diff options
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/scsi.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c index d8afec8317c..fb86479ffd4 100644 --- a/drivers/scsi/scsi.c +++ b/drivers/scsi/scsi.c @@ -320,13 +320,14 @@ void __scsi_put_command(struct Scsi_Host *shost, struct scsi_cmnd *cmd, { unsigned long flags; - /* changing locks here, don't need to restore the irq state */ - spin_lock_irqsave(&shost->free_list_lock, flags); if (unlikely(list_empty(&shost->free_list))) { - list_add(&cmd->list, &shost->free_list); - cmd = NULL; + spin_lock_irqsave(&shost->free_list_lock, flags); + if (list_empty(&shost->free_list)) { + list_add(&cmd->list, &shost->free_list); + cmd = NULL; + } + spin_unlock_irqrestore(&shost->free_list_lock, flags); } - spin_unlock_irqrestore(&shost->free_list_lock, flags); if (likely(cmd != NULL)) scsi_pool_free_command(shost->cmd_pool, cmd); |