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Subject[PATCH] Re: I2O on 2.5.64
On 07 Mar 2003 09:02:43 -0800 Stephen Hemminger <shemminger@osdl.org> wrote:

| Enabled I2O on a test machine running 2.5.64 and it hangs during boot.
| Don't think the machine has SCSI but doesn't have any I2O capable
| devices.
|
| Last gasp:
|
| Linux I2O PCI support (c) 1999-2002 Red Hat.
| i2o: Checking for PCI I2O controllers...
| I2O Core - (C) Copyright 1999 Red Hat Software
| I2O: Event thread created as pid 44
| I2O configuration manager v 0.04.
| (C) Copyright 1999 Red Hat Software
| I2O Block Storage OSM v0.9
| (c) Copyright 1999-2001 Red Hat Software.
| i2o_block: Checking for Boot device...
| i2o_block: Checking for I2O Block devices...
| i2o_scsi.c: Version 0.1.2
| chain_pool: 0 bytes @ f7fe6ec0
| (512 byte buffers X 4 can_queue X 0 i2o controllers)

More details:
kernel BUG at include/asm/spinlock.h:123!
invalid operand: 0000
CPU: 0
EIP: 0060:[<c0316594>] Not tainted
EFLAGS: 00010046
EIP is at flush_pending+0x24/0xe0
eax: 0000000e ebx: 0000001f ecx: c0429c24 edx: 000037dd
esi: 00000000 edi: 00000246 ebp: c1aeff8c esp: c1aeff78
ds: 007b es: 007b ss: 0068
Process swapper (pid: 1, threadinfo=c1aee000 task=c1afc080)
Stack: c03baa94 c0316570 0000001f 00000000 f7cd2c4c c1aeffa4 c0316e81 00000000
c0316eb0 c0474380 00000000 c1aeffb8 c02b446b c0474380 c0474380 00000000
c1aeffc8 c04d1237 c0474380 c04d82b4 c1aeffd4 c04ba902 c1aee000 c1aeffec
Call Trace:
[<c0316570>] flush_pending+0x0/0xe0
[<c0316e81>] i2o_scsi_detect+0x1d1/0x200
[<c0316eb0>] i2o_scsi_release+0x0/0x50
[<c02b446b>] scsi_register_host+0x3b/0x90
[<c010511b>] init+0x8b/0x230
[<c0105090>] init+0x0/0x230
[<c0107399>] kernel_thread_helper+0x5/0xc


and the patch (WorksForMe: now boots): Alan, please apply.

patch_name: i2oscsi_spin.patch
patch_version: 2003-03-07.09:52:17
author: Randy.Dunlap <rddunlap@osdl.org>
description: _
product: Linux
product_versions: linux-2564
changelog: _
URL: _
requires: _
conflicts: _
diffstat: =
drivers/message/i2o/i2o_scsi.c | 2 +-
1 files changed, 1 insertion(+), 1 deletion(-)


diff -Naur ./drivers/message/i2o/i2o_scsi.c%SPIN ./drivers/message/i2o/i2o_scsi.c
--- ./drivers/message/i2o/i2o_scsi.c%SPIN Tue Mar 4 19:29:33 2003
+++ ./drivers/message/i2o/i2o_scsi.c Fri Mar 7 09:43:42 2003
@@ -85,7 +85,7 @@
static u32 *retry[32];
static struct i2o_controller *retry_ctrl[32];
static struct timer_list retry_timer;
-static spinlock_t retry_lock;
+static spinlock_t retry_lock = SPIN_LOCK_UNLOCKED;
static int retry_ct = 0;

static atomic_t queue_depth;

--
~Randy
-
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