From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.bootlin.com ([62.4.15.54]) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1fgGDw-0001zE-3V for linux-mtd@lists.infradead.org; Thu, 19 Jul 2018 21:12:36 +0000 Date: Thu, 19 Jul 2018 23:12:14 +0200 From: Miquel Raynal To: Boris Brezillon Cc: Richard Weinberger , David Woodhouse , Brian Norris , Marek Vasut , linux-mtd@lists.infradead.org, stable@vger.kernel.org Subject: Re: [PATCH v2] mtd: rawnand: make subop helpers return unsigned values Message-ID: <20180719231214.141c66b9@xps13> In-Reply-To: <20180719004335.3f92a927@bbrezillon> References: <20180718220912.7758-1-miquel.raynal@bootlin.com> <20180719003134.3512f18e@bbrezillon> <20180719004211.4829aa8a@xps13> <20180719004335.3f92a927@bbrezillon> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , > > > > A report from Colin Ian King pointed a CoverityScan issue where error > > > > values on these helpers where not checked in the drivers. These > > > > helpers can error out only in case of a software bug in driver code, > > > > not because of a runtime/hardware error. Hence, let's WARN_ON() in this > > > > case and return 0 which is harmless anyway. > > > > > > > > Fixes: 8878b126df76 ("mtd: nand: add ->exec_op() implementation") > > > > Cc: stable@vger.kernel.org > > > > > > Is it really worth backporting this patch? I mean, the bug does not > > > exist, it's just a potential problem that can only arise when > > > drivers/core are buggy, which AFAICT is not the case yet :-). > > > > Ok, I'll remove the Cc: stable tag but I guess I can keep the Fixes > > one. > > Sure. Applied to nand/next without the cc:stable tag. -- Miquel Raynal, Bootlin (formerly Free Electrons) Embedded Linux and Kernel engineering https://bootlin.com