lkml.org 
[lkml]   [2009]   [Aug]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [PATCH] acpi: fix acpi_device_{install,remove}_notify_handler() for _HID-less devices
Date

Hi,

On Friday 07 August 2009 02:53:53 Lin Ming wrote:
> On Fri, 2009-08-07 at 03:41 +0800, Bartlomiej Zolnierkiewicz wrote:
> > From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
> > Subject: [PATCH] acpi: fix acpi_device_{install,remove}_notify_handler() for _HID-less devices
>
> Hi,
>
> The patch in -mm tree titled
> "acpi-fix-null-bug-for-hid-uid-string-2.patch"
> has fixed this regression.
> Would you please give it a try?
>
> The patch attached below.
>
> Subject: acpi: fix NULL bug for HID/UID string
> From: Hugh Dickins <hugh.dickins@tiscali.co.uk>
>
> acpi_device->pnp.hardware_id and unique_id are now allocated pointers,
> replacing the previous arrays. acpi_device_install_notify_handler()
> oopsed on the NULL hid when probing the video device, and perhaps other
> uses are vulnerable too. So initialize those pointers to empty strings
> when there is no hid or uid. Also, free hardware_id and unique_id when
> when acpi_device is going to be freed.
>
> Signed-off-by: Hugh Dickins <hugh.dickins@tiscali.co.uk>
> Signed-off-by: Lin Ming <ming.m.lin@intel.com>
> Cc: Valdis Kletnieks <Valdis.Kletnieks@vt.edu>
> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

Hugh's patch also fixes the problem and I like it more than mine version
(BTW mmotm still contains older acpi-fix-null-bug-for-hid-uid-string.patch
not acpi-fix-null-bug-for-hid-uid-string-2.patch).

Andrew, could mmotm be somehow integrated with -next (the above bug was
fixed in mmotm two weeks ago already)? If you're worried about affecting
-next's quality, worry not, it really can't be much worse than it is now
(at least we would have all outstanding patches really in the one place)..

Thanks,
Bart


\
 
 \ /
  Last update: 2009-08-07 15:13    [W:0.034 / U:0.636 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site