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| author | Daniel Mentz <danielmentz@google.com> | 2017-03-09 14:06:16 +0530 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2017-03-20 19:05:21 +0200 |
| commit | 5653c6462f56e13cb943cd572fdae9252157a523 (patch) | |
| tree | 3bdb0b12ddc8ec0a33ec2bcfa8f4e8a5e6250ea3 /drivers/net/wireless/marvell/mwifiex/scan.c | |
| parent | 5c0b87987432ad9d2c7068dc739d9f21bb6ff72e (diff) | |
| download | linux-5653c6462f56e13cb943cd572fdae9252157a523.tar.bz2 | |
mwifiex: Use accessors routines for unaligned values
Synopsys' ARCompact architecture does not support loading from or
storing values to unaligned memory locations. We saw a series of
misaligned access exceptions on ARC. To work around this issue, we bulk
replaced le16_to_cpu and le32_to_cpu with get_unaligned_le16 and
get_unaligned_le32, respectively. We also added le16_unaligned_add_cpu
which is similar to le16_add_cpu but works with unaligned values.
Signed-off-by: Daniel Mentz <danielmentz@google.com>
Signed-off-by: Ganapathi Bhat <gbhat@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net/wireless/marvell/mwifiex/scan.c')
| -rw-r--r-- | drivers/net/wireless/marvell/mwifiex/scan.c | 26 |
1 files changed, 16 insertions, 10 deletions
diff --git a/drivers/net/wireless/marvell/mwifiex/scan.c b/drivers/net/wireless/marvell/mwifiex/scan.c index 181691684a08..8cd12347ee3b 100644 --- a/drivers/net/wireless/marvell/mwifiex/scan.c +++ b/drivers/net/wireless/marvell/mwifiex/scan.c @@ -691,8 +691,9 @@ mwifiex_scan_channel_list(struct mwifiex_private *priv, /* Increment the TLV header length by the size appended */ - le16_add_cpu(&chan_tlv_out->header.len, - sizeof(chan_tlv_out->chan_scan_param)); + le16_unaligned_add_cpu(&chan_tlv_out->header.len, + sizeof( + chan_tlv_out->chan_scan_param)); /* * The tlv buffer length is set to the number of bytes @@ -859,6 +860,7 @@ mwifiex_config_scan(struct mwifiex_private *priv, *scan_current_only = false; if (user_scan_in) { + u8 tmpaddr[ETH_ALEN]; /* Default the ssid_filter flag to TRUE, set false under certain wildcard conditions and qualified by the existence @@ -883,8 +885,10 @@ mwifiex_config_scan(struct mwifiex_private *priv, user_scan_in->specific_bssid, sizeof(scan_cfg_out->specific_bssid)); + memcpy(tmpaddr, scan_cfg_out->specific_bssid, ETH_ALEN); + if (adapter->ext_scan && - !is_zero_ether_addr(scan_cfg_out->specific_bssid)) { + !is_zero_ether_addr(tmpaddr)) { bssid_tlv = (struct mwifiex_ie_types_bssid_list *)tlv_pos; bssid_tlv->header.type = cpu_to_le16(TLV_TYPE_BSSID); @@ -947,8 +951,9 @@ mwifiex_config_scan(struct mwifiex_private *priv, * truncate scan results. That is not an issue with an SSID * or BSSID filter applied to the scan results in the firmware. */ + memcpy(tmpaddr, scan_cfg_out->specific_bssid, ETH_ALEN); if ((i && ssid_filter) || - !is_zero_ether_addr(scan_cfg_out->specific_bssid)) + !is_zero_ether_addr(tmpaddr)) *filtered_scan = true; if (user_scan_in->scan_chan_gap) { @@ -1742,7 +1747,7 @@ mwifiex_parse_single_response_buf(struct mwifiex_private *priv, u8 **bss_info, if (*bytes_left >= sizeof(beacon_size)) { /* Extract & convert beacon size from command buffer */ - beacon_size = le16_to_cpu(*(__le16 *)(*bss_info)); + beacon_size = get_unaligned_le16((*bss_info)); *bytes_left -= sizeof(beacon_size); *bss_info += sizeof(beacon_size); } @@ -2369,8 +2374,9 @@ int mwifiex_cmd_802_11_bg_scan_config(struct mwifiex_private *priv, temp_chan = chan_list_tlv->chan_scan_param + chan_idx; /* Increment the TLV header length by size appended */ - le16_add_cpu(&chan_list_tlv->header.len, - sizeof(chan_list_tlv->chan_scan_param)); + le16_unaligned_add_cpu(&chan_list_tlv->header.len, + sizeof( + chan_list_tlv->chan_scan_param)); temp_chan->chan_number = bgscan_cfg_in->chan_list[chan_idx].chan_number; @@ -2407,8 +2413,8 @@ int mwifiex_cmd_802_11_bg_scan_config(struct mwifiex_private *priv, mwifiex_bgscan_create_channel_list(priv, bgscan_cfg_in, chan_list_tlv-> chan_scan_param); - le16_add_cpu(&chan_list_tlv->header.len, - chan_num * + le16_unaligned_add_cpu(&chan_list_tlv->header.len, + chan_num * sizeof(chan_list_tlv->chan_scan_param[0])); } @@ -2432,7 +2438,7 @@ int mwifiex_cmd_802_11_bg_scan_config(struct mwifiex_private *priv, /* Append vendor specific IE TLV */ mwifiex_cmd_append_vsie_tlv(priv, MWIFIEX_VSIE_MASK_BGSCAN, &tlv_pos); - le16_add_cpu(&cmd->size, tlv_pos - bgscan_config->tlv); + le16_unaligned_add_cpu(&cmd->size, tlv_pos - bgscan_config->tlv); return 0; } |