diff options
| -rw-r--r-- | package/mac80211/patches/541-b43_unaligned_access.pach | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/package/mac80211/patches/541-b43_unaligned_access.pach b/package/mac80211/patches/541-b43_unaligned_access.pach new file mode 100644 index 0000000000..36e22d82ea --- /dev/null +++ b/package/mac80211/patches/541-b43_unaligned_access.pach @@ -0,0 +1,52 @@ +From: Matthieu CASTET <castet.matthieu@free.fr> + +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> + +--- + +Please queue this bugfix. + + +diff --git a/drivers/net/wireless/b43/xmit.c b/drivers/net/wireless/b43/xmit.c +index a63d888..55f36a7 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); + } + } + +-- +Greetings, Michael. +-- +To unsubscribe from this list: send the line "unsubscribe linux-wireless" in +the body of a message to majordomo@vger.kernel.org +More majordomo info at http://vger.kernel.org/majordomo-info.html
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