diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2012-03-05 11:24:42 -0800 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2012-03-06 15:16:14 -0500 |
| commit | bffc66ce2210b149fd171eccad2aef9802c0b35d (patch) | |
| tree | 472f5307310c9454556988a28c54b82134a14250 /drivers/net/wireless/iwlwifi/iwl-trans-pcie-int.h | |
| parent | c977a33d84fb3d706faa0b62f9671f49b16dde34 (diff) | |
iwlwifi: move queue functions to PCI-E
iwl_queue_inc_wrap/iwl_queue_dec_wrap aren't
shared functions, they are PCI-E specific,
so move them into the appropriate header.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/iwlwifi/iwl-trans-pcie-int.h')
| -rw-r--r-- | drivers/net/wireless/iwlwifi/iwl-trans-pcie-int.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/net/wireless/iwlwifi/iwl-trans-pcie-int.h b/drivers/net/wireless/iwlwifi/iwl-trans-pcie-int.h index 632d4099900e..44952c371d33 100644 --- a/drivers/net/wireless/iwlwifi/iwl-trans-pcie-int.h +++ b/drivers/net/wireless/iwlwifi/iwl-trans-pcie-int.h @@ -115,6 +115,26 @@ struct iwl_dma_ptr { size_t size; }; +/** + * iwl_queue_inc_wrap - increment queue index, wrap back to beginning + * @index -- current index + * @n_bd -- total number of entries in queue (must be power of 2) + */ +static inline int iwl_queue_inc_wrap(int index, int n_bd) +{ + return ++index & (n_bd - 1); +} + +/** + * iwl_queue_dec_wrap - decrement queue index, wrap back to end + * @index -- current index + * @n_bd -- total number of entries in queue (must be power of 2) + */ +static inline int iwl_queue_dec_wrap(int index, int n_bd) +{ + return --index & (n_bd - 1); +} + /* * This queue number is required for proper operation * because the ucode will stop/start the scheduler as |