| Message ID | 20181127205358.32502-1-linus.walleij@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | [1/2,v3] mtd: maps: Leave assigned complex mappings | expand |
On Tue, 27 Nov 2018 21:53:57 +0100 Linus Walleij <linus.walleij@linaro.org> wrote: > The simple_map_init() may need to be called with some > function pointers already assigned for complex mappings, > just bail out if complex handlers have already been > assigned. The commit message no longer matches what the patch does. How about: " mtd: maps: physmap: Leave assigned complex mappings SoC-specific drivers might provide their own map->xxx() implementation, and calling simple_map_init() unconditionally will override those implementations. Make sure map->read is NULL before calling simple_map_init(). " If you're okay with this new commit message, I can fix it when applying. Regards, Boris > > Signed-off-by: Linus Walleij <linus.walleij@linaro.org> > --- > ChangeLog v2->v3: > - Move check for pre-initialized simple map into > physmap-core.c > ChangeLog v1->v2: > - Rebase on latest MTD development branch > - Use a new approach as the code changed under me > --- > drivers/mtd/maps/physmap-core.c | 10 ++++++++-- > 1 file changed, 8 insertions(+), 2 deletions(-) > > diff --git a/drivers/mtd/maps/physmap-core.c b/drivers/mtd/maps/physmap-core.c > index e8c3b250d842..ecca7784de06 100644 > --- a/drivers/mtd/maps/physmap-core.c > +++ b/drivers/mtd/maps/physmap-core.c > @@ -514,10 +514,16 @@ static int physmap_flash_probe(struct platform_device *dev) > err = physmap_addr_gpios_map_init(&info->maps[i]); > if (err) > goto err_out; > - } else { > - simple_map_init(&info->maps[i]); > } > > + /* > + * Only use the simple_map implementation if map hooks are not > + * implemented. Since map->read() is mandatory checking for its > + * presence is enough. > + */ > + if (!info->maps[i].read) > + simple_map_init(&info->maps[i]); > + > if (info->probe_type) { > info->mtds[i] = do_map_probe(info->probe_type, > &info->maps[i]); ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/
On Sun, Dec 2, 2018 at 9:48 AM Boris Brezillon <boris.brezillon@bootlin.com> wrote: > On Tue, 27 Nov 2018 21:53:57 +0100 > Linus Walleij <linus.walleij@linaro.org> wrote: > > > The simple_map_init() may need to be called with some > > function pointers already assigned for complex mappings, > > just bail out if complex handlers have already been > > assigned. > > The commit message no longer matches what the patch does. > > How about: > > " > mtd: maps: physmap: Leave assigned complex mappings > > SoC-specific drivers might provide their own map->xxx() implementation, > and calling simple_map_init() unconditionally will override those > implementations. > > Make sure map->read is NULL before calling simple_map_init(). > " > > If you're okay with this new commit message, I can fix it when applying. Sure, go ahead Boris, thanks! Yours, Linus Walleij ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/
On Tue, 2018-11-27 at 20:53:57 UTC, Linus Walleij wrote: > The simple_map_init() may need to be called with some > function pointers already assigned for complex mappings, > just bail out if complex handlers have already been > assigned. > > Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Applied to http://git.infradead.org/linux-mtd.git mtd/next, thanks. Boris ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/
diff --git a/drivers/mtd/maps/physmap-core.c b/drivers/mtd/maps/physmap-core.c index e8c3b250d842..ecca7784de06 100644 --- a/drivers/mtd/maps/physmap-core.c +++ b/drivers/mtd/maps/physmap-core.c @@ -514,10 +514,16 @@ static int physmap_flash_probe(struct platform_device *dev) err = physmap_addr_gpios_map_init(&info->maps[i]); if (err) goto err_out; - } else { - simple_map_init(&info->maps[i]); } + /* + * Only use the simple_map implementation if map hooks are not + * implemented. Since map->read() is mandatory checking for its + * presence is enough. + */ + if (!info->maps[i].read) + simple_map_init(&info->maps[i]); + if (info->probe_type) { info->mtds[i] = do_map_probe(info->probe_type, &info->maps[i]);
The simple_map_init() may need to be called with some function pointers already assigned for complex mappings, just bail out if complex handlers have already been assigned. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> --- ChangeLog v2->v3: - Move check for pre-initialized simple map into physmap-core.c ChangeLog v1->v2: - Rebase on latest MTD development branch - Use a new approach as the code changed under me --- drivers/mtd/maps/physmap-core.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) -- 2.19.1 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/