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Tsirkin" , Jason Wang , Christoph Lameter , Pekka Enberg , David Rientjes , Joonsoo Kim , Andrew Morton , Jaroslav Kysela , Takashi Iwai , linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, linux-kernel@vger.kernel.org, linux-edac@vger.kernel.org, linux-gpio@vger.kernel.org, kvm@vger.kernel.org, virtualization@lists.linux-foundation.org, netdev@vger.kernel.org, linux-mm@kvack.org, alsa-devel@alsa-project.org, Bartosz Golaszewski Subject: Re: [PATCH 6/8] drm: atomic: use krealloc_array() Message-ID: <20201027191930.GQ401619@phenom.ffwll.local> Mail-Followup-To: Bartosz Golaszewski , Andy Shevchenko , Sumit Semwal , Gustavo Padovan , Christian =?iso-8859-1?Q?K=F6nig?= , Mauro Carvalho Chehab , Borislav Petkov , Tony Luck , James Morse , Robert Richter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Alexander Shishkin , Linus Walleij , "Michael S . Tsirkin" , Jason Wang , Christoph Lameter , Pekka Enberg , David Rientjes , Joonsoo Kim , Andrew Morton , Jaroslav Kysela , Takashi Iwai , linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, linux-kernel@vger.kernel.org, linux-edac@vger.kernel.org, linux-gpio@vger.kernel.org, kvm@vger.kernel.org, virtualization@lists.linux-foundation.org, netdev@vger.kernel.org, linux-mm@kvack.org, alsa-devel@alsa-project.org, Bartosz Golaszewski References: <20201027121725.24660-1-brgl@bgdev.pl> <20201027121725.24660-7-brgl@bgdev.pl> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201027121725.24660-7-brgl@bgdev.pl> X-Operating-System: Linux phenom 5.7.0-1-amd64 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Tue, Oct 27, 2020 at 01:17:23PM +0100, Bartosz Golaszewski wrote: > From: Bartosz Golaszewski > > Use the helper that checks for overflows internally instead of manually > calculating the size of the new array. > > Signed-off-by: Bartosz Golaszewski Acked-by: Daniel Vetter I don't expect conflicts with this going through some other tree, so please make that happen. Or resend once I can apply this to drm trees. Thanks, Daniel > --- > drivers/gpu/drm/drm_atomic.c | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c > index 58527f151984..09ad6a2ec17b 100644 > --- a/drivers/gpu/drm/drm_atomic.c > +++ b/drivers/gpu/drm/drm_atomic.c > @@ -960,7 +960,8 @@ drm_atomic_get_connector_state(struct drm_atomic_state *state, > struct __drm_connnectors_state *c; > int alloc = max(index + 1, config->num_connector); > > - c = krealloc(state->connectors, alloc * sizeof(*state->connectors), GFP_KERNEL); > + c = krealloc_array(state->connectors, alloc, > + sizeof(*state->connectors), GFP_KERNEL); > if (!c) > return ERR_PTR(-ENOMEM); > > -- > 2.29.1 > -- Daniel Vetter Software Engineer, Intel Corporation http://blog.ffwll.ch