chip->bits_per_cell which is used to determine the NAND cell type
(SLC/MLC) should always have a value != 0.
Complain loudly if the value is 0 in nand_is_slc() to catch use before
correct initialization.
Signed-off-by: Lothar Waßmann <l...@karo-electronics.de>
---
include/linux/mtd/rawnand.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h
index 94feece..2b05f42 100644
--- a/include/linux/mtd/rawnand.h
+++ b/include/linux/mtd/rawnand.h
@@ -1234,6 +1234,8 @@ int onfi_init_data_interface(struct nand_chip *chip,
*/
static inline bool nand_is_slc(struct nand_chip *chip)
{
+ WARN(chip->bits_per_cell == 0,
+ "chip->bits_per_cell is used uninitialized\n");
return chip->bits_per_cell == 1;
}
--
2.1.4
