Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=594a9dfae7113d9601b2c353754c40d0b7e00a03
Commit: 594a9dfae7113d9601b2c353754c40d0b7e00a03
Parent: 8e54588161577435d64dfb5cfdf40a73a5705ea0
Author: Michael Chan <[EMAIL PROTECTED]>
AuthorDate: Tue Aug 28 15:39:42 2007 -0700
Committer: David S. Miller <[EMAIL PROTECTED]>
CommitDate: Tue Aug 28 15:39:42 2007 -0700
[BNX2]: Add write posting comment.
Add comment to explain why we cannot read back after chip reset
before delaying.
Signed-off-by: Michael Chan <[EMAIL PROTECTED]>
Signed-off-by: David S. Miller <[EMAIL PROTECTED]>
---
drivers/net/bnx2.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/drivers/net/bnx2.c b/drivers/net/bnx2.c
index 0091860..854d80c 100644
--- a/drivers/net/bnx2.c
+++ b/drivers/net/bnx2.c
@@ -3934,6 +3934,10 @@ bnx2_reset_chip(struct bnx2 *bp, u32 reset_code)
/* Chip reset. */
REG_WR(bp, BNX2_PCICFG_MISC_CONFIG, val);
+ /* Reading back any register after chip reset will hang the
+ * bus on 5706 A0 and A1. The msleep below provides plenty
+ * of margin for write posting.
+ */
if ((CHIP_ID(bp) == CHIP_ID_5706_A0) ||
(CHIP_ID(bp) == CHIP_ID_5706_A1))
msleep(20);
-
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