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Koen Vandeputte d1de305d4f ath79: ar934x-nand: fix broken nand on kernel 5.10 
Booting current 5.10.x testing kernel shows this:

[    0.335781] nand: device found, Manufacturer ID: 0xec, Chip ID: 0xf1
[    0.342280] nand: Samsung NAND 128MiB 3,3V 8-bit
[    0.346982] nand: 128 MiB, SLC, erase size: 128 KiB, page size: 2048,
OOB size: 64
[    0.354703] ar934x-nand 1b800200.nand: unknown ECC mode 2
[    0.360193] ar934x-nand 1b800200.nand: nand_scan failed, err:-22
[    0.366341] ar934x-nand: probe of 1b800200.nand failed with error -22

...

[    1.089264] /dev/root: Can't open blockdev
[    1.093482] VFS: Cannot open root device "(null)" or
unknown-block(0,0): error -6
[    1.101077] Please append a correct "root=" boot option; here are the
available partitions:
[    1.109555] 1f00              64 mtdblock0
[    1.109559]  (driver?)
[    1.116199] 1f01              48 mtdblock1
[    1.116202]  (driver?)
[    1.122841] 1f02               4 mtdblock2
[    1.122844]  (driver?)
[    1.129493] 1f03               4 mtdblock3
[    1.129497]  (driver?)
[    1.136138] 1f04               4 mtdblock4
[    1.136142]  (driver?)
[    1.142787] Kernel panic - not syncing: VFS: Unable to mount root fs
on unknown-block(0,0)
[    1.151168] Rebooting in 1 seconds..

The issue is caused by a wrong check for ECC engine type
on newer kernels.

Fix this.

Bootlog after:

[    0.335689] nand: device found, Manufacturer ID: 0xec, Chip ID: 0xf1
[    0.342192] nand: Samsung NAND 128MiB 3,3V 8-bit
[    0.346884] nand: 128 MiB, SLC, erase size: 128 KiB, page size: 2048,
OOB size: 64
[    0.354611] Scanning device for bad blocks
[    0.364924] random: fast init done
[    0.496641] 3 fixed-partitions partitions found on MTD device
ar934x-nand
[    0.503545] Creating 3 MTD partitions on "ar934x-nand":
[    0.508865] 0x000000000000-0x000000040000 : "booter"
[    0.515133] 0x000000040000-0x000000400000 : "kernel"
[    0.523265] 0x000000400000-0x000008000000 : "ubi"

Fixes: fb64e2c30f ("ath79: ar934x-nand: add kernel 5.10 compatibility")
Signed-off-by: Koen Vandeputte <koen.vandeputte@citymesh.com>
2021-04-07 23:10:36 +08:00
..
apm821xx kernel: bump 5.10 to 5.10.24 2021-03-24 23:12:50 +08:00
arc770 target: use SPDX license identifiers on scripts 2021-02-11 12:08:24 +08:00
archs38 archs38: Add CONFIG_HZ=100 2021-03-20 11:51:01 +08:00
armvirt armvirt: add 5.10 testing kernel 2021-04-04 12:13:35 +08:00
at91 treewide: make AddDepends/usb-serial selective 2021-03-07 11:50:15 +08:00
ath25 target: use SPDX license identifiers on Makefiles 2021-02-11 12:05:39 +08:00
ath79 ath79: ar934x-nand: fix broken nand on kernel 5.10 2021-04-07 23:10:36 +08:00
bcm27xx kernel: bump 5.4 to 5.4.108 2021-03-28 11:22:56 +08:00
bcm47xx bcm47xx: make WGT634U NVRAM patch apply again 2021-03-13 12:05:27 +08:00
bcm53xx bcm53xx: use upstream Linksys EA9500 fixes 2021-04-01 23:18:58 +08:00
bcm63xx kernel: bump 5.10 to 5.10.26 2021-03-26 20:01:50 +08:00
bcm4908 bcm4908: rename bootfs dummy file to the 1-openwrt 2021-04-06 20:50:45 +08:00
bmips kernel: bump 5.10 to 5.10.27 2021-04-04 12:23:06 +08:00
gemini kernel: Move CONFIG_USERIO to generic config 2021-03-28 11:17:21 +08:00
generic generic/5.10: support mtd-mac-address-ascii 2021-04-04 12:25:01 +08:00
imx6 kernel: move some disabled symbols to generic 2021-03-20 11:19:57 +08:00
ipq40xx kernel: move some disabled symbols to generic 2021-03-20 11:19:57 +08:00
ipq806x kernel: bump 5.4 to 5.4.109 2021-04-04 12:22:41 +08:00
ipq807x kernel: move some disabled symbols to generic 2021-03-20 11:19:57 +08:00
kirkwood kernel: backport 5.13 mtd partitioning changes 2021-03-29 23:21:56 +08:00
lantiq lantiq: add basic support for AVM FRITZ!Box 3390 2021-04-04 12:17:44 +08:00
layerscape kernel: bump 5.4 to 5.4.109 2021-04-04 12:22:41 +08:00
malta kernel: Move CONFIG_USERIO to generic config 2021-03-28 11:17:21 +08:00
mediatek kernel: bump 5.4 to 5.4.109 2021-04-04 12:22:41 +08:00
mpc85xx kernel: bump 5.10 to 5.10.20 2021-03-06 12:21:43 +08:00
mvebu kernel: backport 5.13 mtd partitioning changes 2021-03-29 23:21:56 +08:00
mxs target: use SPDX license identifiers on scripts 2021-02-11 12:08:24 +08:00
octeon kernel: move some disabled symbols to generic 2021-03-20 11:19:57 +08:00
octeontx kernel: move some disabled symbols to generic 2021-03-20 11:19:57 +08:00
omap kernel: Move CONFIG_USERIO to generic config 2021-03-28 11:17:21 +08:00
oxnas kernel: Move CONFIG_USERIO to generic config 2021-03-28 11:17:21 +08:00
pistachio kernel: add pending mtd patches adding NVMEM support 2021-03-13 12:04:54 +08:00
ramips kernel: bump 5.10 to 5.10.27 2021-04-04 12:23:06 +08:00
realtek realtek: rename partitions in Netgear DTSI 2021-04-04 12:20:18 +08:00
rockchip Revert "rockchip: backport upstream usbdrd3 patches" 2021-04-06 19:56:35 +08:00
sunxi sunxi: enable wifi module on Pine64 boards 2021-03-30 23:13:04 +08:00
tegra kernel: Move CONFIG_USERIO to generic config 2021-03-28 11:17:21 +08:00
uml target: use SPDX license identifiers on Makefiles 2021-02-11 12:05:39 +08:00
x86 kernel: Move CONFIG_USERIO to generic config 2021-03-28 11:17:21 +08:00
zynq kernel: Move CONFIG_USERIO to generic config 2021-03-28 11:17:21 +08:00
Makefile target: use SPDX license identifiers on Makefiles 2021-02-11 12:05:39 +08:00