提交 d10358de 编写于 作者: U Ulrich Hecht 提交者: David S. Miller

via-velocity: don't annotate MAC registers as packed

On ARM, memory accesses through packed pointers behave in unexpected
ways in GCC releases 4.3 and higher; see https://lkml.org/lkml/2011/2/2/163
for discussion.

In this particular case, 32-bit I/O registers are accessed bytewise,
causing incorrect setting of the DMA address registers which in turn
leads to an error interrupt storm that brings the system to a halt.

Since the mac_regs structure does not need any packing anyway, this patch
simply removes the attribute to fix the issue.
Signed-off-by: NUlrich Hecht <uli@suse.de>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 1ba37c51
......@@ -1096,7 +1096,7 @@ struct mac_regs {
volatile __le16 PatternCRC[8]; /* 0xB0 */
volatile __le32 ByteMask[4][4]; /* 0xC0 */
} __packed;
};
enum hw_mib {
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册