The environment is not guaranteed to contain a valid mtdids variable when called from mtd_search_alternate_name(). Call get_mtdids() instead of env_get("mtdids").
Fixes: ff4afa8a981e ("mtd: uboot: search for an equivalent MTD name with the mtdids") Signed-off-by: Boris Brezillon boris.brezillon@bootlin.com Reviewed-by: Miquel Raynal miquel.raynal@bootlin.com --- Changes in v2: - Add Miquel's R-b - Move board_mtdparts_default() prototype def to fix a build failure --- drivers/mtd/mtd_uboot.c | 49 ++++++++++++++++++++--------------------- 1 file changed, 24 insertions(+), 25 deletions(-)
diff --git a/drivers/mtd/mtd_uboot.c b/drivers/mtd/mtd_uboot.c index 6a3e64395de2..c4434d70520d 100644 --- a/drivers/mtd/mtd_uboot.c +++ b/drivers/mtd/mtd_uboot.c @@ -13,6 +13,29 @@
#define MTD_NAME_MAX_LEN 20
+void board_mtdparts_default(const char **mtdids, const char **mtdparts); + +static const char *get_mtdids(void) +{ + __maybe_unused const char *mtdparts = NULL; + const char *mtdids = env_get("mtdids"); + + if (mtdids) + return mtdids; + +#if defined(CONFIG_SYS_MTDPARTS_RUNTIME) + board_mtdparts_default(&mtdids, &mtdparts); +#elif defined(MTDIDS_DEFAULT) + mtdids = MTDIDS_DEFAULT; +#elif defined(CONFIG_MTDIDS_DEFAULT) + mtdids = CONFIG_MTDIDS_DEFAULT; +#endif + + if (mtdids) + env_set("mtdids", mtdids); + + return mtdids; +}
/** * mtd_search_alternate_name - Search an alternate name for @mtdname thanks to @@ -34,7 +57,7 @@ int mtd_search_alternate_name(const char *mtdname, char *altname, const char *mtdids, *equal, *comma, *dev_id, *mtd_id; int dev_id_len, mtd_id_len;
- mtdids = env_get("mtdids"); + mtdids = get_mtdids(); if (!mtdids) return -EINVAL;
@@ -92,30 +115,6 @@ static void mtd_probe_uclass_mtd_devs(void) { } #endif
#if defined(CONFIG_MTD_PARTITIONS) -extern void board_mtdparts_default(const char **mtdids, - const char **mtdparts); - -static const char *get_mtdids(void) -{ - __maybe_unused const char *mtdparts = NULL; - const char *mtdids = env_get("mtdids"); - - if (mtdids) - return mtdids; - -#if defined(CONFIG_SYS_MTDPARTS_RUNTIME) - board_mtdparts_default(&mtdids, &mtdparts); -#elif defined(MTDIDS_DEFAULT) - mtdids = MTDIDS_DEFAULT; -#elif defined(CONFIG_MTDIDS_DEFAULT) - mtdids = CONFIG_MTDIDS_DEFAULT; -#endif - - if (mtdids) - env_set("mtdids", mtdids); - - return mtdids; -}
#define MTDPARTS_MAXLEN 512