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authorJohn Crispin <john@phrozen.org>2016-12-25 20:11:34 +0100
committerJohn Crispin <john@phrozen.org>2017-08-05 08:46:36 +0200
commit74d00a8c3849c1340efd713eb94b786e304c201f (patch)
treede481743de61c34da96ab5f9dba3af3edcfb8260 /target/linux/generic/pending-4.9/460-mtd-cfi_cmdset_0002-no-erase_suspend.patch
parentde350550ef648d9728351b986b0516fa29465c45 (diff)
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kernel: split patches folder up into backport, pending and hack folders
* properly format/comment all patches * merge debloat patches * merge Kconfig patches * merge swconfig patches * merge hotplug patches * drop 200-fix_localversion.patch - upstream * drop 222-arm_zimage_none.patch - unused * drop 252-mv_cesa_depends.patch - no longer required * drop 410-mtd-move-forward-declaration-of-struct-mtd_info.patch - unused * drop 661-fq_codel_keep_dropped_stats.patch - outdated * drop 702-phy_add_aneg_done_function.patch - upstream * drop 840-rtc7301.patch - unused * drop 841-rtc_pt7c4338.patch - upstream * drop 921-use_preinit_as_init.patch - unused * drop spio-gpio-old and gpio-mmc - unused Signed-off-by: John Crispin <john@phrozen.org>
Diffstat (limited to 'target/linux/generic/pending-4.9/460-mtd-cfi_cmdset_0002-no-erase_suspend.patch')
-rw-r--r--target/linux/generic/pending-4.9/460-mtd-cfi_cmdset_0002-no-erase_suspend.patch30
1 files changed, 30 insertions, 0 deletions
diff --git a/target/linux/generic/pending-4.9/460-mtd-cfi_cmdset_0002-no-erase_suspend.patch b/target/linux/generic/pending-4.9/460-mtd-cfi_cmdset_0002-no-erase_suspend.patch
new file mode 100644
index 0000000000..3cabff37f1
--- /dev/null
+++ b/target/linux/generic/pending-4.9/460-mtd-cfi_cmdset_0002-no-erase_suspend.patch
@@ -0,0 +1,30 @@
+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(-)
+
+diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c
+index 9dca881bb378..ea4db1917334 100644
+--- a/drivers/mtd/chips/cfi_cmdset_0002.c
++++ b/drivers/mtd/chips/cfi_cmdset_0002.c
+@@ -807,7 +807,7 @@ static int get_chip(struct map_info *map, struct flchip *chip, unsigned long adr
+ 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;
+--
+2.11.0
+