Messages in this thread Patch in this message | | | Date | Mon, 6 Dec 2010 23:29:19 -0800 | From | Jason Lunz <> | Subject | [PATCH] mtd: allow mtd and jffs2 when ARCH=um |
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Allow parts of drivers/mtd to compile on uml by pushing the HAS_IOMEM dependencies down closer to the parts of mtd that actually need it. This allows enough of mtd to build to let jffs2 be used on uml.
Signed-off-by: Jason Lunz <lunz@acm.org> --- arch/um/Kconfig.rest | 4 +--- drivers/mtd/Kconfig | 1 - drivers/mtd/Makefile | 3 ++- drivers/mtd/chips/Kconfig | 4 ++++ drivers/mtd/devices/Kconfig | 8 ++++++++ drivers/mtd/maps/Kconfig | 4 ++++ drivers/mtd/mtdchar.c | 4 ++++ drivers/mtd/nand/Kconfig | 3 +++ drivers/mtd/onenand/Kconfig | 3 +++ include/linux/mtd/map.h | 2 ++ 10 files changed, 31 insertions(+), 5 deletions(-)
diff --git a/arch/um/Kconfig.rest b/arch/um/Kconfig.rest index 0ccad0f..e34f399 100644 --- a/arch/um/Kconfig.rest +++ b/arch/um/Kconfig.rest @@ -28,9 +28,7 @@ source "drivers/scsi/Kconfig" source "drivers/md/Kconfig" -if BROKEN - source "drivers/mtd/Kconfig" -endif +source "drivers/mtd/Kconfig" source "drivers/leds/Kconfig" diff --git a/drivers/mtd/Kconfig b/drivers/mtd/Kconfig index 1e2cbf5..a0e2a28 100644 --- a/drivers/mtd/Kconfig +++ b/drivers/mtd/Kconfig @@ -1,6 +1,5 @@ menuconfig MTD tristate "Memory Technology Device (MTD) support" - depends on HAS_IOMEM help Memory Technology Devices are flash, RAM and similar chips, often used for solid state file systems on embedded devices. This option diff --git a/drivers/mtd/Makefile b/drivers/mtd/Makefile index 760abc5..ffa2e15 100644 --- a/drivers/mtd/Makefile +++ b/drivers/mtd/Makefile @@ -30,6 +30,7 @@ obj-$(CONFIG_MTD_OOPS) += mtdoops.o nftl-objs := nftlcore.o nftlmount.o inftl-objs := inftlcore.o inftlmount.o -obj-y += chips/ lpddr/ maps/ devices/ nand/ onenand/ tests/ +obj-y += maps/ devices/ nand/ onenand/ tests/ +obj-$(CONFIG_HAS_IOMEM) += chips/ lpddr/ obj-$(CONFIG_MTD_UBI) += ubi/ diff --git a/drivers/mtd/chips/Kconfig b/drivers/mtd/chips/Kconfig index 35c6a23..27382c9 100644 --- a/drivers/mtd/chips/Kconfig +++ b/drivers/mtd/chips/Kconfig @@ -1,3 +1,5 @@ +if HAS_IOMEM + menu "RAM/ROM/Flash chip drivers" depends on MTD!=n @@ -240,3 +242,5 @@ config MTD_XIP then say N. endmenu + +endif # HAS_IOMEM diff --git a/drivers/mtd/devices/Kconfig b/drivers/mtd/devices/Kconfig index 35081ce..8f6d85d 100644 --- a/drivers/mtd/devices/Kconfig +++ b/drivers/mtd/devices/Kconfig @@ -112,6 +112,8 @@ config MTD_SST25L Set up your spi devices with the right board-specific platform data, if you want to specify device partitioning. +if HAS_IOMEM + config MTD_SLRAM tristate "Uncached system RAM" help @@ -128,6 +130,8 @@ config MTD_PHRAM doesn't have access to, memory beyond the mem=xxx limit, nvram, memory on the video card, etc... +endif # HAS_IOMEM + config MTD_LART tristate "28F160xx flash driver for LART" depends on SA1100_LART @@ -187,6 +191,8 @@ config MTD_BLOCK2MTD Testing MTD users (eg JFFS2) on large media and media that might