diff options
| author | Todd Poynor <tpoynor@mvista.com> | 2005-03-29 23:06:40 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@mtd.linutronix.de> | 2005-05-23 13:05:37 +0200 |
| commit | 9a6e73ec4906bdf44ccfaaf8db56693b146595c0 (patch) | |
| tree | affdbc2dbf1cf7058331e1bdbf70d1b6c8384ce8 /drivers/mtd | |
| parent | 1a78ff6b4114cfb0f734b7df217759315d692683 (diff) | |
[MTD] cfi_cmdset_0001: Skip delay if Instant Block Locking is set
Skip jiffy delay after each block lock/unlock for Intel CFI flash
with the "Instant Individual Block Locking" feature bit set.
Signed-off-by: Todd Poynor <tpoynor@mvista.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/chips/cfi_cmdset_0001.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c index 100a00063f87..51675bb2f830 100644 --- a/drivers/mtd/chips/cfi_cmdset_0001.c +++ b/drivers/mtd/chips/cfi_cmdset_0001.c @@ -4,7 +4,7 @@ * * (C) 2000 Red Hat. GPL'd * - * $Id: cfi_cmdset_0001.c,v 1.171 2005/03/19 22:39:49 gleixner Exp $ + * $Id: cfi_cmdset_0001.c,v 1.172 2005/03/29 22:06:37 tpoynor Exp $ * * * 10/10/2000 Nicolas Pitre <nico@cam.org> @@ -1823,6 +1823,7 @@ static int __xipram do_xxlock_oneblock(struct map_info *map, struct flchip *chip unsigned long adr, int len, void *thunk) { struct cfi_private *cfi = map->fldrv_priv; + struct cfi_pri_intelext *extp = cfi->cmdset_priv; map_word status, status_OK; unsigned long timeo = jiffies + HZ; int ret; @@ -1852,9 +1853,16 @@ static int __xipram do_xxlock_oneblock(struct map_info *map, struct flchip *chip } else BUG(); - spin_unlock(chip->mutex); - UDELAY(map, chip, adr, 1000000/HZ); - spin_lock(chip->mutex); + /* + * If Instant Individual Block Locking supported then no need + * to delay. + */ + + if (!extp || !(extp->FeatureSupport & (1 << 5))) { + spin_unlock(chip->mutex); + UDELAY(map, chip, adr, 1000000/HZ); + spin_lock(chip->mutex); + } /* FIXME. Use a timer to check this, and return immediately. */ /* Once the state machine's known to be working I'll do that */ |