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[MTD] partitioning utility predicates

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Move mtd_has_partitions() and mtd_has_cmdlinepart() inlines from a
DaVinci-specific driver to the <linux/mtd/partitions.h> header.

Use those to eliminate #ifdefs in two drivers which had their own
definitions of mtd_has_partitions().

Quite a lot of other MTD drivers could benefit from using use one or both
of these to remove #ifdeffery.  Maybe some Janitors would like to help.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
David Brownell 2009-03-04 12:01:41 -08:00 committed by David Woodhouse
parent 7ed8c7d440
commit a4b6d516a6
4 changed files with 24 additions and 34 deletions
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17
drivers/mtd/devices/m25p80.c
View File

@ -65,12 +65,6 @@
#define FAST_READ_DUMMY_BYTE 0
#endif
#ifdef CONFIG_MTD_PARTITIONS
#define mtd_has_partitions() (1)
#else
#define mtd_has_partitions() (0)
#endif
/****************************************************************************/
struct m25p {
@ -708,12 +702,13 @@ static int __devinit m25p_probe(struct spi_device *spi)
struct mtd_partition *parts = NULL;
int nr_parts = 0;
#ifdef CONFIG_MTD_CMDLINE_PARTS
static const char *part_probes[] = { "cmdlinepart", NULL, };
if (mtd_has_cmdlinepart()) {
static const char *part_probes[]
= { "cmdlinepart", NULL, };
nr_parts = parse_mtd_partitions(&flash->mtd,
part_probes, &parts, 0);
#endif
nr_parts = parse_mtd_partitions(&flash->mtd,
part_probes, &parts, 0);
}
if (nr_parts <= 0 && data && data->parts) {
parts = data->parts;

16
drivers/mtd/devices/mtd_dataflash.c
View File

@ -98,12 +98,6 @@ struct dataflash {
struct mtd_info mtd;
};
#ifdef CONFIG_MTD_PARTITIONS
#define mtd_has_partitions() (1)
#else
#define mtd_has_partitions() (0)
#endif
/* ......................................................................... */
/*
@ -682,11 +676,13 @@ add_dataflash_otp(struct spi_device *spi, char *name,
struct mtd_partition *parts;
int nr_parts = 0;
#ifdef CONFIG_MTD_CMDLINE_PARTS
static const char *part_probes[] = { "cmdlinepart", NULL, };
if (mtd_has_cmdlinepart()) {
static const char *part_probes[]
= { "cmdlinepart", NULL, };
nr_parts = parse_mtd_partitions(device, part_probes, &parts, 0);
#endif
nr_parts = parse_mtd_partitions(device,
part_probes, &parts, 0);
}
if (nr_parts <= 0 && pdata && pdata->parts) {
parts = pdata->parts;

13
drivers/mtd/nand/davinci_nand.c
View File

@ -38,19 +38,6 @@
#include <asm/mach-types.h>
#ifdef CONFIG_MTD_PARTITIONS
static inline int mtd_has_partitions(void) { return 1; }
#else
static inline int mtd_has_partitions(void) { return 0; }
#endif
#ifdef CONFIG_MTD_CMDLINE_PARTS
static inline int mtd_has_cmdlinepart(void) { return 1; }
#else
static inline int mtd_has_cmdlinepart(void) { return 0; }
#endif
/*
* This is a device driver for the NAND flash controller found on the
* various DaVinci family chips. It handles up to four SoC chipselects,

12
include/linux/mtd/partitions.h
View File

@ -76,4 +76,16 @@ int __devinit of_mtd_parse_partitions(struct device *dev,
struct device_node *node,
struct mtd_partition **pparts);
#ifdef CONFIG_MTD_PARTITIONS
static inline int mtd_has_partitions(void) { return 1; }
#else
static inline int mtd_has_partitions(void) { return 0; }
#endif
#ifdef CONFIG_MTD_CMDLINE_PARTS
static inline int mtd_has_cmdlinepart(void) { return 1; }
#else
static inline int mtd_has_cmdlinepart(void) { return 0; }
#endif
#endif