diff options
| -rw-r--r-- | drivers/mtd/nand/nand_base.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 53ea79628dde..7f742c9c9015 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -4140,6 +4140,15 @@ int nand_scan_ident(struct mtd_info *mtd, int maxchips, if (!mtd->name && mtd->dev.parent) mtd->name = dev_name(mtd->dev.parent); + if ((!chip->cmdfunc || !chip->select_chip) && !chip->cmd_ctrl) { + /* + * Default functions assigned for chip_select() and + * cmdfunc() both expect cmd_ctrl() to be populated, + * so we need to check that that's the case + */ + pr_err("chip.cmd_ctrl() callback is not provided"); + return -EINVAL; + } /* Set the default functions */ nand_set_defaults(chip, chip->options & NAND_BUSWIDTH_16); |