From 4cc9699be7ffc6072482240f5ba208488abe1090 Mon Sep 17 00:00:00 2001 From: Tom Rini Date: Mon, 15 Aug 2016 13:02:15 -0400 Subject: [PATCH] common: env_nand: Ensure that we have nand_info[0] prior to use Now that nand_info[] is an array of pointers we need to ensure that it's been populated prior to use. We may for example have ENV in NAND set in configurations that run on boards with and without NAND (where default env is fine enough, such as omap3_beagle and beagleboard (NAND) vs beagle xM (no NAND)). Fixes: b616d9b0a708 ("nand: Embed mtd_info in struct nand_chip") Cc: Scott Wood Signed-off-by: Tom Rini Acked-by: Scott Wood --- common/env_nand.c | 11 +++++++---- 1 file changed, 7 insertions(+), 4 deletions(-) diff --git a/common/env_nand.c b/common/env_nand.c index fc99a5e3fc..2e28171ae0 100644 --- a/common/env_nand.c +++ b/common/env_nand.c @@ -163,6 +163,9 @@ static int erase_and_write_env(const struct env_location *location, { int ret = 0; + if (!nand_info[0]) + return 1; + printf("Erasing %s...\n", location->name); if (nand_erase_opts(nand_info[0], &location->erase_opts)) return 1; @@ -247,10 +250,10 @@ static int readenv(size_t offset, u_char *buf) size_t blocksize, len; u_char *char_ptr; - blocksize = nand_info[0]->erasesize; - if (!blocksize) + if (!nand_info[0]) return 1; + blocksize = nand_info[0]->erasesize; len = min(blocksize, (size_t)CONFIG_ENV_SIZE); while (amount_loaded < CONFIG_ENV_SIZE && offset < end) { @@ -387,12 +390,12 @@ void env_relocate_spec(void) ALLOC_CACHE_ALIGN_BUFFER(char, buf, CONFIG_ENV_SIZE); #if defined(CONFIG_ENV_OFFSET_OOB) - ret = get_nand_env_oob(nand_info[0], &nand_env_oob_offset); /* * If unable to read environment offset from NAND OOB then fall through * to the normal environment reading code below */ - if (!ret) { + if (nand_info[0] && !get_nand_env_oob(nand_info[0], + &nand_env_oob_offset)) { printf("Found Environment offset in OOB..\n"); } else { set_default_env("!no env offset in OOB"); -- 2.39.5