Masahiro Yamada 0639ddca2c mtd: rawnand: denali: fix a race condition when DMA is kicked ...

commit cf51e4b9c3 upstream.

I thought the read-back of the DMA_ENABLE register was unnecessary
(at least it is working on my boards), then deleted it in commit
586a2c5290 ("mtd: nand: denali: squash denali_enable_dma() helper
into caller").  Sorry, I was wrong - it caused a timing issue on
Cyclone5 SoCFPGAs.

Revive the register read-back, commenting why this is necessary.

Fixes: 586a2c5290 ("mtd: nand: denali: squash denali_enable_dma() helper into caller")
Cc: <stable@vger.kernel.org>
Reported-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2018-09-29 02:55:56 -07:00

..

chips

mtd: cfi_cmdset_0002: Avoid walking all chips when unlocking.

2018-06-22 10:29:16 +02:00

devices

mtd: devices: m25p80: Make sure the buffer passed in op is DMA-able

2018-09-29 02:55:56 -07:00

lpddr

treewide: kmalloc() -> kmalloc_array()

2018-06-12 16:19:22 -07:00

maps

mtd/maps: fix solutionengine.c printk format warnings

2018-09-26 08:39:24 +02:00

nand

mtd: rawnand: denali: fix a race condition when DMA is kicked

2018-09-29 02:55:56 -07:00

parsers

treewide: kzalloc() -> kcalloc()

2018-06-12 16:19:22 -07:00

spi-nor

mtd: spi-nor: cadence-quadspi: Fix direct mode write timeouts

2018-07-03 10:01:44 +02:00

tests

treewide: kzalloc() -> kcalloc()

2018-06-12 16:19:22 -07:00

ubi

ubi: Initialize Fastmap checkmapping correctly

2018-09-15 09:46:49 +02:00

afs.c

…

ar7part.c

treewide: kzalloc() -> kcalloc()

2018-06-12 16:19:22 -07:00

bcm47xxpart.c

treewide: kzalloc() -> kcalloc()

2018-06-12 16:19:22 -07:00

bcm63xxpart.c

…

cmdlinepart.c

mtd: cmdlinepart: Update comment for introduction of OFFSET_CONTINUOUS

2018-05-23 10:08:48 +02:00

ftl.c

treewide: Use array_size() in vmalloc()

2018-06-12 16:19:22 -07:00

inftlcore.c

…

inftlmount.c

treewide: kmalloc() -> kmalloc_array()

2018-06-12 16:19:22 -07:00

Kconfig

mtd: Move onenand code base to drivers/mtd/nand/onenand

2018-03-15 15:40:37 +01:00

Makefile

mtd: Move onenand code base to drivers/mtd/nand/onenand

2018-03-15 15:40:37 +01:00

mtd_blkdevs.c

mtd_blkdevs: handle highmem pages

2018-05-11 15:07:58 -06:00

mtdblock_ro.c

…

mtdblock.c

mtd: Unconditionally update ->fail_addr and ->addr in part_erase()

2018-03-15 18:22:26 +01:00

mtdchar.c

mtdchar: fix overflows in adjustment of count

2018-09-26 08:39:35 +02:00

mtdconcat.c

treewide: kmalloc() -> kmalloc_array()

2018-06-12 16:19:22 -07:00

mtdcore.c

Merge tag 'mtd/for-4.18' of git://git.infradead.org/linux-mtd

2018-06-08 10:39:20 -07:00

mtdcore.h

mtd: move code adding (registering) partitions to the parse_mtd_partitions()

2018-05-07 10:10:47 +02:00

mtdoops.c

treewide: Use array_size() in vmalloc()

2018-06-12 16:19:22 -07:00

mtdpart.c

mtd: move code adding (registering) partitions to the parse_mtd_partitions()

2018-05-07 10:10:47 +02:00

mtdsuper.c

…

mtdswap.c

treewide: Use array_size() in vmalloc()

2018-06-12 16:19:22 -07:00

nftlcore.c

…

nftlmount.c

treewide: kmalloc() -> kmalloc_array()

2018-06-12 16:19:22 -07:00

ofpart.c

treewide: kzalloc() -> kcalloc()

2018-06-12 16:19:22 -07:00

redboot.c

…

rfd_ftl.c

treewide: Use array_size() in vmalloc()

2018-06-12 16:19:22 -07:00

sm_ftl.c

treewide: kzalloc() -> kcalloc()

2018-06-12 16:19:22 -07:00

sm_ftl.h

mtd: Stop assuming mtd_erase() is asynchronous

2018-03-15 18:21:07 +01:00

ssfdc.c

treewide: kmalloc() -> kmalloc_array()

2018-06-12 16:19:22 -07:00