From 3827cb59b3b8ce4b1687385d35034dadcd90d7ce Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Fri, 28 Jan 2022 15:34:29 +0200 Subject: [PATCH] iwlwifi: avoid void pointer arithmetic Avoid void pointer arithmetic since it's technically undefined and causes warnings in some places that use our code. Signed-off-by: Johannes Berg Signed-off-by: Luca Coelho Link: https://lore.kernel.org/r/iwlwifi.20220128153014.e349104ecd94.Iadc937f475158b9437becdfefb361a97e7eaa934@changeid Signed-off-by: Luca Coelho --- drivers/net/wireless/intel/iwlwifi/fw/dbg.c | 2 +- drivers/net/wireless/intel/iwlwifi/fw/paging.c | 2 +- drivers/net/wireless/intel/iwlwifi/mvm/d3.c | 2 +- drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c | 2 +- drivers/net/wireless/intel/iwlwifi/mvm/fw.c | 2 +- drivers/net/wireless/intel/iwlwifi/mvm/rx.c | 4 ++-- drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c | 4 ++-- drivers/net/wireless/intel/iwlwifi/mvm/scan.c | 2 +- drivers/net/wireless/intel/iwlwifi/pcie/internal.h | 2 +- drivers/net/wireless/intel/iwlwifi/pcie/rx.c | 2 +- drivers/net/wireless/intel/iwlwifi/pcie/trans.c | 2 +- drivers/net/wireless/intel/iwlwifi/pcie/tx.c | 2 +- drivers/net/wireless/intel/iwlwifi/queue/tx.c | 6 +++--- drivers/net/wireless/intel/iwlwifi/queue/tx.h | 2 +- 14 files changed, 18 insertions(+), 18 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/fw/dbg.c b/drivers/net/wireless/intel/iwlwifi/fw/dbg.c index 7ad9cee925da..cef3f54908fa 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/dbg.c +++ b/drivers/net/wireless/intel/iwlwifi/fw/dbg.c @@ -1992,7 +1992,7 @@ static u32 iwl_dump_ini_mem(struct iwl_fw_runtime *fwrt, struct list_head *list, u32 type = reg->type; u32 id = le32_to_cpu(reg->id); u32 num_of_ranges, i, size; - void *range; + u8 *range; /* * The higher part of the ID from 2 is irrelevant for diff --git a/drivers/net/wireless/intel/iwlwifi/fw/paging.c b/drivers/net/wireless/intel/iwlwifi/fw/paging.c index 89ec3693c6ac..945bc4160cc9 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/paging.c +++ b/drivers/net/wireless/intel/iwlwifi/fw/paging.c @@ -197,7 +197,7 @@ static int iwl_fill_paging_mem(struct iwl_fw_runtime *fwrt, } memcpy(page_address(block->fw_paging_block), - image->sec[sec_idx].data + offset, len); + (const u8 *)image->sec[sec_idx].data + offset, len); block->fw_offs = image->sec[sec_idx].offset + offset; dma_sync_single_for_device(fwrt->trans->dev, block->fw_paging_phys, diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/d3.c b/drivers/net/wireless/intel/iwlwifi/mvm/d3.c index b1dffcde4a9a..9f0e436f11f3 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/d3.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/d3.c @@ -1084,7 +1084,7 @@ static int iwl_mvm_wowlan_config_key_params(struct iwl_mvm *mvm, sizeof(struct iwl_wowlan_kek_kck_material_cmd_v2); /* skip the sta_id at the beginning */ _kek_kck_cmd = (void *) - ((u8 *)_kek_kck_cmd) + sizeof(kek_kck_cmd.sta_id); + ((u8 *)_kek_kck_cmd + sizeof(kek_kck_cmd.sta_id)); } IWL_DEBUG_WOWLAN(mvm, "setting akm %d\n", diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c index d256652a6ce3..be11161bc57d 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c @@ -1945,7 +1945,7 @@ static ssize_t iwl_dbgfs_mem_read(struct