diff options
Diffstat (limited to 'drivers/mtd/maps/physmap_of.c')
| -rw-r--r-- | drivers/mtd/maps/physmap_of.c | 55 |
1 files changed, 49 insertions, 6 deletions
diff --git a/drivers/mtd/maps/physmap_of.c b/drivers/mtd/maps/physmap_of.c index 4147fe328c5..ba124baa646 100644 --- a/drivers/mtd/maps/physmap_of.c +++ b/drivers/mtd/maps/physmap_of.c @@ -173,12 +173,53 @@ static struct mtd_info * __devinit obsolete_probe(struct of_device *dev, } } +#ifdef CONFIG_MTD_PARTITIONS +/* When partitions are set we look for a linux,part-probe property which + specifies the list of partition probers to use. If none is given then the + default is use. These take precedence over other device tree + information. */ +static const char *part_probe_types_def[] = { "cmdlinepart", "RedBoot", NULL }; +static const char ** __devinit of_get_probes(struct device_node *dp) +{ + const char *cp; + int cplen; + unsigned int l; + unsigned int count; + const char **res; + + cp = of_get_property(dp, "linux,part-probe", &cplen); + if (cp == NULL) + return part_probe_types_def; + + count = 0; + for (l = 0; l != cplen; l++) + if (cp[l] == 0) + count++; + + res = kzalloc((count + 1)*sizeof(*res), GFP_KERNEL); + count = 0; + while (cplen > 0) { + res[count] = cp; + l = strlen(cp) + 1; + cp += l; + cplen -= l; + count++; + } + return res; +} + +static void __devinit of_free_probes(const char **probes) +{ + if (probes != part_probe_types_def) + kfree(probes); +} +#endif + static int __devinit of_flash_probe(struct of_device *dev, const struct of_device_id *match) { #ifdef CONFIG_MTD_PARTITIONS - static const char *part_probe_types[] - = { "cmdlinepart", "RedBoot", NULL }; + const char **part_probe_types; #endif struct device_node *dp = dev->dev.of_node; struct resource res; @@ -218,7 +259,7 @@ static int __devinit of_flash_probe(struct of_device *dev, dev_set_drvdata(&dev->dev, info); - mtd_list = kzalloc(sizeof(struct mtd_info) * count, GFP_KERNEL); + mtd_list = kzalloc(sizeof(*mtd_list) * count, GFP_KERNEL); if (!mtd_list) goto err_flash_remove; @@ -307,12 +348,14 @@ static int __devinit of_flash_probe(struct of_device *dev, goto err_out; #ifdef CONFIG_MTD_PARTITIONS - /* First look for RedBoot table or partitions on the command - * line, these take precedence over device tree information */ + part_probe_types = of_get_probes(dp); err = parse_mtd_partitions(info->cmtd, part_probe_types, &info->parts, 0); - if (err < 0) + if (err < 0) { + of_free_probes(part_probe_types); return err; + } + of_free_probes(part_probe_types); #ifdef CONFIG_MTD_OF_PARTS if (err == 0) { |