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b43: Fix possible unaligned u32 access
Fix possible unaligned u32 access in b43_generate_plcp_hdr(). Unaligned data is read/write with a u32 pointer instead of using the packed structure. Some versions of gcc ignore the "packed" attribute, if the structure element is accessed through a local pointer. Signed-off-by: Matthieu CASTET <castet.matthieu@free.fr> Signed-off-by: Michael Buesch <mb@bu3sch.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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@ -118,7 +118,6 @@ u8 b43_plcp_get_ratecode_ofdm(const u8 bitrate)
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void b43_generate_plcp_hdr(struct b43_plcp_hdr4 *plcp,
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const u16 octets, const u8 bitrate)
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{
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__le32 *data = &(plcp->data);
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__u8 *raw = plcp->raw;
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if (b43_is_ofdm_rate(bitrate)) {
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@ -127,7 +126,7 @@ void b43_generate_plcp_hdr(struct b43_plcp_hdr4 *plcp,
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d = b43_plcp_get_ratecode_ofdm(bitrate);
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B43_WARN_ON(octets & 0xF000);
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d |= (octets << 5);
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*data = cpu_to_le32(d);
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plcp->data = cpu_to_le32(d);
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} else {
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u32 plen;
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@ -141,7 +140,7 @@ void b43_generate_plcp_hdr(struct b43_plcp_hdr4 *plcp,
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raw[1] = 0x04;
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} else
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raw[1] = 0x04;
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*data |= cpu_to_le32(plen << 16);
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plcp->data |= cpu_to_le32(plen << 16);
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raw[0] = b43_plcp_get_ratecode_cck(bitrate);
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}
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}
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