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Message-ID: <CAOw6vb+PqxeU4ioJ0SxF2W_zEJBJHg8PdJYEyF1M0wxXNzU5_A@mail.gmail.com>
Date: Thu, 21 Jul 2016 14:07:53 -0400
From: Sean Paul <seanpaul@...omium.org>
To: SF Markus Elfring <elfring@...rs.sourceforge.net>
Cc: dri-devel <dri-devel@...ts.freedesktop.org>,
Linux ARM Kernel <linux-arm-kernel@...ts.infradead.org>,
linux-samsung-soc <linux-samsung-soc@...r.kernel.org>,
Daniel Vetter <daniel@...ll.ch>,
David Airlie <airlied@...ux.ie>,
Inki Dae <inki.dae@...sung.com>,
Joonyoung Shim <jy0922.shim@...sung.com>,
Krzysztof Kozlowski <k.kozlowski@...sung.com>,
Kukjin Kim <kgene@...nel.org>,
Kyungmin Park <kyungmin.park@...sung.com>,
Seung-Woo Kim <sw0312.kim@...sung.com>,
Julia Lawall <julia.lawall@...6.fr>,
kernel-janitors@...r.kernel.org,
LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] GPU-DRM-Exynos: Delete an unnecessary check before the
function call "vunmap"
On Thu, Jul 21, 2016 at 1:42 PM, SF Markus Elfring
<elfring@...rs.sourceforge.net> wrote:
> From: Markus Elfring <elfring@...rs.sourceforge.net>
> Date: Thu, 21 Jul 2016 19:23:25 +0200
>
> The vunmap() function performs also input parameter validation.
> Thus the test around the call is not needed.
>
> This issue was detected by using the Coccinelle software.
>
> Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
Applied to drm-misc
> ---
> drivers/gpu/drm/exynos/exynos_drm_fbdev.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
> index dd09117..4cfb39d 100644
> --- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
> +++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
> @@ -269,8 +269,7 @@ static void exynos_drm_fbdev_destroy(struct drm_device *dev,
> struct exynos_drm_gem *exynos_gem = exynos_fbd->exynos_gem;
> struct drm_framebuffer *fb;
>
> - if (exynos_gem->kvaddr)
> - vunmap(exynos_gem->kvaddr);
> + vunmap(exynos_gem->kvaddr);
>
> /* release drm framebuffer and real buffer */
> if (fb_helper->fb && fb_helper->fb->funcs) {
> --
> 2.9.2
>
> _______________________________________________
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> dri-devel@...ts.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
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