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| author | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2007-02-04 20:57:38 +0100 |
|---|---|---|
| committer | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2007-04-30 00:00:27 +0200 |
| commit | 3d269cb50c81d3bb01d5856d5157d4db346bab4b (patch) | |
| tree | 469febbd344f4c9363ed1d1a815b95b4cecf62ae /drivers/ieee1394/sbp2.c | |
| parent | ieee1394: sbp2: optimize DMA direction of s/g tables (diff) | |
| download | linux-3d269cb50c81d3bb01d5856d5157d4db346bab4b.tar.xz linux-3d269cb50c81d3bb01d5856d5157d4db346bab4b.zip | |
ieee1394: sbp2: move some memory allocations into non-atomic context
When the command ORB pool is created, the ORB list won't be accessed
concurrently. Therefore we don't have to take the spinlock there.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Diffstat (limited to 'drivers/ieee1394/sbp2.c')
| -rw-r--r-- | drivers/ieee1394/sbp2.c | 20 |
1 files changed, 5 insertions, 15 deletions
diff --git a/drivers/ieee1394/sbp2.c b/drivers/ieee1394/sbp2.c index cae3816e68db..8c471ca11115 100644 --- a/drivers/ieee1394/sbp2.c +++ b/drivers/ieee1394/sbp2.c @@ -469,19 +469,13 @@ static void sbp2util_write_doorbell(struct work_struct *work) static int sbp2util_create_command_orb_pool(struct sbp2_lu *lu) { struct sbp2_fwhost_info *hi = lu->hi; - int i; - unsigned long flags, orbs; struct sbp2_command_info *cmd; + int i, orbs = sbp2_serialize_io ? 2 : SBP2_MAX_CMDS; - orbs = sbp2_serialize_io ? 2 : SBP2_MAX_CMDS; - - spin_lock_irqsave(&lu->cmd_orb_lock, flags); for (i = 0; i < orbs; i++) { - cmd = kzalloc(sizeof(*cmd), GFP_ATOMIC); - if (!cmd) { - spin_unlock_irqrestore(&lu->cmd_orb_lock, flags); + cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); + if (!cmd) return -ENOMEM; - } cmd->command_orb_dma = dma_map_single(hi->host->device.parent, &cmd->command_orb, sizeof(struct sbp2_command_orb), @@ -493,7 +487,6 @@ static int sbp2util_create_command_orb_pool(struct sbp2_lu *lu) INIT_LIST_HEAD(&cmd->list); list_add_tail(&cmd->list, &lu->cmd_orb_completed); } - spin_unlock_irqrestore(&lu->cmd_orb_lock, flags); return 0; } @@ -870,11 +863,8 @@ static int sbp2_start_device(struct sbp2_lu *lu) if (!lu->login_orb) goto alloc_fail; - if (sbp2util_create_command_orb_pool(lu)) { - SBP2_ERR("sbp2util_create_command_orb_pool failed!"); - sbp2_remove_device(lu); - return -ENOMEM; - } + if (sbp2util_create_command_orb_pool(lu)) + goto alloc_fail; /* Wait a second before trying to log in. Previously logged in * initiators need a chance to reconnect. */ |