powerpc/ps3: replace open-coded sysfs_emit function

[PATCH][next] powerpc/ps3: replace open-coded sysfs_emit function

Posted by Paulo Miguel Almeida 1 month, 1 week ago

sysfs_emit() helper function should be used when formatting the value
to be returned to user space.

This patch replaces open-coded sysfs_emit() in sysfs .show() callbacks

Link: https://github.com/KSPP/linux/issues/105
Signed-off-by: Paulo Miguel Almeida <paulo.miguel.almeida.rodenas@gmail.com>
---
 arch/powerpc/platforms/ps3/system-bus.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/arch/powerpc/platforms/ps3/system-bus.c b/arch/powerpc/platforms/ps3/system-bus.c
index b9a7d9bae687..afbaabf182d0 100644
--- a/arch/powerpc/platforms/ps3/system-bus.c
+++ b/arch/powerpc/platforms/ps3/system-bus.c
@@ -453,10 +453,9 @@ static ssize_t modalias_show(struct device *_dev, struct device_attribute *a,
 	char *buf)
 {
 	struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
-	int len = snprintf(buf, PAGE_SIZE, "ps3:%d:%d\n", dev->match_id,
-			   dev->match_sub_id);
 
-	return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len;
+	return sysfs_emit(buf, "ps3:%d:%d\n", dev->match_id,
+			  dev->match_sub_id);
 }
 static DEVICE_ATTR_RO(modalias);
 
-- 
2.47.0

Re: [PATCH][next] powerpc/ps3: replace open-coded sysfs_emit function

Posted by Michael Ellerman 1 week, 1 day ago

On Sat, 19 Oct 2024 15:13:49 +1300, Paulo Miguel Almeida wrote:
> sysfs_emit() helper function should be used when formatting the value
> to be returned to user space.
> 
> This patch replaces open-coded sysfs_emit() in sysfs .show() callbacks
> 
> 

Applied to powerpc/next.

[1/1] powerpc/ps3: replace open-coded sysfs_emit function
      https://git.kernel.org/powerpc/c/2866949ec889cf383c481119c617b9cead733070

cheers

Re: [PATCH][next] powerpc/ps3: replace open-coded sysfs_emit function

Posted by Geoff Levand 1 month ago

Hi Paulo,

On 10/19/24 11:13, Paulo Miguel Almeida wrote:
> sysfs_emit() helper function should be used when formatting the value
> to be returned to user space.
> 
> This patch replaces open-coded sysfs_emit() in sysfs .show() callbacks
> 
> Link: https://github.com/KSPP/linux/issues/105
> Signed-off-by: Paulo Miguel Almeida <paulo.miguel.almeida.rodenas@gmail.com>
> ---
>  arch/powerpc/platforms/ps3/system-bus.c | 5 ++---
>  1 file changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/arch/powerpc/platforms/ps3/system-bus.c b/arch/powerpc/platforms/ps3/system-bus.c
> index b9a7d9bae687..afbaabf182d0 100644
> --- a/arch/powerpc/platforms/ps3/system-bus.c
> +++ b/arch/powerpc/platforms/ps3/system-bus.c
> @@ -453,10 +453,9 @@ static ssize_t modalias_show(struct device *_dev, struct device_attribute *a,
>  	char *buf)
>  {
>  	struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev);
> -	int len = snprintf(buf, PAGE_SIZE, "ps3:%d:%d\n", dev->match_id,
> -			   dev->match_sub_id);
>  
> -	return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len;
> +	return sysfs_emit(buf, "ps3:%d:%d\n", dev->match_id,
> +			  dev->match_sub_id);
>  }
>  static DEVICE_ATTR_RO(modalias);

I tested this on PS3 and it seems to work OK.
Thanks for your contribution.

Acked-by: Geoff Levand <geoff@infradead.org>

Re: [PATCH][next] powerpc/ps3: replace open-coded sysfs_emit function

Posted by Geert Uytterhoeven 1 month ago

On Sat, Oct 19, 2024 at 4:14 AM Paulo Miguel Almeida
<paulo.miguel.almeida.rodenas@gmail.com> wrote:
> sysfs_emit() helper function should be used when formatting the value
> to be returned to user space.
>
> This patch replaces open-coded sysfs_emit() in sysfs .show() callbacks
>
> Link: https://github.com/KSPP/linux/issues/105
> Signed-off-by: Paulo Miguel Almeida <paulo.miguel.almeida.rodenas@gmail.com>

Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds