Sascha Hauer 0af674e7a7 mtd: rawnand: gpmi: Fix setting busy timeout setting ... commit 06781a5026 upstream. The DEVICE_BUSY_TIMEOUT value is described in the Reference Manual as: | Timeout waiting for NAND Ready/Busy or ATA IRQ. Used in WAIT_FOR_READY | mode. This value is the number of GPMI_CLK cycles multiplied by 4096. So instead of multiplying the value in cycles with 4096, we have to divide it by that value. Use DIV_ROUND_UP to make sure we are on the safe side, especially when the calculated value in cycles is smaller than 4096 as typically the case. This bug likely never triggered because any timeout != 0 usually will do. In my case the busy timeout in cycles was originally calculated as 2408, which multiplied with 4096 is 0x968000. The lower 16 bits were taken for the 16 bit wide register field, so the register value was 0x8000. With 2970bf5a32 ("mtd: rawnand: gpmi: fix controller timings setting") however the value in cycles became 2384, which multiplied with 4096 is 0x950000. The lower 16 bit are 0x0 now resulting in an intermediate timeout when reading from NAND. Fixes: b120612206 ("mtd: rawnand: gpmi: use core timings instead of an empirical derivation") Cc: stable@vger.kernel.org Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20220614083138.3455683-1-s.hauer@pengutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-06-29 09:03:20 +02:00
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chips	mtd: cfi_cmdset_0002: Use chip_ready() for write on S29GL064N	2022-06-09 10:23:25 +02:00
devices	mtd: mchp48l640: Add SPI ID table	2022-04-08 14:23:29 +02:00
hyperbus	mtd: hyperbus: rpc-if: fix bug in rpcif_hb_remove	2022-01-27 11:03:15 +01:00
lpddr	…
maps	mtd: fixup CFI on ixp4xx	2022-01-20 09:13:16 +01:00
nand	mtd: rawnand: gpmi: Fix setting busy timeout setting	2022-06-29 09:03:20 +02:00
parsers	mtd: parsers: qcom: Fix missing free for pparts in cleanup	2022-02-23 12:03:16 +01:00
spi-nor	mtd: spi-nor: core: Check written SR value in spi_nor_write_16bit_sr_and_check()	2022-06-09 10:22:51 +02:00
tests	…
ubi	ubi: ubi_create_volume: Fix use-after-free when volume creation failed	2022-06-14 18:36:10 +02:00
Kconfig	…
Makefile	…
ftl.c	…
inftlcore.c	…
inftlmount.c	…
mtd_blkdevs.c	…
mtdblock.c	mtdblock: warn if opened on NAND	2022-06-09 10:22:49 +02:00
mtdblock_ro.c	…
mtdchar.c	…
mtdconcat.c	…
mtdcore.c	mtd: core: Fix a conflict between MTD and NVMEM on wp-gpios property	2022-03-02 11:48:07 +01:00
mtdcore.h	…
mtdoops.c	…
mtdpart.c	mtd: Fixed breaking list in __mtd_del_partition.	2022-01-27 11:02:48 +01:00
mtdpstore.c	…
mtdsuper.c	…
mtdswap.c	…
nftlcore.c	…
nftlmount.c	…
rfd_ftl.c	…
sm_ftl.c	…
sm_ftl.h	…
ssfdc.c	…