endianness annotations and fixes for olympic
* missing braces in !readl(...) & ...
* trivial endianness annotations
* in olympic_arb_cmd() the loop collecting fragments of
packet is b0rken on big-endian - we have
(next_ptr && (buf_ptr=olympic_priv->olympic_lap + ntohs(next_ptr)))
as condition and it should have swab16(), not ntohs() - it's host-endian
byteswapped, not big-endian. So if we get more than one fragment on big-endian
host, we get screwed.
This ntohs() got missed back when the rest of those had been switched
to swab16() in 2.4.0-test2-pre1 - at a guess, nobody had hit fragmented
packets during the testing of PPC fixes.
PS: Ken Aaker cc'd on assumption that he is the same guy who'd done the
original set of PPC fixes in olympic
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
diff --git a/drivers/net/tokenring/olympic.h b/drivers/net/tokenring/olympic.h
index 2fc59c9..c919563 100644
--- a/drivers/net/tokenring/olympic.h
+++ b/drivers/net/tokenring/olympic.h
@@ -216,31 +216,31 @@
/* xxxx These structures are all little endian in hardware. */
struct olympic_tx_desc {
- u32 buffer;
- u32 status_length;
+ __le32 buffer;
+ __le32 status_length;
};
struct olympic_tx_status {
- u32 status;
+ __le32 status;
};
struct olympic_rx_desc {
- u32 buffer;
- u32 res_length;
+ __le32 buffer;
+ __le32 res_length;
};
struct olympic_rx_status {
- u32 fragmentcnt_framelen;
- u32 status_buffercnt;
+ __le32 fragmentcnt_framelen;
+ __le32 status_buffercnt;
};
/* xxxx END These structures are all little endian in hardware. */
/* xxxx There may be more, but I'm pretty sure about these */
struct mac_receive_buffer {
- u16 next ;
+ __le16 next ;
u8 padding ;
u8 frame_status ;
- u16 buffer_length ;
+ __le16 buffer_length ;
u8 frame_data ;
};