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board: toradex: common: fail gracefully on missing NAND chip

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If the NAND chip is missing get_nand_dev_by_index() returns NULL. Fail
gracefully in this case.

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
This commit is contained in:
Stefan Agner 2018-08-06 09:19:18 +02:00 committed by Stefano Babic
parent 57b620255e
commit bc53fb19fe
1 changed files with 5 additions and 2 deletions
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7
board/toradex/common/tdx-cfg-block.c
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@ -156,10 +156,13 @@ out:
static int read_tdx_cfg_block_from_nand(unsigned char *config_block) static int read_tdx_cfg_block_from_nand(unsigned char *config_block)
{ {
size_t size = TDX_CFG_BLOCK_MAX_SIZE; size_t size = TDX_CFG_BLOCK_MAX_SIZE;
struct mtd_info *mtd = get_nand_dev_by_index(0);
if (!mtd)
return -ENODEV;
/* Read production parameter config block from NAND page */ /* Read production parameter config block from NAND page */
return nand_read_skip_bad(get_nand_dev_by_index(0), return nand_read_skip_bad(mtd, CONFIG_TDX_CFG_BLOCK_OFFSET,
CONFIG_TDX_CFG_BLOCK_OFFSET,
&size, NULL, TDX_CFG_BLOCK_MAX_SIZE, &size, NULL, TDX_CFG_BLOCK_MAX_SIZE,
config_block); config_block);
} }