From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jani Nikula Subject: Re: [PATCH 1/6] GPU-DRM-GMA500: Use kmalloc_array() in mid_get_vbt_data_r10() Date: Tue, 20 Sep 2016 13:06:35 +0300 Message-ID: <87vaxqlwb8.fsf@intel.com> References: <566ABCD9.1060404@users.sourceforge.net> <3c9785ef-4553-2e3d-2cb2-5cf6d1f31ccd@users.sourceforge.net> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org To: SF Markus Elfring , dri-devel@lists.freedesktop.org, Daniel Vetter , David Airlie , Patrik Jakobsson Cc: Julia Lawall , kernel-janitors@vger.kernel.org, LKML List-Id: dri-devel@lists.freedesktop.org On Tue, 20 Sep 2016, SF Markus Elfring wrote: > From: Markus Elfring > Date: Tue, 20 Sep 2016 08:54:07 +0200 > > A multiplication for the size determination of a memory allocation > indicated that an array data structure should be processed. > Thus use the corresponding function "kmalloc_array". > > This issue was detected by using the Coccinelle software. Did you test this running on the hardware? BR, Jani. > > Signed-off-by: Markus Elfring > --- > drivers/gpu/drm/gma500/mid_bios.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/gma500/mid_bios.c b/drivers/gpu/drm/gma500/mid_bios.c > index d75ecb3..a833568 100644 > --- a/drivers/gpu/drm/gma500/mid_bios.c > +++ b/drivers/gpu/drm/gma500/mid_bios.c > @@ -235,7 +235,7 @@ static int mid_get_vbt_data_r10(struct drm_psb_private *dev_priv, u32 addr) > if (read_vbt_r10(addr, &vbt)) > return -1; > > - gct = kmalloc(sizeof(*gct) * vbt.panel_count, GFP_KERNEL); > + gct = kmalloc_array(vbt.panel_count, sizeof(*gct), GFP_KERNEL); > if (!gct) > return -1; -- Jani Nikula, Intel Open Source Technology Center