From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ot0-x244.google.com ([2607:f8b0:4003:c0f::244]) by bombadil.infradead.org with esmtps (Exim 4.89 #1 (Red Hat Linux)) id 1ed377-0000ev-Jg for linux-mtd@lists.infradead.org; Sun, 21 Jan 2018 00:03:59 +0000 Received: by mail-ot0-x244.google.com with SMTP id t35so4533707otd.13 for ; Sat, 20 Jan 2018 16:03:45 -0800 (PST) Subject: Re: [PATCH v3] mtd: nand: brcmnand: Disable prefetch by default To: Boris Brezillon Cc: Kamal Dasu , linux-mtd@lists.infradead.org, bcm-kernel-feedback-list@broadcom.com, richard@nod.at, stable@vger.kernel.org, marek.vasut@gmail.com, cyrille.pitchen@wedev4u.fr, computersforpeace@gmail.com, dwmw2@infradead.org References: <1515443808-31105-1-git-send-email-kdasu.kdev@gmail.com> <71de78c5-0081-a663-2383-638832766001@gmail.com> <20180121005321.313ebc2c@bbrezillon> From: Florian Fainelli Message-ID: <8fad16e0-21a3-e1a9-ca7c-4f2a20be6c68@gmail.com> Date: Sat, 20 Jan 2018 16:03:41 -0800 MIME-Version: 1.0 In-Reply-To: <20180121005321.313ebc2c@bbrezillon> Content-Type: text/plain; charset=windows-1252 Content-Language: en-US Content-Transfer-Encoding: 7bit List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On 01/20/2018 03:53 PM, Boris Brezillon wrote: > On Sat, 20 Jan 2018 15:13:35 -0800 > Florian Fainelli wrote: > >> On 01/08/2018 12:36 PM, Kamal Dasu wrote: >>> Brcm nand controller prefetch feature needs to be disabled >>> by default. Enabling affects performance on random reads as >>> well as dma reads. >>> >>> Signed-off-by: Kamal Dasu >>> Fixes: 27c5b17cd1b1 ("mtd: nand: add NAND driver "library" for Broadcom STB NAND controller") >>> Cc: stable@vger.kernel.org >> >> Boris, is there a reason this is not in your v4.16 pull request? > > Look carefully, it is there ;-). Indeed, I can't read, my bad. -- Florian