From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from omta38.uswest2.a.cloudfilter.net (omta38.uswest2.a.cloudfilter.net [35.89.44.37]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 846231E8320 for ; Wed, 29 Apr 2026 22:47:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=35.89.44.37 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777502833; cv=none; b=N+Q/4J1w9ie0cwRb0TSjqWZmhEBjcJ1t+Urp4qxx3cGu2G2dEXlXMcZYGkIgPPhQO8ThRn3yObKUXhz9RPcOirJ+9YXmyDMn7F9Z7GF+DGAL/bH22QX3DU3ATztE6XeJl3Uwug6VgZtbtpNumfQt4fHA2lSFwRH3IV1kMjdBVJQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777502833; c=relaxed/simple; bh=2FBRGE8ggBHksrdTMC3gDJiqej/4D4HMm4MVPXEITxs=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=JKyk5ECkPUfm1AWSO4EdHkdZKpUCdpmxoKg6MZ/J3R1rVOhDPgsas06seYwtED8Pe/etSmyP4aWBB5U9fASkr8sZE/zV/S9oj7wo+bl45UfBfjaHiUAQGYwnzdmc4l240gX2EPfxI+lTFEHXsPUQ6xCEpf3ySoGQ7tPZ7od1ox0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=embeddedor.com; spf=pass smtp.mailfrom=embeddedor.com; dkim=pass (2048-bit key) header.d=embeddedor.com header.i=@embeddedor.com header.b=lAUS+CFU; arc=none smtp.client-ip=35.89.44.37 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=embeddedor.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=embeddedor.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=embeddedor.com header.i=@embeddedor.com header.b="lAUS+CFU" Received: from eig-obgw-6007b.ext.cloudfilter.net ([10.0.30.166]) by cmsmtp with ESMTPS id IAfyw21GAjw8YIDgOwH3GM; Wed, 29 Apr 2026 22:47:04 +0000 Received: from gator4166.hostgator.com ([108.167.190.91]) by cmsmtp with ESMTPS id IDgNwlqIkYO6jIDgNw4FwL; Wed, 29 Apr 2026 22:47:03 +0000 X-Authority-Analysis: v=2.4 cv=ffyty1QF c=1 sm=1 tr=0 ts=69f28a67 a=vY9Mjuda9oMEc2E4Cx1x2A==:117 a=vY9Mjuda9oMEc2E4Cx1x2A==:17 a=IkcTkHD0fZMA:10 a=A5OVakUREuEA:10 a=7T7KSl7uo7wA:10 a=VwQbUJbxAAAA:8 a=P1BnusSwAAAA:8 a=PHKDr0J8e_G5cKxf1GUA:9 a=QEXdDO2ut3YA:10 a=D0XLA9XvdZm18NrgonBM:22 a=2aFnImwKRvkU0tJ3nQRT:22 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=embeddedor.com; s=default; h=Content-Transfer-Encoding:Content-Type: In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date:Message-ID:Sender :Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=wqNKCeyUYF9KWGCcnKzNyPUhOdM5wDMY1RTineHLakg=; b=lAUS+CFUPPdU60AN2e+W2W/R5/ fD7XNhjoGBt+b3bub9TvdSDxZnCFkK624N6r8YeEj7MOgN1bcpP05iayQPbAqK18vLU7OT6uDMdIf 8/Y/O9KjWDvcgEuDWD+7kNCe1yVTXLfypFiPFhnkI4I65fbgqW1VbVJ0IcfgvT9iE9zSDtiCVMy1x 9QRKIB69ydD2kA6igr6f7eR2oxD1KRu7J042rdLTyQqrWgTlvdg9+2eoNaJ8WVqFRmhhJxBozdVNR b6lj5OpkEsY8w6fwBGdk7P4Trq5H4XzVZJNB0QAHhl/AwMF9RAZsd/0CcvJk6L+pQlt/PZPVQXHg/ vOC/JyKQ==; Received: from [177.238.19.10] (port=36338 helo=[192.168.0.36]) by gator4166.hostgator.com with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (Exim 4.99.1) (envelope-from ) id 1wIDgL-00000000Vqp-3tbR; Wed, 29 Apr 2026 17:47:02 -0500 Message-ID: Date: Wed, 29 Apr 2026 16:46:48 -0600 Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH][next] media: xilinx: Avoid -Wflex-array-member-not-at-end warning To: Laurent Pinchart , "Gustavo A. R. Silva" Cc: Mauro Carvalho Chehab , Michal Simek , linux-media@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org, Tomi Valkeinen References: <20260429202449.GA132396@killaraus.ideasonboard.com> <20260429202801.GB132396@killaraus.ideasonboard.com> Content-Language: en-US From: "Gustavo A. R. Silva" In-Reply-To: <20260429202801.GB132396@killaraus.ideasonboard.