The patch titled hpilo: add locking comment has been removed from the -mm tree. Its filename was hpilo-add-locking-comment.patch This patch was dropped because it was merged into mainline or a subsystem tree The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: hpilo: add locking comment From: David Altobelli <david.altobelli@xxxxxx> Add explanation about lock nesting and purpose of each lock in hpilo. Signed-off-by: David Altobelli <david.altobelli@xxxxxx> Cc: Greg KH <greg@xxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- drivers/misc/hpilo.h | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff -puN drivers/misc/hpilo.h~hpilo-add-locking-comment drivers/misc/hpilo.h --- a/drivers/misc/hpilo.h~hpilo-add-locking-comment +++ a/drivers/misc/hpilo.h @@ -44,9 +44,20 @@ struct ilo_hwinfo { struct pci_dev *ilo_dev; + /* + * open_lock serializes ccb_cnt during open and close + * [ irq disabled ] + * -> alloc_lock used when adding/removing/searching ccb_alloc, + * which represents all ccbs open on the device + * --> fifo_lock controls access to fifo queues shared with hw + * + * Locks must be taken in this order, but open_lock and alloc_lock + * are optional, they do not need to be held in order to take a + * lower level lock. + */ + spinlock_t open_lock; spinlock_t alloc_lock; spinlock_t fifo_lock; - spinlock_t open_lock; struct cdev cdev; }; _ Patches currently in -mm which might be from david.altobelli@xxxxxx are linux-next.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html