| Message ID | 20171011032621.26979-3-nicolas.pitre@linaro.org |
|---|---|
| State | Superseded |
| Headers | show |
| Series | unconfuse get_unmapped_area and point/unpoint driver methods | expand |
On Wed, Oct 11, 2017 at 5:26 AM, Nicolas Pitre <nicolas.pitre@linaro.org> wrote: > Signed-off-by: Nicolas Pitre <nico@linaro.org> > --- > drivers/mtd/chips/map_ram.c | 24 ++++++++++++++++++++++++ > 1 file changed, 24 insertions(+) > > diff --git a/drivers/mtd/chips/map_ram.c b/drivers/mtd/chips/map_ram.c > index afb43d5e17..c3939dd230 100644 > --- a/drivers/mtd/chips/map_ram.c > +++ b/drivers/mtd/chips/map_ram.c > @@ -22,6 +22,9 @@ static void mapram_nop (struct mtd_info *); > static struct mtd_info *map_ram_probe(struct map_info *map); > static unsigned long mapram_unmapped_area(struct mtd_info *, unsigned long, > unsigned long, unsigned long); > +static int mapram_point (struct mtd_info *mtd, loff_t from, size_t len, > + size_t *retlen, void **virt, resource_size_t *phys); > +static int mapram_unpoint(struct mtd_info *mtd, loff_t from, size_t len); > > > static struct mtd_chip_driver mapram_chipdrv = { > @@ -69,7 +72,9 @@ static struct mtd_info *map_ram_probe(struct map_info *map) > mtd->_read = mapram_read; > mtd->_write = mapram_write; > mtd->_panic_write = mapram_write; > + mtd->_point = mapram_point; > mtd->_sync = mapram_nop; > + mtd->_unpoint = mapram_unpoint; > mtd->flags = MTD_CAP_RAM; > mtd->writesize = 1; > > @@ -96,6 +101,25 @@ static unsigned long mapram_unmapped_area(struct mtd_info *mtd, > return (unsigned long) map->virt + offset; > } > > +static int mapram_point(struct mtd_info *mtd, loff_t from, size_t len, > + size_t *retlen, void **virt, resource_size_t *phys) > +{ > + struct map_info *map = mtd->priv; > + > + if (!map->virt) > + return -EINVAL; > + *virt = map->virt + from; > + if (phys) > + *phys = map->phys + from; > + *retlen = len; > + return 0; > +} > + > +static int mapram_unpoint(struct mtd_info *mtd, loff_t from, size_t len) > +{ > + return 0; > +} > + Reviewed-by: Richard Weinberger <richard@nod.at>
diff --git a/drivers/mtd/chips/map_ram.c b/drivers/mtd/chips/map_ram.c index afb43d5e17..c3939dd230 100644 --- a/drivers/mtd/chips/map_ram.c +++ b/drivers/mtd/chips/map_ram.c @@ -22,6 +22,9 @@ static void mapram_nop (struct mtd_info *); static struct mtd_info *map_ram_probe(struct map_info *map); static unsigned long mapram_unmapped_area(struct mtd_info *, unsigned long, unsigned long, unsigned long); +static int mapram_point (struct mtd_info *mtd, loff_t from, size_t len, + size_t *retlen, void **virt, resource_size_t *phys); +static int mapram_unpoint(struct mtd_info *mtd, loff_t from, size_t len); static struct mtd_chip_driver mapram_chipdrv = { @@ -69,7 +72,9 @@ static struct mtd_info *map_ram_probe(struct map_info *map) mtd->_read = mapram_read; mtd->_write = mapram_write; mtd->_panic_write = mapram_write; + mtd->_point = mapram_point; mtd->_sync = mapram_nop; + mtd->_unpoint = mapram_unpoint; mtd->flags = MTD_CAP_RAM; mtd->writesize = 1; @@ -96,6 +101,25 @@ static unsigned long mapram_unmapped_area(struct mtd_info *mtd, return (unsigned long) map->virt + offset; } +static int mapram_point(struct mtd_info *mtd, loff_t from, size_t len, + size_t *retlen, void **virt, resource_size_t *phys) +{ + struct map_info *map = mtd->priv; + + if (!map->virt) + return -EINVAL; + *virt = map->virt + from; + if (phys) + *phys = map->phys + from; + *retlen = len; + return 0; +} + +static int mapram_unpoint(struct mtd_info *mtd, loff_t from, size_t len) +{ + return 0; +} + static int mapram_read (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf) { struct map_info *map = mtd->priv;
Signed-off-by: Nicolas Pitre <nico@linaro.org> --- drivers/mtd/chips/map_ram.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+)