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	Tue, 4 Nov 2008 21:02:10 -0500
Date: Wed, 5 Nov 2008 02:02:07 +0000 (GMT)
From: Hin-Tak Leung <htl10@users.sourceforge.net>
Reply-To: htl10@users.sourceforge.net
Subject: Re: [RFC/RFT PATCH v2 2/2] rtl8187: feedback transmitted packets using tx close descriptor for 8187B
To: Herton Ronaldo Krzesinski <herton@mandriva.com.br>,
	Larry Finger <Larry.Finger@lwfinger.net>
Cc: linux-wireless@vger.kernel.org,
	John W Linville <linville@tuxdriver.com>,
	Johannes Berg <johannes@sipsolutions.net>,
	Michael Wu <flamingice@sourmilk.net>,
	Andrea Merello <andrea.merello@gmail.com>
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--- On Tue, 4/11/08, Larry Finger <Larry.Finger@lwfinger.net> wrote:
> > Signed-off-by: Herton Ronaldo Krzesinski
> <herton@mandriva.com.br>
> 
> Tested-by: Larry Finger <Larry.Finger@lwfinger.net>

I tried with this combo:

compat-wireless: master-2008-10-31
wireless-testing: v2.6.28-rc2-4239-gd80fe00

and applying the two patches on top, they applies cleanly and compile okay except for some warnings in a different module about missing symbols (<something>_sta) but the result dies very painfully with a kernel oops:
-------------
BUG: unable to handle kernel NULL pointer dereference at 0000000000000307
IP: [<ffffffffa0105988>] rtl8187_probe+0x7f/0x836 [rtl8187]
PGD 754c4067 PUD 751d5067 PMD 0 
Oops: 0002 [1] SMP 
CPU 0 
Modules linked in: rtl8187(+) snd_page_alloc video firewire_ohci firewire_core shpchp pcspkr eeprom_93cx6 output ac battery joydev r8169 crc_itu_t soundcore 
i2c_piix4 k8temp hwmon pata_atiixp radeon drm i2c_algo_bit i2c_core
Pid: 829, comm: modprobe Not tainted 2.6.27.4-73.fc10.x86_64 #1
RIP: 0010:[<ffffffffa0105988>]  [<ffffffffa0105988>] rtl8187_probe+0x7f/0x836 [rtl8187]
RSP: 0018:ffff880074de1c48  EFLAGS: 00010246
RAX: ffffffffa0108520 RBX: ffff880074de1cd0 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffff8800754763c8 RDI: 0000000000000040
RBP: ffff880074de1d08 R08: 00000000000003e8 R09: ffff8800776ed868
R10: ffff8800754761c4 R11: 000000000000000a R12: 0000000000000000
R13: ffff8800754762e0 R14: 0000000000000038 R15: ffff880074958000
FS:  00007f5c8bef66f0(0000) GS:ffffffff8158a100(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000000000307 CR3: 0000000074dc6000 CR4: 00000000000006e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process modprobe (pid: 829, threadinfo ffff880074de0000, task ffff880075420000)
Stack:  ffff880074de1cb8 ffffffff8110d22f ffff880074de1c78 ffff880074de1c78
 ffff88007402af50 ffff88007402af50 ffffffffa0108520 ffff88007487a000
 ffff880074958000 ffffffff81031023 ffff880074de1ca8 ffffffff81353562
Call Trace:
 [<ffffffff8110d22f>] ? sysfs_addrm_finish+0x69/0x20e
 [<ffffffff81031023>] ? need_resched+0x1e/0x28
 [<ffffffff81353562>] ? _cond_resched+0x9/0x38
 [<ffffffff81353aee>] ? mutex_lock+0x22/0x33
 [<ffffffff81240d08>] ? usb_match_one_id+0x2b/0x88
 [<ffffffff812412df>] ? usb_autopm_do_device+0xc8/0xd4
 [<ffffffff812418b5>] usb_probe_interface+0x10e/0x14b
 [<ffffffff811f64c4>] driver_probe_device+0xc0/0x16e
 [<ffffffff811f65c1>] __driver_attach+0x4f/0x79
 [<ffffffff811f6572>] ? __driver_attach+0x0/0x79
 [<ffffffff811f5d57>] bus_for_each_dev+0x4f/0x89
 [<ffffffff811f630f>] driver_attach+0x1c/0x1e
 [<ffffffff811f5677>] bus_add_driver+0xb7/0x201
 [<ffffffff811f67b0>] driver_register+0xa8/0x128
 [<ffffffff81241aff>] usb_register_driver+0x80/0xe4
 [<ffffffffa00bb000>] ? rtl8187_init+0x0/0x20 [rtl8187]
 [<ffffffffa00bb01e>] rtl8187_init+0x1e/0x20 [rtl8187]
 [<ffffffff8100a047>] do_one_initcall+0x47/0x12e
 [<ffffffff81065be1>] sys_init_module+0xa9/0x1b6
 [<ffffffff8101024a>] system_call_fastpath+0x16/0x1b


Code: 24 e1 e9 98 07 00 00 48 81 eb 88 00 00 00 48 89 5d 80 4c 8b 60 40 48 8d 5d c8 48 8b 85 70 ff ff ff 4d 8d 74 24 38 48 83 78 10 01 <41> 0f 94 84 24 07 03
 00 00 48 8b 85 78 ff ff ff 49 8b 55 28 48 
RIP  [<ffffffffa0105988>] rtl8187_probe+0x7f/0x836 [rtl8187]
 RSP <ffff880074de1c48>
CR2: 0000000000000307
---[ end trace aed852fa39b00f8c ]---
---------


Hin-Tak