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authorMatthieu CASTET <castet.matthieu@free.fr>2009-06-04 23:18:33 +0200
committerJohn W. Linville <linville@tuxdriver.com>2009-06-10 13:27:53 -0400
commitb52a033c2c501a8015df3727a4bd73389ccb1641 (patch)
tree57275be394a4031015d7978b3cc11dfd87d4ae9b /drivers/net
parent5ee58d7e6ad019675b4090582aec4fa1180d8703 (diff)
downloadlinux-b52a033c2c501a8015df3727a4bd73389ccb1641.tar.bz2
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>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/wireless/b43/xmit.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/net/wireless/b43/xmit.c b/drivers/net/wireless/b43/xmit.c
index a63d88841df8..55f36a7254d9 100644
--- a/drivers/net/wireless/b43/xmit.c
+++ b/drivers/net/wireless/b43/xmit.c
@@ -118,7 +118,6 @@ u8 b43_plcp_get_ratecode_ofdm(const u8 bitrate)
void b43_generate_plcp_hdr(struct b43_plcp_hdr4 *plcp,
const u16 octets, const u8 bitrate)
{
- __le32 *data = &(plcp->data);
__u8 *raw = plcp->raw;
if (b43_is_ofdm_rate(bitrate)) {
@@ -127,7 +126,7 @@ void b43_generate_plcp_hdr(struct b43_plcp_hdr4 *plcp,
d = b43_plcp_get_ratecode_ofdm(bitrate);
B43_WARN_ON(octets & 0xF000);
d |= (octets << 5);
- *data = cpu_to_le32(d);
+ plcp->data = cpu_to_le32(d);
} else {
u32 plen;
@@ -141,7 +140,7 @@ void b43_generate_plcp_hdr(struct b43_plcp_hdr4 *plcp,
raw[1] = 0x04;
} else
raw[1] = 0x04;
- *data |= cpu_to_le32(plen << 16);
+ plcp->data |= cpu_to_le32(plen << 16);
raw[0] = b43_plcp_get_ratecode_cck(bitrate);
}
}