From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-qt0-x242.google.com ([2607:f8b0:400d:c0d::242]) by bombadil.infradead.org with esmtps (Exim 4.89 #1 (Red Hat Linux)) id 1ed2Kg-0003GO-9I for linux-mtd@lists.infradead.org; Sat, 20 Jan 2018 23:13:56 +0000 Received: by mail-qt0-x242.google.com with SMTP id z10so12480387qti.5 for ; Sat, 20 Jan 2018 15:13:40 -0800 (PST) Subject: Re: [PATCH v3] mtd: nand: brcmnand: Disable prefetch by default To: Kamal Dasu , boris.brezillon@free-electrons.com, linux-mtd@lists.infradead.org, bcm-kernel-feedback-list@broadcom.com Cc: 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> From: Florian Fainelli Message-ID: <71de78c5-0081-a663-2383-638832766001@gmail.com> Date: Sat, 20 Jan 2018 15:13:35 -0800 MIME-Version: 1.0 In-Reply-To: <1515443808-31105-1-git-send-email-kdasu.kdev@gmail.com> 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 01/08/2018 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? If not, could you take that fix? Thank you -- Florian