2019-12-10 19:56:15

by Arnd Bergmann

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Subject: [PATCH] gpio: xgs-iproc: remove __exit annotation for iproc_gpio_remove

When built into the kernel, the driver causes a link problem:

`iproc_gpio_remove' referenced in section `.data' of drivers/gpio/gpio-xgs-iproc.o: defined in discarded section `.exit.text' of drivers/gpio/gpio-xgs-iproc.o

Remove the incorrect annotation.

Fixes: 6a41b6c5fc20 ("gpio: Add xgs-iproc driver")
Signed-off-by: Arnd Bergmann <[email protected]>
---
drivers/gpio/gpio-xgs-iproc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpio/gpio-xgs-iproc.c b/drivers/gpio/gpio-xgs-iproc.c
index 773e5c24309e..b21c2e436b61 100644
--- a/drivers/gpio/gpio-xgs-iproc.c
+++ b/drivers/gpio/gpio-xgs-iproc.c
@@ -280,7 +280,7 @@ static int iproc_gpio_probe(struct platform_device *pdev)
return 0;
}

-static int __exit iproc_gpio_remove(struct platform_device *pdev)
+static int iproc_gpio_remove(struct platform_device *pdev)
{
struct iproc_gpio_chip *chip;

--
2.20.0


2019-12-10 20:25:48

by Chris Packham

[permalink] [raw]
Subject: Re: [PATCH] gpio: xgs-iproc: remove __exit annotation for iproc_gpio_remove

On Tue, 2019-12-10 at 20:54 +0100, Arnd Bergmann wrote:
> When built into the kernel, the driver causes a link problem:
>
> `iproc_gpio_remove' referenced in section `.data' of drivers/gpio/gpio-xgs-iproc.o: defined in discarded section `.exit.text' of drivers/gpio/gpio-xgs-iproc.o
>
> Remove the incorrect annotation.
>
> Fixes: 6a41b6c5fc20 ("gpio: Add xgs-iproc driver")
> Signed-off-by: Arnd Bergmann <[email protected]>

Reviewed-by: Chris Packham <[email protected]>

What's the current best practice w.r.t.__init and __exit? I seem to
have messed this up on multiple fronts.

> ---
> drivers/gpio/gpio-xgs-iproc.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpio/gpio-xgs-iproc.c b/drivers/gpio/gpio-xgs-iproc.c
> index 773e5c24309e..b21c2e436b61 100644
> --- a/drivers/gpio/gpio-xgs-iproc.c
> +++ b/drivers/gpio/gpio-xgs-iproc.c
> @@ -280,7 +280,7 @@ static int iproc_gpio_probe(struct platform_device *pdev)
> return 0;
> }
>
> -static int __exit iproc_gpio_remove(struct platform_device *pdev)
> +static int iproc_gpio_remove(struct platform_device *pdev)
> {
> struct iproc_gpio_chip *chip;
>

2019-12-10 20:29:54

by Arnd Bergmann

[permalink] [raw]
Subject: Re: [PATCH] gpio: xgs-iproc: remove __exit annotation for iproc_gpio_remove

On Tue, Dec 10, 2019 at 9:24 PM Chris Packham
<[email protected]> wrote:
>
> On Tue, 2019-12-10 at 20:54 +0100, Arnd Bergmann wrote:
> > When built into the kernel, the driver causes a link problem:
> >
> > `iproc_gpio_remove' referenced in section `.data' of drivers/gpio/gpio-xgs-iproc.o: defined in discarded section `.exit.text' of drivers/gpio/gpio-xgs-iproc.o
> >
> > Remove the incorrect annotation.
> >
> > Fixes: 6a41b6c5fc20 ("gpio: Add xgs-iproc driver")
> > Signed-off-by: Arnd Bergmann <[email protected]>
>
> Reviewed-by: Chris Packham <[email protected]>
>
> What's the current best practice w.r.t.__init and __exit? I seem to
> have messed this up on multiple fronts.

These are used for anything that is a module_init() function or a
module_exit() function, or called from one, but generally not
for any callbacks.

In particular the probe() and remove() callbacks of a device driver
can get called at runtime when the device is hotplugged through
sysfs.

Arnd

2019-12-11 09:15:25

by Bartosz Golaszewski

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Subject: Re: [PATCH] gpio: xgs-iproc: remove __exit annotation for iproc_gpio_remove

wt., 10 gru 2019 o 21:24 Chris Packham
<[email protected]> napisaƂ(a):
>
> On Tue, 2019-12-10 at 20:54 +0100, Arnd Bergmann wrote:
> > When built into the kernel, the driver causes a link problem:
> >
> > `iproc_gpio_remove' referenced in section `.data' of drivers/gpio/gpio-xgs-iproc.o: defined in discarded section `.exit.text' of drivers/gpio/gpio-xgs-iproc.o
> >
> > Remove the incorrect annotation.
> >
> > Fixes: 6a41b6c5fc20 ("gpio: Add xgs-iproc driver")
> > Signed-off-by: Arnd Bergmann <[email protected]>
>
> Reviewed-by: Chris Packham <[email protected]>
>
> What's the current best practice w.r.t.__init and __exit? I seem to
> have messed this up on multiple fronts.
>

Applied for fixes.

Bartosz