iwlwifi: allocate Tx cmd pool per device
Different transports will have different needs: New tranports
need headroom for their own use before the Tx cmd. So allocate
the Tx cmd pool in the transport and give it a unique name
based on dev_name.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/drivers/net/wireless/iwlwifi/pcie/trans.c b/drivers/net/wireless/iwlwifi/pcie/trans.c
index 0f59e1f..1eabb83 100644
--- a/drivers/net/wireless/iwlwifi/pcie/trans.c
+++ b/drivers/net/wireless/iwlwifi/pcie/trans.c
@@ -1528,6 +1528,7 @@
iounmap(trans_pcie->hw_base);
pci_release_regions(trans_pcie->pci_dev);
pci_disable_device(trans_pcie->pci_dev);
+ kmem_cache_destroy(trans->dev_cmd_pool);
kfree(trans);
}
@@ -2042,6 +2043,7 @@
{
struct iwl_trans_pcie *trans_pcie;
struct iwl_trans *trans;
+ char cmd_pool_name[100];
u16 pci_cmd;
int err;
@@ -2138,8 +2140,25 @@
init_waitqueue_head(&trans->wait_command_queue);
spin_lock_init(&trans->reg_lock);
+ snprintf(cmd_pool_name, sizeof(cmd_pool_name), "iwl_cmd_pool:%s",
+ dev_name(trans->dev));
+
+ trans->dev_cmd_headroom = 0;
+ trans->dev_cmd_pool =
+ kmem_cache_create(cmd_pool_name,
+ sizeof(struct iwl_device_cmd)
+ + trans->dev_cmd_headroom,
+ sizeof(void *),
+ SLAB_HWCACHE_ALIGN,
+ NULL);
+
+ if (!trans->dev_cmd_pool)
+ goto out_pci_disable_msi;
+
return trans;
+out_pci_disable_msi:
+ pci_disable_msi(pdev);
out_pci_release_regions:
pci_release_regions(pdev);
out_pci_disable_device: