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fix unaligned accesses in b43/xmit.c (#5169)

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SVN-Revision: 16474
This commit is contained in:
Florian Fainelli 2009-06-15 14:34:54 +00:00
parent 3054efa82a
commit 9d35896314
1 changed files with 52 additions and 0 deletions
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52
package/mac80211/patches/541-b43_unaligned_access.pach Normal file
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@ -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.
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