Subject: kernel: disable cfi cmdset 0002 erase suspend
From: Felix Fietkau <[email-masked]>

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 <[email-masked]>
---
 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
@@ -909,7 +909,7 @@ 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;