From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Vetter Subject: Re: [PATCH] drm/i915: Use kcalloc instead of kzalloc to allocate array Date: Tue, 17 Jan 2012 17:33:39 +0100 Message-ID: <20120117163339.GR4093@phenom.ffwll.local> References: <1322600880.1534.297.camel@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1322600880.1534.297.camel@localhost.localdomain> Sender: linux-kernel-owner@vger.kernel.org To: Thomas Meyer Cc: airlied@linux.ie, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org List-Id: dri-devel@lists.freedesktop.org On Tue, Nov 29, 2011 at 10:08:00PM +0100, Thomas Meyer wrote: > The advantage of kcalloc is, that will prevent integer overflows which could > result from the multiplication of number of elements and size and it is also > a bit nicer to read. > > The semantic patch that makes this change is available > in https://lkml.org/lkml/2011/11/25/107 > > Signed-off-by: Thomas Meyer Queued for -next, thanks for the patch. -Daniel > --- > > diff -u -p a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c > --- a/drivers/gpu/drm/i915/intel_bios.c 2011-11-13 11:07:23.820113543 +0100 > +++ b/drivers/gpu/drm/i915/intel_bios.c 2011-11-28 19:49:51.443206904 +0100 > @@ -572,7 +572,7 @@ parse_device_mapping(struct drm_i915_pri > DRM_DEBUG_KMS("no child dev is parsed from VBT\n"); > return; > } > - dev_priv->child_dev = kzalloc(sizeof(*p_child) * count, GFP_KERNEL); > + dev_priv->child_dev = kcalloc(count, sizeof(*p_child), GFP_KERNEL); > if (!dev_priv->child_dev) { > DRM_DEBUG_KMS("No memory space for child device\n"); > return; > _______________________________________________ > dri-devel mailing list > dri-devel@lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/dri-devel -- Daniel Vetter Mail: daniel@ffwll.ch Mobile: +41 (0)79 365 57 48