* [PATCH] panel: rocktech: no need to check return value of debugfs_create functions
@ 2019-06-13 11:57 Greg Kroah-Hartman
2019-06-13 12:16 ` Guido Günther
0 siblings, 1 reply; 4+ messages in thread
From: Greg Kroah-Hartman @ 2019-06-13 11:57 UTC (permalink / raw)
To: Guido Günther, Thierry Reding, David Airlie, Daniel Vetter; +Cc: dri-devel
When calling debugfs functions, there is no need to ever check the
return value. The function can work or not, but the code logic should
never do something different based on this.
Cc: "Guido Günther" <agx@sigxcpu.org>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c | 14 +++-----------
1 file changed, 3 insertions(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c b/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c
index d88ea8da2ec2..6dcb692c4701 100644
--- a/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c
+++ b/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c
@@ -257,20 +257,12 @@ static int allpixelson_set(void *data, u64 val)
DEFINE_SIMPLE_ATTRIBUTE(allpixelson_fops, NULL,
allpixelson_set, "%llu\n");
-static int jh057n_debugfs_init(struct jh057n *ctx)
+static void jh057n_debugfs_init(struct jh057n *ctx)
{
- struct dentry *f;
-
ctx->debugfs = debugfs_create_dir(DRV_NAME, NULL);
- if (!ctx->debugfs)
- return -ENOMEM;
- f = debugfs_create_file("allpixelson", 0600,
- ctx->debugfs, ctx, &allpixelson_fops);
- if (!f)
- return -ENOMEM;
-
- return 0;
+ debugfs_create_file("allpixelson", 0600, ctx->debugfs, ctx,
+ &allpixelson_fops);
}
static void jh057n_debugfs_remove(struct jh057n *ctx)
--
2.22.0
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^ permalink raw reply related [flat|nested] 4+ messages in thread* Re: [PATCH] panel: rocktech: no need to check return value of debugfs_create functions
2019-06-13 11:57 [PATCH] panel: rocktech: no need to check return value of debugfs_create functions Greg Kroah-Hartman
@ 2019-06-13 12:16 ` Guido Günther
2019-06-13 13:09 ` Daniel Vetter
0 siblings, 1 reply; 4+ messages in thread
From: Guido Günther @ 2019-06-13 12:16 UTC (permalink / raw)
To: Greg Kroah-Hartman; +Cc: David Airlie, Thierry Reding, dri-devel
Hi,
On Thu, Jun 13, 2019 at 01:57:17PM +0200, Greg Kroah-Hartman wrote:
> When calling debugfs functions, there is no need to ever check the
> return value. The function can work or not, but the code logic should
> never do something different based on this.
>
> Cc: "Guido Günther" <agx@sigxcpu.org>
> Cc: Thierry Reding <thierry.reding@gmail.com>
> Cc: David Airlie <airlied@linux.ie>
> Cc: Daniel Vetter <daniel@ffwll.ch>
> Cc: dri-devel@lists.freedesktop.org
> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> ---
> drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c | 14 +++-----------
> 1 file changed, 3 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c b/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c
> index d88ea8da2ec2..6dcb692c4701 100644
> --- a/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c
> +++ b/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c
> @@ -257,20 +257,12 @@ static int allpixelson_set(void *data, u64 val)
> DEFINE_SIMPLE_ATTRIBUTE(allpixelson_fops, NULL,
> allpixelson_set, "%llu\n");
>
> -static int jh057n_debugfs_init(struct jh057n *ctx)
> +static void jh057n_debugfs_init(struct jh057n *ctx)
> {
> - struct dentry *f;
> -
> ctx->debugfs = debugfs_create_dir(DRV_NAME, NULL);
> - if (!ctx->debugfs)
> - return -ENOMEM;
>
> - f = debugfs_create_file("allpixelson", 0600,
> - ctx->debugfs, ctx, &allpixelson_fops);
> - if (!f)
> - return -ENOMEM;
> -
> - return 0;
> + debugfs_create_file("allpixelson", 0600, ctx->debugfs, ctx,
> + &allpixelson_fops);
> }
>
> static void jh057n_debugfs_remove(struct jh057n *ctx)
Reviewed-by: Guido Günther <agx@sigxcpu.org>
Thanks,
-- Guido
> --
> 2.22.0
>
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^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [PATCH] panel: rocktech: no need to check return value of debugfs_create functions
2019-06-13 12:16 ` Guido Günther
@ 2019-06-13 13:09 ` Daniel Vetter
2019-06-13 13:23 ` Greg Kroah-Hartman
0 siblings, 1 reply; 4+ messages in thread
From: Daniel Vetter @ 2019-06-13 13:09 UTC (permalink / raw)
To: Guido Günther
Cc: David Airlie, Greg Kroah-Hartman, Thierry Reding, dri-devel
On Thu, Jun 13, 2019 at 02:16:16PM +0200, Guido Günther wrote:
> Hi,
> On Thu, Jun 13, 2019 at 01:57:17PM +0200, Greg Kroah-Hartman wrote:
> > When calling debugfs functions, there is no need to ever check the
> > return value. The function can work or not, but the code logic should
> > never do something different based on this.
