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e93a977367
linux/drivers/mtd
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Luis Alberto Herrera e93a977367 mtd: revert "spi-nor: intel: provide a range for poll_timout" 
This change reverts aba3a882a1: "mtd: spi-nor: intel: provide a range
for poll_timout". That change introduces a performance regression when
reading sequentially from flash. Logging calls to intel_spi_read without
this change we get:

Start MTD read
[   20.045527] intel_spi_read(from=1800000, len=400000)
[   20.045527] intel_spi_read(from=1800000, len=400000)
[  282.199274] intel_spi_read(from=1c00000, len=400000)
[  282.199274] intel_spi_read(from=1c00000, len=400000)
[  544.351528] intel_spi_read(from=2000000, len=400000)
[  544.351528] intel_spi_read(from=2000000, len=400000)
End MTD read

With this change:

Start MTD read
[   21.942922] intel_spi_read(from=1c00000, len=400000)
[   21.942922] intel_spi_read(from=1c00000, len=400000)
[   23.784058] intel_spi_read(from=2000000, len=400000)
[   23.784058] intel_spi_read(from=2000000, len=400000)
[   25.625006] intel_spi_read(from=2400000, len=400000)
[   25.625006] intel_spi_read(from=2400000, len=400000)
End MTD read

Signed-off-by: Luis Alberto Herrera <luisalberto@google.com>
Tested-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Link: https://lore.kernel.org/r/20200610224652.64336-1-luisalberto@google.com
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
2020-07-28 11:35:27 +03:00
..
chips mtd: cfi_cmdset_0001: Support the absence of protection registers 2020-04-30 23:42:57 +05:30
devices lib/bch: Allow easy bit swapping 2020-05-24 20:48:11 +02:00
hyperbus mtd: hyperbus: move direct mapping setup to AM654 HBMC driver 2020-03-03 10:13:11 +05:30
lpddr mtd: Convert fallthrough comments into statements 2020-03-30 10:14:54 +02:00
maps mtd: physmap_of_gemini: remove defined but not used symbol 'syscon_match' 2020-06-05 10:15:44 +02:00
nand Raw NAND core changes: 2020-06-01 19:50:58 +02:00
parsers mtd: parser: cmdline: Support MTD names containing one or more colons 2020-06-05 10:16:14 +02:00
spi-nor mtd: revert "spi-nor: intel: provide a range for poll_timout" 2020-07-28 11:35:27 +03:00
tests treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 326 2019-06-05 17:37:06 +02:00
ubi This pull request contains a single change for UBI: 2020-06-10 13:24:40 -07:00
ftl.c
inftlcore.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
inftlmount.c mtd: fix spelling mistake "BlockMultiplerBits" -> "BlockMultiplierBits" 2020-03-11 14:49:30 +01:00
Kconfig mtd: Support kmsg dumper based on pstore/blk 2020-05-31 19:49:01 -07:00
Makefile mtd: Support kmsg dumper based on pstore/blk 2020-05-31 19:49:01 -07:00
mtd_blkdevs.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 102 2019-05-24 17:39:00 +02:00
mtdblock_ro.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 102 2019-05-24 17:39:00 +02:00
mtdblock.c mtd: clear cache_state to avoid writing to bad blocks repeatedly 2020-06-05 10:16:14 +02:00
mtdchar.c mtd: implement proper partition handling 2020-03-11 14:49:30 +01:00
mtdconcat.c mtd: concat: Fix a comment referring to an unknown symbol 2020-01-27 17:45:31 +01:00
mtdcore.c MTD core changes: 2020-06-10 13:15:17 -07:00
mtdcore.h mtd: Provide fs_context-aware mount_mtd() replacement 2019-09-05 14:34:23 -04:00
mtdoops.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 336 2019-06-05 17:37:07 +02:00
mtdpart.c mtd: Add support for emulated SLC mode on MLC NANDs 2020-05-11 09:51:41 +02:00
mtdpstore.c mtd: Support kmsg dumper based on pstore/blk 2020-05-31 19:49:01 -07:00
mtdsuper.c mtd: Kill mount_mtd() 2019-09-05 14:34:26 -04:00
mtdswap.c mtd: no need to check return value of debugfs_create functions 2019-11-14 10:57:38 +01:00
nftlcore.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
nftlmount.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
rfd_ftl.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
sm_ftl.c mtd: sm_ftl: fix NULL pointer warning 2020-01-09 20:09:55 +01:00
sm_ftl.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
ssfdc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00