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authorNicolas Pitre <nico@cam.org>2005-11-23 22:07:56 +0000
committerThomas Gleixner <tglx@mtd.linutronix.de>2005-11-29 19:36:35 +0100
commit8bc3b3804a6123e634be26359558aa998102506a (patch)
tree87141f0f991a81f6e18c2c5b7a7c7cc62ce1fd7f /drivers/mtd
parent7ac571f8d0f843fb818f7c70ec77784545e91bc4 (diff)
downloadop-kernel-dev-8bc3b3804a6123e634be26359558aa998102506a.zip
op-kernel-dev-8bc3b3804a6123e634be26359558aa998102506a.tar.gz
[MTD] cfi_cmdset_0001: relax locking rules for multi hardware partition support
Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/chips/cfi_cmdset_0001.c10
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c
index 143f01a..69c0494 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 1.185 2005/11/07 11:14:22 gleixner Exp $
+ * $Id: cfi_cmdset_0001.c,v 1.186 2005/11/23 22:07:52 nico Exp $
*
*
* 10/10/2000 Nicolas Pitre <nico@cam.org>
@@ -644,9 +644,8 @@ static int get_chip(struct map_info *map, struct flchip *chip, unsigned long adr
*
* - contension arbitration is handled in the owner's context.
*
- * The 'shared' struct can be read when its lock is taken.
- * However any writes to it can only be made when the current
- * owner's lock is also held.
+ * The 'shared' struct can be read and/or written only when
+ * its lock is taken.
*/
struct flchip_shared *shared = chip->priv;
struct flchip *contender;
@@ -675,14 +674,13 @@ static int get_chip(struct map_info *map, struct flchip *chip, unsigned long adr
}
timeo = jiffies + HZ;
spin_lock(&shared->lock);
+ spin_unlock(contender->mutex);
}
/* We now own it */
shared->writing = chip;
if (mode == FL_ERASING)
shared->erasing = chip;
- if (contender && contender != chip)
- spin_unlock(contender->mutex);
spin_unlock(&shared->lock);
}
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