> >
> > Cc: "Guido Günther" <agx@sigxcpu.org>
> > Cc: Thierry Reding <thierry.reding@gmail.com>
> > Cc: David Airlie <airlied@linux.ie>
> > Cc: Daniel Vetter <daniel@ffwll.ch>
> > Cc: dri-devel@lists.freedesktop.org
> > Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> > ---
> > drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c | 14 +++-----------
> > 1 file changed, 3 insertions(+), 11 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c b/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c
> > index d88ea8da2ec2..6dcb692c4701 100644
> > --- a/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c
> > +++ b/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c
> > @@ -257,20 +257,12 @@ static int allpixelson_set(void *data, u64 val)
> > DEFINE_SIMPLE_ATTRIBUTE(allpixelson_fops, NULL,
> > allpixelson_set, "%llu\n");
> >
> > -static int jh057n_debugfs_init(struct jh057n *ctx)
> > +static void jh057n_debugfs_init(struct jh057n *ctx)
> > {
> > - struct dentry *f;
> > -
> > ctx->debugfs = debugfs_create_dir(DRV_NAME, NULL);
> > - if (!ctx->debugfs)
> > - return -ENOMEM;
> >
> > - f = debugfs_create_file("allpixelson", 0600,
> > - ctx->debugfs, ctx, &allpixelson_fops);
> > - if (!f)
> > - return -ENOMEM;
> > -
> > - return 0;
> > + debugfs_create_file("allpixelson", 0600, ctx->debugfs, ctx,
> > + &allpixelson_fops);
> > }
> >
> > static void jh057n_debugfs_remove(struct jh057n *ctx)
>
> Reviewed-by: Guido Günther <agx@sigxcpu.org>
Applied to drm-misc-next, thanks.
For the others I'll assume drivers maintainers will pick them up. If not
pls ping/resend and I'll stuff all the remaining ones into drm-misc-next.
Thanks, Daniel
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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^ permalink raw reply [flat|nested] 4+ messages in thread* Re: [PATCH] panel: rocktech: no need to check return value of debugfs_create functions
2019-06-13 13:09 ` Daniel Vetter
@ 2019-06-13 13:23 ` Greg Kroah-Hartman
0 siblings, 0 replies; 4+ messages in thread
From: Greg Kroah-Hartman @ 2019-06-13 13:23 UTC (permalink / raw)
To: Daniel Vetter; +Cc: David Airlie, Guido Günther, Thierry Reding, dri-devel
On Thu, Jun 13, 2019 at 03:09:53PM +0200, Daniel Vetter wrote:
> On Thu, Jun 13, 2019 at 02:16:16PM +0200, Guido Günther wrote:
> > Hi,
> > On Thu, Jun 13, 2019 at 01:57:17PM +0200, Greg Kroah-Hartman wrote:
> > > When calling debugfs functions, there is no need to ever check the
> > > return value. The function can work or not, but the code logic should
> > > never do something different based on this.
> > >
> > > Cc: "Guido Günther" <agx@sigxcpu.org>
> > > Cc: Thierry Reding <thierry.reding@gmail.com>
> > > Cc: David Airlie <airlied@linux.ie>
> > > Cc: Daniel Vetter <daniel@ffwll.ch>
> > > Cc: dri-devel@lists.freedesktop.org
> > > Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> > > ---
> > > drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c | 14 +++-----------
> > > 1 file changed, 3 insertions(+), 11 deletions(-)
> > >
> > > diff --git a/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c b/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c
> > > index d88ea8da2ec2..6dcb692c4701 100644
> > > --- a/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c
> > > +++ b/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c
> > > @@ -257,20 +257,12 @@ static int allpixelson_set(void *data, u64 val)
> > > DEFINE_SIMPLE_ATTRIBUTE(allpixelson_fops, NULL,
> > > allpixelson_set, "%llu\n");
> > >
> > > -static int jh057n_debugfs_init(struct jh057n *ctx)
> > > +static void jh057n_debugfs_init(struct jh057n *ctx)
> > > {
> > > - struct dentry *f;
> > > -
> > > ctx->debugfs = debugfs_create_dir(DRV_NAME, NULL);
> > > - if (!ctx->debugfs)
> > > - return -ENOMEM;
> > >
> > > - f = debugfs_create_file("allpixelson", 0600,
> > > - ctx->debugfs, ctx, &allpixelson_fops);
> > > - if (!f)
> > > - return -ENOMEM;
> > > -
> > > - return 0;
> > > + debugfs_create_file("allpixelson", 0600, ctx->debugfs, ctx,
> > > + &allpixelson_fops);
> > > }
> > >
> > > static void jh057n_debugfs_remove(struct jh057n *ctx)
> >
> > Reviewed-by: Guido Günther <agx@sigxcpu.org>
>
> Applied to drm-misc-next, thanks.
>
> For the others I'll assume drivers maintainers will pick them up. If not
> pls ping/resend and I'll stuff all the remaining ones into drm-misc-next.
Thanks, will do.
greg k-h
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^ permalink raw reply [flat|nested] 4+ messages in thread
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2019-06-13 11:57 [PATCH] panel: rocktech: no need to check return value of debugfs_create functions Greg Kroah-Hartman
2019-06-13 12:16 ` Guido Günther
2019-06-13 13:09 ` Daniel Vetter
2019-06-13 13:23 ` Greg Kroah-Hartman
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