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - gator4166.hostgator.com X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - embeddedor.com X-BWhitelist: no X-Source-IP: 177.238.19.10 X-Source-L: No X-Exim-ID: 1wIDgL-00000000Vqp-3tbR X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: ([192.168.0.36]) [177.238.19.10]:36338 X-Source-Auth: gustavo@embeddedor.com X-Email-Count: 5 X-Org: HG=hgshared;ORG=hostgator; X-Source-Cap: Z3V6aWRpbmU7Z3V6aWRpbmU7Z2F0b3I0MTY2Lmhvc3RnYXRvci5jb20= X-Local-Domain: yes X-CMAE-Envelope: MS4xfO7qWywZghHYpRkDSYo/6XQeQz7xgZDQPZPPsqbyr3g2pBquRgaOmNr5e3RoiAgOnW4I2vqsj3ZgbJd6ZB+7eVvAfMTd0T/Ecf1W6Me9MLTOlBCzvtog DgTMR0k0B6Yf66Drco50cV3IdNENvXCWzAd5fPKFiGoCo6fY/XvpPbPk2lKSf40mOB7ns7TgSu6o4Q3RD7/r+U2NkGq0Mi94I6xG72E3o0/r6fe0JRBm6XSI On 4/29/26 14:28, Laurent Pinchart wrote: > I forgot to ask, how do you want to get this merged? Will you collect > all similar patches and send a tree-wide pull request, or should they be > merged by individual subsystems ? In the latter case, Tomi, could you > please handle this with other Xilinx patches ? You folks can take this in your tree. :) Thanks! -Gustavo > > On Wed, Apr 29, 2026 at 11:24:50PM +0300, Laurent Pinchart wrote: >> CC'ing Tomi Valkeinen. >> >> On a side note, Tomi, can I send a patch to add you to the "XILINX VIDEO >> IP CORES" section of MAINTAINERS ? >> >> On Wed, Apr 29, 2026 at 01:55:27PM -0600, Gustavo A. R. Silva wrote: >>> -Wflex-array-member-not-at-end was introduced in GCC-14, and we are >>> getting ready to enable it, globally. >>> >>> Use the TRAILING_OVERLAP() helper to fix the following warning: >>> >>> drivers/media/platform/xilinx/xilinx-dma.h:99:41: warning: structure containing a flexible array member is not at the end of another structure [-Wflex-array-member-not-at-end] >>> >>> This helper creates a union between a flexible-array member (FAM) >>> and a set of members that would otherwise follow it. This overlays >>> the trailing members onto the FAM while preserving the original >>> memory layout. >>> >>> Lastly, the static_assert() ensures the alignment between the FAM >>> and struct data_chunk sgl; is not inadvertently changed, and it's >>> intentionally placed inmediately after the related structure (that >>> is, no blank line in between). >>> >>> Signed-off-by: Gustavo A. R. Silva >> >> Reviewed-by: Laurent Pinchart >> >>> --- >>> drivers/media/platform/xilinx/xilinx-dma.h | 9 +++++++-- >>> 1 file changed, 7 insertions(+), 2 deletions(-) >>> >>> diff --git a/drivers/media/platform/xilinx/xilinx-dma.h b/drivers/media/platform/xilinx/xilinx-dma.h >>> index 18f77e1a7b39..65f6147ff6c6 100644 >>> --- a/drivers/media/platform/xilinx/xilinx-dma.h >>> +++ b/drivers/media/platform/xilinx/xilinx-dma.h >>> @@ -96,9 +96,14 @@ struct xvip_dma { >>> >>> struct dma_chan *dma; >>> unsigned int align; >>> - struct dma_interleaved_template xt; >>> - struct data_chunk sgl; >>> + >>> + /* Must be last as it ends in a flexible-array member. */ >>> + TRAILING_OVERLAP(struct dma_interleaved_template, xt, sgl, >>> + struct data_chunk sgl; >>> + ); >>> }; >>> +static_assert(offsetof(struct xvip_dma, xt.sgl) == >>> + offsetof(struct xvip_dma, sgl)); >>> >>> #define to_xvip_dma(vdev) container_of(vdev, struct xvip_dma, video) >>> >