From: "Anders Grafström" <anders.grafstrom@netinsight.net>
To: David Woodhouse <dwmw2@infradead.org>,
Linux-MTD Mailing List <linux-mtd@lists.infradead.org>
Subject: [PATCH] mtd: cfi_cmdset_0001: Fix max timeout for locking operations
Date: Fri, 26 Feb 2010 21:54:19 +0100 [thread overview]
Message-ID: <4B8834FB.2070004@netinsight.net> (raw)
The max timeout is currently too short for some flash chips.
This patch increases it to 10 seconds. The typical timeout
remains unchanged (the tick period, 1000000/HZ).
Specification change #11 in '5 Volt Intel StrataFlash Memory Specification Update'
(297848-15) specifies an increase of Clear Block Lock-Bit Time Max to 7 sec.
This is contradicted by the table in Specification Change #8 which says .70 sec
but a 10 sec timeout doesn't hurt so play it safe.
Signed-off-by: Anders Grafström <anders.grafstrom@netinsight.net>
---
drivers/mtd/chips/cfi_cmdset_0001.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c
index 9253043..83e4ae2 100644
--- a/drivers/mtd/chips/cfi_cmdset_0001.c
+++ b/drivers/mtd/chips/cfi_cmdset_0001.c
@@ -2077,7 +2077,7 @@ static int __xipram do_xxlock_oneblock(struct map_info *map, struct flchip *chip
*/
udelay = (!extp || !(extp->FeatureSupport & (1 << 5))) ? 1000000/HZ : 0;
- ret = WAIT_TIMEOUT(map, chip, adr, udelay, udelay * 100);
+ ret = WAIT_TIMEOUT(map, chip, adr, udelay, udelay * HZ * 10);
if (ret) {
map_write(map, CMD(0x70), adr);
chip->state = FL_STATUS;
--
1.6.6.1
next reply other threads:[~2010-02-26 20:54 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-26 20:54 Anders Grafström [this message]
2010-04-01 12:14 ` [PATCH] mtd: cfi_cmdset_0001: Fix max timeout for locking operations Artem Bityutskiy
2010-05-13 23:06 ` David Woodhouse
2010-05-17 17:26 ` Anders Grafström
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