be removed during a write (using the floppy drive). +if HAS_IOMEM + comment "Disk-On-Chip Device Drivers" config MTD_DOC2000 @@ -249,6 +255,8 @@ config MTD_DOC2001PLUS under "NAND Flash Device Drivers" (currently that driver does not support all Millennium Plus devices). +endif # HAS_IOMEM + config MTD_DOCPROBE tristate select MTD_DOCECC diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig index a0dd7bb..e793b29 100644 --- a/drivers/mtd/maps/Kconfig +++ b/drivers/mtd/maps/Kconfig @@ -1,3 +1,5 @@ +if HAS_IOMEM + menu "Mapping drivers for chip access" depends on MTD!=n @@ -553,3 +555,5 @@ config MTD_PISMO When built as a module, it will be called pismo.ko endmenu + +endif # HAS_IOMEM diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c index 4759d82..a434354 100644 --- a/drivers/mtd/mtdchar.c +++ b/drivers/mtd/mtdchar.c @@ -1075,6 +1075,7 @@ static unsigned long mtd_get_unmapped_area(struct file *file, /* * set up a mapping for shared memory segments */ +#ifdef CONFIG_HAS_IOMEM static int mtd_mmap(struct file *file, struct vm_area_struct *vma) { #ifdef CONFIG_MMU @@ -1113,6 +1114,7 @@ static int mtd_mmap(struct file *file, struct vm_area_struct *vma) return vma->vm_flags & VM_SHARED ? 0 : -ENOSYS; #endif } +#endif static const struct file_operations mtd_fops = { .owner = THIS_MODULE, @@ -1125,7 +1127,9 @@ static const struct file_operations mtd_fops = { #endif .open = mtd_open, .release = mtd_close, +#ifdef CONFIG_HAS_IOMEM .mmap = mtd_mmap, +#endif #ifndef CONFIG_MMU .get_unmapped_area = mtd_get_unmapped_area, #endif diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig index 8229802..8bdd465 100644 --- a/drivers/mtd/nand/Kconfig +++ b/drivers/mtd/nand/Kconfig @@ -10,6 +10,8 @@ config MTD_NAND_ECC_SMC The original Linux implementation had byte 0 and 1 swapped. +if HAS_IOMEM + menuconfig MTD_NAND tristate "NAND Device Support" depends on MTD @@ -533,3 +535,4 @@ config MTD_NAND_FSMC Flexible Static Memory Controller (FSMC) endif # MTD_NAND +endif # HAS_IOMEM diff --git a/drivers/mtd/onenand/Kconfig b/drivers/mtd/onenand/Kconfig index 4dbd0f5..166aa18 100644 --- a/drivers/mtd/onenand/Kconfig +++ b/drivers/mtd/onenand/Kconfig @@ -1,3 +1,5 @@ +if HAS_IOMEM + menuconfig MTD_ONENAND tristate "OneNAND Device Support" depends on MTD @@ -75,3 +77,4 @@ config MTD_ONENAND_SIM OneNAND MTD layer. endif # MTD_ONENAND +endif # HAS_IOMEM diff --git a/include/linux/mtd/map.h b/include/linux/mtd/map.h index a9e6ba4..c7233ba 100644 --- a/include/linux/mtd/map.h +++ b/include/linux/mtd/map.h @@ -388,6 +388,7 @@ static inline map_word map_word_ff(struct map_info *map) return r; } +#ifdef CONFIG_HAS_IOMEM static inline map_word inline_map_read(struct map_info *map, unsigned long ofs) { map_word r; @@ -439,6 +440,7 @@ static inline void inline_map_copy_to(struct map_info *map, unsigned long to, co { memcpy_toio(map->virt + to, from, len); } +#endif /* CONFIG_HAS_IOMEM */ #ifdef CONFIG_MTD_COMPLEX_MAPPINGS #define map_read(map, ofs) (map)->read(map, ofs) -- 1.7.2.3
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