diff options
Diffstat (limited to 'target/linux/generic/pending-4.14/460-mtd-cfi_cmdset_0002-no-erase_suspend.patch')
| -rw-r--r-- | target/linux/generic/pending-4.14/460-mtd-cfi_cmdset_0002-no-erase_suspend.patch | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/target/linux/generic/pending-4.14/460-mtd-cfi_cmdset_0002-no-erase_suspend.patch b/target/linux/generic/pending-4.14/460-mtd-cfi_cmdset_0002-no-erase_suspend.patch new file mode 100644 index 0000000000..41f9d31cb0 --- /dev/null +++ b/target/linux/generic/pending-4.14/460-mtd-cfi_cmdset_0002-no-erase_suspend.patch @@ -0,0 +1,25 @@ +From: Felix Fietkau <nbd@nbd.name> +Subject: kernel: disable cfi cmdset 0002 erase suspend + +on some platforms, erase suspend leads to data corruption and lockups when write +ops collide with erase ops. this has been observed on the buffalo wzr-hp-g300nh. +rather than play whack-a-mole with a hard to reproduce issue on a variety of devices, +simply disable erase suspend, as it will usually not produce any useful gain on +the small filesystems used on embedded hardware. + +Signed-off-by: Felix Fietkau <nbd@nbd.name> +--- + drivers/mtd/chips/cfi_cmdset_0002.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +--- a/drivers/mtd/chips/cfi_cmdset_0002.c ++++ b/drivers/mtd/chips/cfi_cmdset_0002.c +@@ -811,7 +811,7 @@ static int get_chip(struct map_info *map + return 0; + + case FL_ERASING: +- if (!cfip || !(cfip->EraseSuspend & (0x1|0x2)) || ++ if (1 /* no suspend */ || !cfip || !(cfip->EraseSuspend & (0x1|0x2)) || + !(mode == FL_READY || mode == FL_POINT || + (mode == FL_WRITING && (cfip->EraseSuspend & 0x2)))) + goto sleep; |