From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from the.earth.li ([193.201.200.66]) by canuck.infradead.org with esmtps (Exim 4.54 #1 (Red Hat Linux)) id 1FEDN2-00085F-M7 for linux-mtd@lists.infradead.org; Tue, 28 Feb 2006 17:31:06 -0500 Date: Tue, 28 Feb 2006 22:25:59 +0000 From: Jonathan McDowell To: Ben Dooks Message-ID: <20060228222559.GC14749@earth.li> References: <20060228205903.GZ14749@earth.li> <20060228221243.GC25880@home.fluff.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20060228221243.GC25880@home.fluff.org> Cc: linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] Make nand block functions use provided byte/word helpers. List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Tue, Feb 28, 2006 at 10:12:43PM +0000, Ben Dooks wrote: > On Tue, Feb 28, 2006 at 08:59:03PM +0000, Jonathan McDowell wrote: > > I've been writing a NAND driver for the flash on the Amstrad E3. One of > > the peculiarities of this device is that the write & read enable lines > > are on a latch, rather than strobed by the act of reading/writing from > > the data latch. As such I've got custom read_byte/write_byte functions > > defined. However the nand_*_buf functions in drivers/mtd/nand/nand_base.c > > are all appropriate, except for the fact they call readb/writeb > > themselves, instead of using this->read_byte or this->write_byte. The > > patch below changes them to use these functions, meaning a driver just > > needs to define read_byte and write_byte functions and gains all the > > nand_*_buf functions free. > > Why not make life easier on everyone else by over-riding the > functions for read/write buffer (etc) in the nand driver... less > intrusive into the core code! If the patch is deemed too intrusive then that's what I'll do; I nearly did so originally but when I caught myself cut and pasting the code from nand_base I thought my patch was the cleaner way. The patch shouldn't cause any extra work for anyone that I can see and I don't think it's intrusive at all; I submitted it because I figured it might save someone else some work down the line as well. J. -- noodles is fat This .sig brought to you by the letter M and the number 5 Product of the Republic of HuggieTag