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kernel/pub/scm/linux/kernel/git/stable/stable-queue/3ae5ede2e4b7f1c9b5229a79fcb81ab4d2d3c2bb/./releases/5.15.135/iwlwifi-avoid-void-pointer-arithmetic.patch
blob: 0b38ed7abd6ec1fa5ed62df89f89fc33c1117efc [file]
From abc7ba2710aeecaa3bfafdf0739585bc542dafe5 Mon Sep 17 00:00:00 2001
From: Sasha Levin <sashal@kernel.org>
Date: Fri, 28 Jan 2022 15:34:29 +0200
Subject: iwlwifi: avoid void pointer arithmetic
From: Johannes Berg <johannes.berg@intel.com>
[ Upstream commit 3827cb59b3b8ce4b1687385d35034dadcd90d7ce ]
Avoid void pointer arithmetic since it's technically
undefined and causes warnings in some places that use
our code.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20220128153014.e349104ecd94.Iadc937f475158b9437becdfefb361a97e7eaa934@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Stable-dep-of: 8ba438ef3cac ("wifi: iwlwifi: mvm: Fix a memory corruption issue")
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/wireless/intel/iwlwifi/fw/dbg.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 +-
13 files changed, 17 insertions(+), 17 deletions(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/dbg.c b/drivers/net/wireless/intel/iwlwifi/fw/dbg.c
index c69f3fb833327..f34a02b33ccd4 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/dbg.c
+++ b/drivers/net/wireless/intel/iwlwifi/fw/dbg.c
@@ -1960,7 +1960,7 @@ static u32 iwl_dump_ini_mem(struct iwl_fw_runtime *fwrt, struct list_head *list,
struct iwl_fw_ini_error_dump_header *header;
u32 type = le32_to_cpu(reg->type), id = le32_to_cpu(reg->id);
u32 num_of_ranges, i, size;
- void *range;
+ u8 *range;
/*
* The higher part of the ID in version 2 is irrelevant for
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/d3.c b/drivers/net/wireless/intel/iwlwifi/mvm/d3.c
index 6dde3bd8f4416..27756e47f7caf 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/d3.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/d3.c
@@ -1090,7 +1090,7 @@ 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 0f5c4c2510ef1..3c8eeb565135a 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c
@@ -1950,7 +1950,7 @@ 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 6d439ae7b50b1..f347723092eee 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c
@@ -686,7 +686,7 @@ 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 8ef5399ad9be6..d779e5e19568b 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 411254e9e603f..2e3eb7402197f 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c
@@ -220,8 +220,8 @@ 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 65e382756de68..e4fd58f043ce2 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/scan.c
@@ -2150,7 +2150,7 @@ 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 a43e56c7689f3..6dce36d326935 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 6c6512158813b..f82fb17450165 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 04e1f3829e96b..4456aef930cf4 100644
--- a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c
@@ -2798,7 +2798,7 @@ 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 4f6c187eed69c..76d25c62a28e2 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 0f3526b0c5b00..8522cdfc9e5d3 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 20efc62acf133..19178c88bb229 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,
--
2.40.1