file *file, char __user *user_buf, goto out; } - ret = len - copy_to_user(user_buf, (void *)rsp->data + delta, len); + ret = len - copy_to_user(user_buf, (u8 *)rsp->data + delta, len); *ppos += ret; out: diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c index dde979b34533..fcbe7c3656ad 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c @@ -735,7 +735,7 @@ int iwl_run_init_mvm_ucode(struct iwl_mvm *mvm) mvm->nvm_data->bands[0].n_channels = 1; mvm->nvm_data->bands[0].n_bitrates = 1; mvm->nvm_data->bands[0].bitrates = - (void *)mvm->nvm_data->channels + 1; + (void *)((u8 *)mvm->nvm_data->channels + 1); mvm->nvm_data->bands[0].bitrates->hw_value = 10; } diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rx.c b/drivers/net/wireless/intel/iwlwifi/mvm/rx.c index 64446a11ef98..40d0e6bf336b 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/rx.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/rx.c @@ -83,8 +83,8 @@ static void iwl_mvm_pass_packet_to_mac80211(struct iwl_mvm *mvm, fraglen = len - hdrlen; if (fraglen) { - int offset = (void *)hdr + hdrlen - - rxb_addr(rxb) + rxb_offset(rxb); + int offset = (u8 *)hdr + hdrlen - + (u8 *)rxb_addr(rxb) + rxb_offset(rxb); skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset, fraglen, rxb->truesize); diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c b/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c index 5f3128fc1066..2c43a9989783 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c @@ -217,8 +217,8 @@ static int iwl_mvm_create_skb(struct iwl_mvm *mvm, struct sk_buff *skb, fraglen = len - headlen; if (fraglen) { - int offset = (void *)hdr + headlen + pad_len - - rxb_addr(rxb) + rxb_offset(rxb); + int offset = (u8 *)hdr + headlen + pad_len - + (u8 *)rxb_addr(rxb) + rxb_offset(rxb); skb_add_rx_frag(skb, 0, rxb_steal_page(rxb), offset, fraglen, rxb->truesize); diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c index ce7afca36bbf..0ee766c6cff8 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c @@ -2158,7 +2158,7 @@ static int iwl_mvm_scan_umac(struct iwl_mvm *mvm, struct ieee80211_vif *vif, struct iwl_scan_req_umac *cmd = mvm->scan_cmd; struct iwl_scan_umac_chan_param *chan_param; void *cmd_data = iwl_mvm_get_scan_req_umac_data(mvm); - void *sec_part = cmd_data + sizeof(struct iwl_scan_channel_cfg_umac) * + void *sec_part = (u8 *)cmd_data + sizeof(struct iwl_scan_channel_cfg_umac) * mvm->fw->ucode_capa.n_scan_channels; struct iwl_scan_req_umac_tail_v2 *tail_v2 = (struct iwl_scan_req_umac_tail_v2 *)sec_part; diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/internal.h b/drivers/net/wireless/intel/iwlwifi/pcie/internal.h index a43e56c7689f..6dce36d32693 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/internal.h +++ b/drivers/net/wireless/intel/iwlwifi/pcie/internal.h @@ -363,7 +363,7 @@ struct iwl_trans_pcie { /* PCI bus related data */ struct pci_dev *pci_dev; - void __iomem *hw_base; + u8 __iomem *hw_base; bool ucode_write_complete; bool sx_complete; diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c index 9e488f21fde2..21cddfc279d4 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/rx.