[PATCH] Make nand block functions use provided byte/word helpers.

Jonathan McDowell noodles at earth.li
Tue Feb 28 17:25:59 EST 2006

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.


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