[RFC v3] PCMCIA locking updates for 2.6.34

Wolfram Sang w.sang at pengutronix.de
Mon Jan 18 15:41:43 EST 2010

Hi Dominik

> Well, as we're seeing real issues relating to the lack of locking, 2.6.33 is
> still some time away, and 2.6.34 is even further away, I tend to aim for
> 2.6.34, unless any further major problems appear.

Ah, okay, I agree.

> The v3 of the locking pathes are available in the git repository at:
>   git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6.git#locking
> and will be send out to this list.

Complete series:

Tested-by: Wolfram Sang <w.sang at pengutronix.de>

No lockdep-warnings anymore whatever I tried. kmemleak reports something, but
this is a different issue (haven't even checked if this is a false positive). I
just put it here as I stumbled over it during this test-run:

unreferenced object 0xb5c644a0 (size 32):
  comm "pccardd", pid 1298, jiffies 202222 (age 1400.050s)
  hex dump (first 32 bytes):
    20 00 a7 a6 20 a4 a5 9e d6 a4 87 f4 9c b4 c5 96   ... ...........
    2e 62 6a a6 27 23 e2 ca 62 e2 a2 62 6e c2 ae ee  .bj.'#..b..bn...
    [<8052ece1>] kmemleak_alloc+0x61/0xb0
    [<801c4b8a>] __kmalloc+0x1ba/0x1f0
    [<c1db240c>] pcmcia_device_query+0x26c/0x320 [pcmcia]
    [<c1db33b8>] pcmcia_device_add+0x368/0x490 [pcmcia]
    [<c1db359a>] pcmcia_card_add+0xba/0x1e0 [pcmcia]
    [<c1db373e>] ds_event+0x7e/0x230 [pcmcia]
    [<c186157a>] send_event+0xba/0x160 [pcmcia_core]
    [<c18623a6>] socket_insert+0x156/0x1b0 [pcmcia_core]
    [<c1862865>] pccardd+0x2c5/0x3a0 [pcmcia_core]
    [<8014b374>] kthread+0x74/0x80
    [<801031ba>] kernel_thread_helper+0x6/0x10
    [<ffffffff>] 0xffffffff



Pengutronix e.K.                           | Wolfram Sang                |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
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