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/rx.c @@ -727,7 +727,7 @@ static int iwl_pcie_alloc_rxq_dma(struct iwl_trans *trans, goto err; } - rxq->rb_stts = trans_pcie->base_rb_stts + rxq->id * rb_stts_size; + rxq->rb_stts = (u8 *)trans_pcie->base_rb_stts + rxq->id * rb_stts_size; rxq->rb_stts_dma = trans_pcie->base_rb_stts_dma + rxq->id * rb_stts_size; diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c index ea6823b73b99..94efaddfdcc4 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c @@ -2864,7 +2864,7 @@ static ssize_t iwl_dbgfs_monitor_data_read(struct file *file, { struct iwl_trans *trans = file->private_data; struct iwl_trans_pcie *trans_pcie = IWL_TRANS_GET_PCIE_TRANS(trans); - void *cpu_addr = (void *)trans->dbg.fw_mon.block, *curr_buf; + u8 *cpu_addr = (void *)trans->dbg.fw_mon.block, *curr_buf; struct cont_rec *data = &trans_pcie->fw_mon_data; u32 write_ptr_addr, wrap_cnt_addr, write_ptr, wrap_cnt; ssize_t size, bytes_copied = 0; diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/tx.c b/drivers/net/wireless/intel/iwlwifi/pcie/tx.c index abe80083fb9b..e3b69476f515 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/tx.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/tx.c @@ -154,7 +154,7 @@ static int iwl_pcie_txq_build_tfd(struct iwl_trans *trans, struct iwl_txq *txq, void *tfd; u32 num_tbs; - tfd = txq->tfds + trans->txqs.tfd.size * txq->write_ptr; + tfd = (u8 *)txq->tfds + trans->txqs.tfd.size * txq->write_ptr; if (reset) memset(tfd, 0, trans->txqs.tfd.size); diff --git a/drivers/net/wireless/intel/iwlwifi/queue/tx.c b/drivers/net/wireless/intel/iwlwifi/queue/tx.c index 0730657d54bf..e31ae5d0e26a 100644 --- a/drivers/net/wireless/intel/iwlwifi/queue/tx.c +++ b/drivers/net/wireless/intel/iwlwifi/queue/tx.c @@ -189,7 +189,7 @@ static struct page *get_workaround_page(struct iwl_trans *trans, return NULL; /* set the chaining pointer to the previous page if there */ - *(void **)(page_address(ret) + PAGE_SIZE - sizeof(void *)) = *page_ptr; + *(void **)((u8 *)page_address(ret) + PAGE_SIZE - sizeof(void *)) = *page_ptr; *page_ptr = ret; return ret; @@ -314,7 +314,7 @@ struct iwl_tso_hdr_page *get_page_hdr(struct iwl_trans *trans, size_t len, return NULL; p->pos = page_address(p->page); /* set the chaining pointer to NULL */ - *(void **)(page_address(p->page) + PAGE_SIZE - sizeof(void *)) = NULL; + *(void **)((u8 *)page_address(p->page) + PAGE_SIZE - sizeof(void *)) = NULL; out: *page_ptr = p->page; get_page(p->page); @@ -963,7 +963,7 @@ void iwl_txq_free_tso_page(struct iwl_trans *trans, struct sk_buff *skb) while (next) { struct page *tmp = next; - next = *(void **)(page_address(next) + PAGE_SIZE - + next = *(void **)((u8 *)page_address(next) + PAGE_SIZE - sizeof(void *)); __free_page(tmp); } diff --git a/drivers/net/wireless/intel/iwlwifi/queue/tx.h b/drivers/net/wireless/intel/iwlwifi/queue/tx.h index 20efc62acf13..19178c88bb22 100644 --- a/drivers/net/wireless/intel/iwlwifi/queue/tx.h +++ b/drivers/net/wireless/intel/iwlwifi/queue/tx.h @@ -41,7 +41,7 @@ static inline void *iwl_txq_get_tfd(struct iwl_trans *trans, if (trans->trans_cfg->use_tfh) idx = iwl_txq_get_cmd_index(txq, idx); - return txq->tfds + trans->txqs.tfd.size * idx; + return (u8 *)txq->tfds + trans->txqs.tfd.size * idx; } int iwl_txq_alloc(struct iwl_trans *trans, struct iwl_txq *txq, int slots_num,