From 431469259df6ebc8e022b268bbb2d9bc5562f920 Mon Sep 17 00:00:00 2001 From: Sara Sharon Date: Mon, 14 Mar 2016 13:11:47 +0200 Subject: [PATCH] iwlwifi: pcie: fix global table size My patch resized the pool size, but neglected to resize the global table, which is obviously wrong since the global table maps the pool's rxb to vid one to one. This results in a panic in 9000 devices. Add a build bug to avoid such a case in the future. Fixes: 7b5424361ec9 ("iwlwifi: pcie: fine tune number of rxbs") Reported-by: Haim Dreyfuss Signed-off-by: Sara Sharon Signed-off-by: Emmanuel Grumbach --- drivers/net/wireless/intel/iwlwifi/pcie/internal.h | 2 +- drivers/net/wireless/intel/iwlwifi/pcie/rx.c | 2 ++ 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/internal.h b/drivers/net/wireless/intel/iwlwifi/pcie/internal.h index dadafbd..34bf7ce 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/internal.h +++ b/drivers/net/wireless/intel/iwlwifi/pcie/internal.h @@ -348,7 +348,7 @@ struct iwl_tso_hdr_page { struct iwl_trans_pcie { struct iwl_rxq *rxq; struct iwl_rx_mem_buffer rx_pool[RX_POOL_SIZE]; - struct iwl_rx_mem_buffer *global_table[MQ_RX_TABLE_SIZE]; + struct iwl_rx_mem_buffer *global_table[RX_POOL_SIZE]; struct iwl_rb_allocator rba; struct iwl_trans *trans; struct iwl_drv *drv; diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c index 4be3c35..e379dba 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c @@ -908,6 +908,8 @@ int iwl_pcie_rx_init(struct iwl_trans *trans) allocator_pool_size = trans->num_rx_queues * (RX_CLAIM_REQ_ALLOC - RX_POST_REQ_ALLOC); num_alloc = queue_size + allocator_pool_size; + BUILD_BUG_ON(ARRAY_SIZE(trans_pcie->global_table) != + ARRAY_SIZE(trans_pcie->rx_pool)); for (i = 0; i < num_alloc; i++) { struct iwl_rx_mem_buffer *rxb = &trans_pcie->rx_pool[i]; -- 2.7.4