diff options
| author | Devidas Puranik | 2017-03-09 09:36:17 +0100 |
|---|---|---|
| committer | Kalle Valo | 2017-03-20 18:05:21 +0100 |
| commit | 92c70a958b0b6b7e729a47a7c85762636859eee9 (patch) | |
| tree | b0fa2fa9fef5e6c84605f38f2445627d5737362e /drivers/net/wireless/marvell/mwifiex/sdio.c | |
| parent | mwifiex: Use accessors routines for unaligned values (diff) | |
| download | kernel-qcow2-linux-92c70a958b0b6b7e729a47a7c85762636859eee9.tar.gz kernel-qcow2-linux-92c70a958b0b6b7e729a47a7c85762636859eee9.tar.xz kernel-qcow2-linux-92c70a958b0b6b7e729a47a7c85762636859eee9.zip | |
mwifiex: fix for unaligned reads
Using the accessor function e.g. get_unaligned_le32 instead of
le32_to_cpu to avoid the unaligned access. This is for the
architectures that don't handle the unaligned memory access
Signed-off-by: Devidas Puranik <devidas@marvell.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/sdio.c')
| -rw-r--r-- | drivers/net/wireless/marvell/mwifiex/sdio.c | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/drivers/net/wireless/marvell/mwifiex/sdio.c b/drivers/net/wireless/marvell/mwifiex/sdio.c index a4b356d267f9..9f7cabf0236b 100644 --- a/drivers/net/wireless/marvell/mwifiex/sdio.c +++ b/drivers/net/wireless/marvell/mwifiex/sdio.c @@ -943,7 +943,7 @@ static int mwifiex_sdio_card_to_host(struct mwifiex_adapter *adapter, return -1; } - nb = le16_to_cpu(*(__le16 *) (buffer)); + nb = get_unaligned_le16((buffer)); if (nb > npayload) { mwifiex_dbg(adapter, ERROR, "%s: invalid packet, nb=%d npayload=%d\n", @@ -951,7 +951,7 @@ static int mwifiex_sdio_card_to_host(struct mwifiex_adapter *adapter, return -1; } - *type = le16_to_cpu(*(__le16 *) (buffer + 2)); + *type = get_unaligned_le16((buffer + 2)); return ret; } @@ -1139,7 +1139,8 @@ static void mwifiex_deaggr_sdio_pkt(struct mwifiex_adapter *adapter, __func__, blk_num, blk_size, total_pkt_len); break; } - pkt_len = le16_to_cpu(*(__le16 *)(data + SDIO_HEADER_OFFSET)); + pkt_len = get_unaligned_le16((data + + SDIO_HEADER_OFFSET)); if ((pkt_len + SDIO_HEADER_OFFSET) > blk_size) { mwifiex_dbg(adapter, ERROR, "%s: error in pkt_len,\t" @@ -1172,10 +1173,11 @@ static int mwifiex_decode_rx_packet(struct mwifiex_adapter *adapter, struct sk_buff *skb, u32 upld_typ) { u8 *cmd_buf; - __le16 *curr_ptr = (__le16 *)skb->data; - u16 pkt_len = le16_to_cpu(*curr_ptr); + u16 pkt_len; struct mwifiex_rxinfo *rx_info; + pkt_len = get_unaligned_le16(skb->data); + if (upld_typ != MWIFIEX_TYPE_AGGR_DATA) { skb_trim(skb, pkt_len); skb_pull(skb, INTF_HEADER_LEN); @@ -1235,7 +1237,7 @@ static int mwifiex_decode_rx_packet(struct mwifiex_adapter *adapter, case MWIFIEX_TYPE_EVENT: mwifiex_dbg(adapter, EVENT, "info: --- Rx: Event ---\n"); - adapter->event_cause = le32_to_cpu(*(__le32 *) skb->data); + adapter->event_cause = get_unaligned_le32(skb->data); if ((skb->len > 0) && (skb->len < MAX_EVENT_SIZE)) memcpy(adapter->event_body, @@ -1392,8 +1394,8 @@ static int mwifiex_sdio_card_to_host_mp_aggr(struct mwifiex_adapter *adapter, u32 *len_arr = card->mpa_rx.len_arr; /* get curr PKT len & type */ - pkt_len = le16_to_cpu(*(__le16 *) &curr_ptr[0]); - pkt_type = le16_to_cpu(*(__le16 *) &curr_ptr[2]); + pkt_len = get_unaligned_le16(&curr_ptr[0]); + pkt_type = get_unaligned_le16(&curr_ptr[2]); /* copy pkt to deaggr buf */ skb_deaggr = mwifiex_alloc_dma_align_buf(len_arr[pind], @@ -1874,8 +1876,9 @@ static int mwifiex_sdio_host_to_card(struct mwifiex_adapter *adapter, /* Allocate buffer and copy payload */ blk_size = MWIFIEX_SDIO_BLOCK_SIZE; buf_block_len = (pkt_len + blk_size - 1) / blk_size; - *(__le16 *)&payload[0] = cpu_to_le16((u16)pkt_len); - *(__le16 *)&payload[2] = cpu_to_le16(type); + put_unaligned_le16((u16)pkt_len, payload + 0); + put_unaligned_le16((u32)type, payload + 2); + /* * This is SDIO specific header |