All of lore.kernel.org
 help / color / mirror / Atom feed
From: Joe Perches <joe@perches.com>
To: Nishad Kamdar <nishadkamdar@gmail.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: NeilBrown <neil@brown.name>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	Sergio Paracuellos <sergio.paracuellos@gmail.com>,
	Kees Cook <keescook@chromium.org>,
	John Crispin <blogic@openwrt.org>,
	devel@driverdev.osuosl.org, linux-arm-kernel@lists.infradead.org,
	linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] staging: mt7621-pinctrl: Remove space after cast
Date: Wed, 23 Jan 2019 09:45:53 -0800	[thread overview]
Message-ID: <b51b1d3071aec95915d48159c1dd6e0a336cd9f4.camel@perches.com> (raw)
In-Reply-To: <20190123163122.GA4807@nishad>

On Wed, 2019-01-23 at 22:01 +0530, Nishad Kamdar wrote:
> This patch removes space after a cast as it
> is not needed.
> Issue found by checkpatch.
> 
> Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
> ---
>  drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c b/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c
> index 80e7067cfb79..3e959fa73703 100644
> --- a/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c
> +++ b/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c
> @@ -363,7 +363,7 @@ static int rt2880_pinmux_probe(struct platform_device *pdev)
>  		}
>  
>  		range = devm_kzalloc(p->dev, sizeof(*range) + 4, GFP_KERNEL);
> -		range->name = name = (char *) &range[1];
> +		range->name = name = (char *)&range[1];
>  		sprintf(name, "pio");

I find this code unsightly and fragile.
It doesn't test the return of devm_kzalloc for failure.

This might as well be
---
 drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c b/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c
index 80e7067cfb79..9b52d44abef1 100644
--- a/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c
+++ b/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c
@@ -350,7 +350,6 @@ static int rt2880_pinmux_probe(struct platform_device *pdev)
 	for_each_compatible_node(np, NULL, "ralink,rt2880-gpio") {
 		const __be32 *ngpio, *gpiobase;
 		struct pinctrl_gpio_range *range;
-		char *name;
 
 		if (!of_device_is_available(np))
 			continue;
@@ -362,9 +361,10 @@ static int rt2880_pinmux_probe(struct platform_device *pdev)
 			return -EINVAL;
 		}
 
-		range = devm_kzalloc(p->dev, sizeof(*range) + 4, GFP_KERNEL);
-		range->name = name = (char *) &range[1];
-		sprintf(name, "pio");
+		range = devm_kzalloc(p->dev, sizeof(*range), GFP_KERNEL);
+		if (!range)
+			return -ENOMEM;
+		range->name = "pio";
 		range->npins = __be32_to_cpu(*ngpio);
 		range->base = __be32_to_cpu(*gpiobase);
 		range->pin_base = range->base;
	
	


WARNING: multiple messages have this Message-ID (diff)
From: Joe Perches <joe@perches.com>
To: Nishad Kamdar <nishadkamdar@gmail.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: devel@driverdev.osuosl.org, Kees Cook <keescook@chromium.org>,
	Sergio Paracuellos <sergio.paracuellos@gmail.com>,
	linux-kernel@vger.kernel.org,
	Matthias Brugger <matthias.bgg@gmail.com>,
	linux-mediatek@lists.infradead.org, NeilBrown <neil@brown.name>,
	linux-arm-kernel@lists.infradead.org,
	John Crispin <blogic@openwrt.org>
Subject: Re: [PATCH] staging: mt7621-pinctrl: Remove space after cast
Date: Wed, 23 Jan 2019 09:45:53 -0800	[thread overview]
Message-ID: <b51b1d3071aec95915d48159c1dd6e0a336cd9f4.camel@perches.com> (raw)
In-Reply-To: <20190123163122.GA4807@nishad>

On Wed, 2019-01-23 at 22:01 +0530, Nishad Kamdar wrote:
> This patch removes space after a cast as it
> is not needed.
> Issue found by checkpatch.
> 
> Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com>
> ---
>  drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c b/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c
> index 80e7067cfb79..3e959fa73703 100644
> --- a/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c
> +++ b/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c
> @@ -363,7 +363,7 @@ static int rt2880_pinmux_probe(struct platform_device *pdev)
>  		}
>  
>  		range = devm_kzalloc(p->dev, sizeof(*range) + 4, GFP_KERNEL);
> -		range->name = name = (char *) &range[1];
> +		range->name = name = (char *)&range[1];
>  		sprintf(name, "pio");

I find this code unsightly and fragile.
It doesn't test the return of devm_kzalloc for failure.

This might as well be
---
 drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c b/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c
index 80e7067cfb79..9b52d44abef1 100644
--- a/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c
+++ b/drivers/staging/mt7621-pinctrl/pinctrl-rt2880.c
@@ -350,7 +350,6 @@ static int rt2880_pinmux_probe(struct platform_device *pdev)
 	for_each_compatible_node(np, NULL, "ralink,rt2880-gpio") {
 		const __be32 *ngpio, *gpiobase;
 		struct pinctrl_gpio_range *range;
-		char *name;
 
 		if (!of_device_is_available(np))
 			continue;
@@ -362,9 +361,10 @@ static int rt2880_pinmux_probe(struct platform_device *pdev)
 			return -EINVAL;
 		}
 
-		range = devm_kzalloc(p->dev, sizeof(*range) + 4, GFP_KERNEL);
-		range->name = name = (char *) &range[1];
-		sprintf(name, "pio");
+		range = devm_kzalloc(p->dev, sizeof(*range), GFP_KERNEL);
+		if (!range)
+			return -ENOMEM;
+		range->name = "pio";
 		range->npins = __be32_to_cpu(*ngpio);
 		range->base = __be32_to_cpu(*gpiobase);
 		range->pin_base = range->base;
	
	


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  reply	other threads:[~2019-01-23 17:46 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-23 16:31 [PATCH] staging: mt7621-pinctrl: Remove space after cast Nishad Kamdar
2019-01-23 16:31 ` Nishad Kamdar
2019-01-23 17:45 ` Joe Perches [this message]
2019-01-23 17:45   ` Joe Perches
2019-01-25 15:17   ` Nishad Kamdar
2019-01-25 15:17     ` Nishad Kamdar

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=b51b1d3071aec95915d48159c1dd6e0a336cd9f4.camel@perches.com \
    --to=joe@perches.com \
    --cc=blogic@openwrt.org \
    --cc=devel@driverdev.osuosl.org \
    --cc=gregkh@linuxfoundation.org \
    --cc=keescook@chromium.org \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-mediatek@lists.infradead.org \
    --cc=matthias.bgg@gmail.com \
    --cc=neil@brown.name \
    --cc=nishadkamdar@gmail.com \
    --cc=sergio.paracuellos@gmail.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.