From nobody Thu Feb 12 09:05:30 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DCA66C6FD18 for ; Tue, 25 Apr 2023 07:53:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233296AbjDYHxo (ORCPT ); Tue, 25 Apr 2023 03:53:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57934 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232854AbjDYHxk (ORCPT ); Tue, 25 Apr 2023 03:53:40 -0400 Received: from smtp.smtpout.orange.fr (smtp-23.smtpout.orange.fr [80.12.242.23]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CED5C9F for ; Tue, 25 Apr 2023 00:53:38 -0700 (PDT) Received: from pop-os.home ([86.243.2.178]) by smtp.orange.fr with ESMTPA id rDUWpfoNtvolhrDUWpTpgz; Tue, 25 Apr 2023 09:53:37 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=wanadoo.fr; s=t20230301; t=1682409217; bh=5mXZM2+8CUq1MLkMg5pCYcpJ5YHT+aXC4TWjV894QWw=; h=From:To:Cc:Subject:Date; b=TnvJO9+WncBBDJvXwGxUGPZpoAVDCM9dCNOGEU0rqOTlm0gCl3atNvsuo/MZ8D0rH hc0nxV3G5j9dk4MjnbEt5pxtRu3a51zzcVgZfeMTyvBzTvsvj1AxTgp4ivP59Mm0x8 bKanJ+IA/L/Kx3eKki/wsL6JLYoQy/dlOeOJxG4J4y04j1lanRs8//O8NRG9KlgURY 20CRQc+UCFa85ucEXacBZQbNhRusWfHXpxn9PfQP84aFcZSoEV2jbnfW0vHdun4dpF 1DSX9oeWmHjOJ25XWrYw+0p17UkCu0dT4oyE3FMZLHjSAxnNTE4pAjHCH4IF1g3u1v xLNqU7hYp7wzw== X-ME-Helo: pop-os.home X-ME-Auth: Y2hyaXN0b3BoZS5qYWlsbGV0QHdhbmFkb28uZnI= X-ME-Date: Tue, 25 Apr 2023 09:53:37 +0200 X-ME-IP: 86.243.2.178 From: Christophe JAILLET To: Harry Wentland , Leo Li , Rodrigo Siqueira , Alex Deucher , =?UTF-8?q?Christian=20K=C3=B6nig?= , "Pan, Xinhui" , David Airlie , Daniel Vetter Cc: linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org, Christophe JAILLET , amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [PATCH] drm/amd/display: Correctly initialize some memory in get_available_dsc_slices() Date: Tue, 25 Apr 2023 09:53:34 +0200 Message-Id: X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" The intent here is to clear the 'available_slices' buffer before setting some values in it. This is an array of int, so in order to fully initialize it, we must clear MIN_AVAILABLE_SLICES_SIZE * sizeof(int) bytes. Compute the right length of the buffer when calling memset(). Fixes: 97bda0322b8a ("drm/amd/display: Add DSC support for Navi (v2)") Signed-off-by: Christophe JAILLET --- NOT even compile-tested. make -j7 drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.o on my setup, it fails with: CC drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.o drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c:27:10: fatal error: dc_hw_types= .h: Aucun fichier ou dossier de ce type 27 | #include "dc_hw_types.h" | ^~~~~~~~~~~~~~~ I've not investigated why. --- drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c b/drivers/gpu/drm/= amd/display/dc/dsc/dc_dsc.c index b9a05bb025db..1d7384b2be28 100644 --- a/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c +++ b/drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c @@ -645,7 +645,7 @@ static int get_available_dsc_slices(union dsc_enc_slice= _caps slice_caps, int *av { int idx =3D 0; =20 - memset(available_slices, -1, MIN_AVAILABLE_SLICES_SIZE); + memset(available_slices, -1, MIN_AVAILABLE_SLICES_SIZE * sizeof(*availabl= e_slices)); =20 if (slice_caps.bits.NUM_SLICES_1) available_slices[idx++] =3D 1; --=20 2.34.1