From: linux@arm.linux.org.uk (Russell King - ARM Linux)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] mach_omap2: use PTR_RET instead of IS_ERR + PTR_ERR
Date: Tue, 12 Mar 2013 11:05:57 +0000 [thread overview]
Message-ID: <20130312110557.GF30923@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <1363075109-27038-1-git-send-email-silviupopescu1990@gmail.com>
On Tue, Mar 12, 2013 at 09:58:29AM +0200, Silviu-Mihai Popescu wrote:
> This uses PTR_RET instead of IS_ERR and PTR_ERR in order to increase
> readability.
>
> Signed-off-by: Silviu-Mihai Popescu <silviupopescu1990@gmail.com>
> ---
> arch/arm/mach-omap2/devices.c | 4 ++--
> arch/arm/mach-omap2/fb.c | 5 +----
> arch/arm/mach-omap2/gpmc.c | 2 +-
> arch/arm/mach-omap2/pmu.c | 5 +----
> 4 files changed, 5 insertions(+), 11 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/devices.c b/arch/arm/mach-omap2/devices.c
> index 1ec7f05..2a0816e 100644
> --- a/arch/arm/mach-omap2/devices.c
> +++ b/arch/arm/mach-omap2/devices.c
> @@ -66,7 +66,7 @@ static int __init omap3_l3_init(void)
>
> WARN(IS_ERR(pdev), "could not build omap_device for %s\n", oh_name);
>
> - return IS_ERR(pdev) ? PTR_ERR(pdev) : 0;
> + return PTR_RET(pdev);
This is incorrect.
The return value will be tested for < 0. Kernel pointers in general are
all above 3GB, and so are all "< 0".
I'm afraid none of these changes stuff is an improvement - they all
introduce bugs.
next prev parent reply other threads:[~2013-03-12 11:05 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-12 7:58 [PATCH] mach_omap2: use PTR_RET instead of IS_ERR + PTR_ERR Silviu-Mihai Popescu
2013-03-12 11:05 ` Russell King - ARM Linux [this message]
2013-03-20 18:28 ` Jon Hunter
2013-03-21 18:33 ` Silviu Popescu
2013-03-22 16:36 ` Russell King - ARM Linux
2013-03-22 18:39 ` Jon Hunter
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