Some drivers have special requirements for fixing up the partition nodes for the kernel. This adds a hook to struct mtd_info that can be used by drivers to replace the generic fixup with a special one.
Signed-off-by: Sascha Hauer <[email protected]> --- drivers/mtd/core.c | 30 +++++++++++++++++++++++++++++- include/linux/mtd/mtd.h | 2 ++ 2 files changed, 31 insertions(+), 1 deletion(-) diff --git a/drivers/mtd/core.c b/drivers/mtd/core.c index e21c71b816..af33ad665c 100644 --- a/drivers/mtd/core.c +++ b/drivers/mtd/core.c @@ -639,6 +639,34 @@ static int mtd_detect(struct device_d *dev) return ret; } +static int mtd_partition_fixup_generic(struct mtd_info *mtd, struct device_node *root) +{ + struct cdev *cdev = &mtd->cdev; + struct device_node *np, *mtdnp = mtd_get_of_node(mtd); + char *name; + + name = of_get_reproducible_name(mtdnp); + np = of_find_node_by_reproducible_name(root, name); + free(name); + if (!np) { + dev_err(&mtd->dev, "Cannot find nodepath %s, cannot fixup\n", + mtdnp->full_name); + return -EINVAL; + } + + return of_fixup_partitions(np, cdev); +} + +static int mtd_partition_fixup(struct device_node *root, void *ctx) +{ + struct mtd_info *mtd = ctx; + + if (mtd->of_fixup) + return mtd->of_fixup(mtd, root); + + return mtd_partition_fixup_generic(mtd, root); +} + int add_mtd_device(struct mtd_info *mtd, const char *devname, int device_id) { struct mtddev_hook *hook; @@ -706,7 +734,7 @@ int add_mtd_device(struct mtd_info *mtd, const char *devname, int device_id) dev_add_param_string(&mtd->dev, "partitions", mtd_partition_set, mtd_partition_get, &mtd->partition_string, mtd); if (IS_ENABLED(CONFIG_OFDEVICE) && np) { of_parse_partitions(&mtd->cdev, np); - ret = of_partitions_register_fixup(&mtd->cdev); + ret = of_register_fixup(mtd_partition_fixup, mtd); if (ret) goto err1; } diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index 0e2ff4526d..0d977fea25 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -206,6 +206,8 @@ struct mtd_info { int (*_block_markbad) (struct mtd_info *mtd, loff_t ofs); int (*_block_markgood) (struct mtd_info *mtd, loff_t ofs); + int (*of_fixup)(struct mtd_info *mtd, struct device_node *root); + /* ECC status information */ struct mtd_ecc_stats ecc_stats; /* Subpage shift (NAND) */ -- 2.20.1 _______________________________________________ barebox mailing list [email protected] http://lists.infradead.org/mailman/listinfo/barebox
