From bffc66ce2210b149fd171eccad2aef9802c0b35d Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Mon, 5 Mar 2012 11:24:42 -0800 Subject: 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 Signed-off-by: Wey-Yi Guy Signed-off-by: John W. Linville --- drivers/net/wireless/iwlwifi/iwl-trans-pcie-int.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'drivers/net/wireless/iwlwifi/iwl-trans-pcie-int.h') 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 -- cgit v1.2.3