Masahiro Yamada 336d139f87 mtd: rawnand: denali: do not pass zero maxchips to nand_scan() ... Commit 49aa76b166 ("mtd: rawnand: do not execute nand_scan_ident() if maxchips is zero") gave a new meaning for calling nand_scan_ident() with maxchips=0. It is a special usage for some drivers such as docg4, but actually the Denali driver may pass maxchips=0 to nand_scan() when the driver is enabled but no NAND chip is found on the board for some reasons. If nand_scan_with_ids() is called with maxchips=0, nand_scan_ident() is skipped, then nand_set_defaults() is skipped as well. Thus, the driver must set chip->controller beforehand. Otherwise, nand_attach() causes NULL pointer dereference. In fact, the Denali controller knows the number of connected chips before calling nand_scan_ident(); if DEVICE_RESET fails, there is no chip in that chip select. Then, denali_reset_banks() sets the maxchips to the number of detected chips. If no chip is found, maxchips is zero. In this case, there is no point for calling nand_scan() because we know it will fail for sure. Let's make the probe function fail immediately. Fixes: 49aa76b166 ("mtd: rawnand: do not execute nand_scan_ident() if maxchips is zero") Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Acked-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>		2018-08-27 20:41:46 +02:00
..
chips	NAND core changes:	2018-08-11 12:15:19 +02:00
devices	spi: Updates for v4.19	2018-08-14 12:01:08 -07:00
lpddr	mtd: lpddr: use mtd_device_register()	2018-07-24 07:50:22 +02:00
maps	mtd/maps: fix solutionengine.c printk format warnings	2018-07-24 22:43:10 +02:00
nand	mtd: rawnand: denali: do not pass zero maxchips to nand_scan()	2018-08-27 20:41:46 +02:00
parsers	mtd: parsers: trx: add of_match_table with the new DT binding	2018-07-07 10:51:00 +02:00
spi-nor	JFFS2 changes:	2018-08-14 10:57:44 -07:00
tests
ubi	ubi: expose the volume CRC check skip flag	2018-08-15 00:25:21 +02:00
afs.c
ar7part.c
bcm47xxpart.c
bcm63xxpart.c
cmdlinepart.c
ftl.c
inftlcore.c
inftlmount.c
Kconfig	mtd: Make Kconfig formatting consistent	2018-07-19 23:12:06 +02:00
Makefile
mtd_blkdevs.c
mtdblock_ro.c
mtdblock.c
mtdchar.c	mtdchar: fix overflows in adjustment of count	2018-07-18 16:46:38 +02:00
mtdconcat.c
mtdcore.c	mtd: Fallback to ->_read/write() when ->_read/write_oob() is missing	2018-07-18 16:44:03 +02:00
mtdcore.h
mtdoops.c
mtdpart.c	mtd: partitions: use DT info for parsing partitions with "compatible" prop	2018-07-24 23:04:27 +02:00
mtdsuper.c
mtdswap.c
nftlcore.c
nftlmount.c	mtd: nftl: remove redundant variable nb_erases	2018-07-07 10:55:05 +02:00
ofpart.c
redboot.c
rfd_ftl.c
sm_ftl.c
sm_ftl.h
ssfdc.c