[PATCH] [RFC] mtd/uclinux: support ROM and allow passing the base address

[Uwe Kleine-König]

Hello,

On Tue, Oct 09, 2012 at 08:37:09PM +1000, Greg Ungerer wrote:
> On 10/09/2012 06:44 PM, Uwe Kleine-König wrote:
> >On Tue, Oct 09, 2012 at 01:29:46PM +1000, Greg Ungerer wrote:
> >>On 09/10/12 01:25, Uwe Kleine-K÷nig wrote:
> >>>This allows to put the filesystem at a defined address in ROM allowing
> >>>to save more precious RAM.
> >>>
> >>>I think it's save to default to ROM because the intention of using the
> >>>uclinux map is to use a romfs and so mtd-ram doesn't give you anything
> >>>that mtd-rom doesn't.
> >>>
> >>>Signed-off-by: Uwe Kleine-K├Ànig <u.kleine-koenig at pengutronix.de>
> >>
> >>Looks good to me, so:
> >>
> >>Acked-by: Greg Ungerer <gerg at uclinux.org>
> >>
> >>Couple of things to be aware of. Artem currently has a couple of
> >>patches against this file (looks like at least 1 of them is currently
> >>in linux-next). It will probably conflict with your changes, should
> >>be easy enough to fix up.
> >If you tell me a branch to test, I can do so.
> 
> Sure. All three patches I sent to the linux-mtd list are here:
> 
> The following changes since commit 979570e02981d4a8fc20b3cc8fd651856c98ee9d:
>   Linus Torvalds (1):
>         Linux 3.6-rc7
> 
> are available in the git repository at:
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu.git cfmmu
> 
> Greg Ungerer (3):
>       mtd: fix wrong usage of ioremap_nocache() in uclinux.c map driver
>       mtd: allow uclinux map driver to be used on any ColdFire CPU platform
>       mtd: clean up uclinux.c map driver
> 
>  drivers/mtd/maps/Kconfig   |    2 +-
>  drivers/mtd/maps/uclinux.c |   42
> +++++++++++++++++++-----------------------
>  2 files changed, 20 insertions(+), 24 deletions(-)
> 
> 
> As far as I can see Artem has pushed the first 2 into for linux-next,
> but not the third. I am hoping he hops in here and lets us know what
> his intentions are with the third...
This branch merged into my tree still works fine.

Something I noticed is that the printk cleanups could look a bit nicer
if you used

	#define pr_fmt(fmt)	"uclinux[mtd]: " fmt

and then pr_notice et al. But maybe this is only subjective.

Also I'm not sure if all the comments are still correct with my change.

(And btw, your mailer is broken regarding line breaking and non-ascii
characters.)

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |