- return 0;
}
static struct platform_driver xo1_sci_driver = {
@@ -617,7 +616,7 @@ static struct platform_driver xo1_sci_driver = {
.dev_groups = lid_groups,
},
.probe = xo1_sci_probe,
- .remove = xo1_sci_remove,
+ .remove_new = xo1_sci_remove,
.suspend = xo1_sci_suspend,
.resume = xo1_sci_resume,
};
--
2.43.0
The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.
To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
remove_new(), which already returns void. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().
Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.
Signed-off-by: Uwe Kleine-König <[email protected]>
---
arch/x86/platform/iris/iris.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/arch/x86/platform/iris/iris.c b/arch/x86/platform/iris/iris.c
index b42bfdab01a9..c5f3bbdbdcfe 100644
--- a/arch/x86/platform/iris/iris.c
+++ b/arch/x86/platform/iris/iris.c
@@ -62,11 +62,10 @@ static int iris_probe(struct platform_device *pdev)
return 0;
}
-static int iris_remove(struct platform_device *pdev)
+static void iris_remove(struct platform_device *pdev)
{
pm_power_off = old_pm_power_off;
printk(KERN_INFO "Iris power_off handler uninstalled.\n");
- return 0;
}
static struct platform_driver iris_driver = {
@@ -74,7 +73,7 @@ static struct platform_driver iris_driver = {
.name = "iris",
},
.probe = iris_probe,
- .remove = iris_remove,
+ .remove_new = iris_remove,
};
static struct resource iris_resources[] = {
--
2.43.0
The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.
To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
remove_new(), which already returns void. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().
Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.
Signed-off-by: Uwe Kleine-König <[email protected]>
---
arch/x86/platform/olpc/olpc-xo1-pm.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/arch/x86/platform/olpc/olpc-xo1-pm.c b/arch/x86/platform/olpc/olpc-xo1-pm.c
index f067ac780ba7..6a9c42de74e7 100644
--- a/arch/x86/platform/olpc/olpc-xo1-pm.c
+++ b/arch/x86/platform/olpc/olpc-xo1-pm.c
@@ -144,7 +144,7 @@ static int xo1_pm_probe(struct platform_device *pdev)
return 0;
}
-static int xo1_pm_remove(struct platform_device *pdev)
+static void xo1_pm_remove(struct platform_device *pdev)
{
if (strcmp(pdev->name, "cs5535-pms") == 0)
pms_base = 0;
@@ -152,7 +152,6 @@ static int xo1_pm_remove(struct platform_device *pdev)
acpi_base = 0;
pm_power_off = NULL;
- return 0;
}
static struct platform_driver cs5535_pms_driver = {
@@ -160,7 +159,7 @@ static struct platform_driver cs5535_pms_driver = {
.name = "cs5535-pms",
},
.probe = xo1_pm_probe,
- .remove = xo1_pm_remove,
+ .remove_new = xo1_pm_remove,
};
static struct platform_driver cs5535_acpi_driver = {
@@ -168,7 +167,7 @@ static struct platform_driver cs5535_acpi_driver = {
.name = "olpc-xo1-pm-acpi",
},
.probe = xo1_pm_probe,
- .remove = xo1_pm_remove,
+ .remove_new = xo1_pm_remove,
};
static int __init xo1_pm_init(void)
--
2.43.0