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mtd: nand: complain loudly when chip->bits_per_cell is not correctly initialized

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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 <LW@KARO-electronics.de>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
This commit is contained in:
Lothar Waßmann 2017-08-29 12:17:13 +02:00 committed by Boris Brezillon
parent 69fc01296c
commit 2d2a2b8c08
1 changed files with 2 additions and 0 deletions
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2
include/linux/mtd/rawnand.h
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@ -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;
}