linux_dsm_epyc7002/drivers/mtd/nand
Masahiro Yamada cf51e4b9c3 mtd: rawnand: denali: fix a race condition when DMA is kicked
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>
2018-09-15 10:05:26 +02:00
..
onenand mtd: onenand: use mtd_device_register() where applicable 2018-07-19 23:14:12 +02:00
raw mtd: rawnand: denali: fix a race condition when DMA is kicked 2018-09-15 10:05:26 +02:00
spi mtd: spinand: macronix: Add support for MX35LF2GE4AB 2018-07-18 09:24:12 +02:00
bbt.c mtd: nand: Add core infrastructure to deal with NAND devices 2018-02-16 10:10:53 +01:00
core.c mtd: nand: Fix nanddev_mtd_erase() 2018-04-22 19:59:29 +02:00
Kconfig mtd: nand: Add core infrastructure to support SPI NANDs 2018-07-18 09:24:10 +02:00
Makefile mtd: nand: Add core infrastructure to support SPI NANDs 2018-07-18 09:24:10 +02:00