Message ID | 1315721335-14236-1-git-send-email-ike.pan@canonical.com |
---|---|
State | New |
Headers | show |
On 09/11/2011 12:08 AM, Ike Panhc wrote: > There is a bug which will cause kernel panic has been found[1] and the revised > patch is on mailing list[2]. > > In ideapad_backlight_notify_power() when acpi_backlight=video, blightdev is > NULL and kernel panic happen when driver tries to access it. The best way to > solve this is to check blightdev at the top of the function. > > Oneiric kernel will be freezed on September 15th and looks like this patch > will be merged into mainline after, but I strongly suggest to have this patch > before kernel freeze because this patch can prevent kernel panic when user hit > the backlight power hotkey. > > [1] http://www.mail-archive.com/platform-driver-x86@vger.kernel.org/msg02340.html > > [2] http://www.mail-archive.com/platform-driver-x86@vger.kernel.org/msg02343.html > > > The following changes since commit 6242e334ff8a9f1651c2515535d98485e343dcb1: > > UBUNTU: Ubuntu-3.0.0-10.16 (2011-09-02 09:18:31 -0700) > > are available in the git repository at: > git://kernel.ubuntu.com/ikepanhc/public.git ideapad-for-oneiric-fix > > Rene Bolldorf (1): > ideapad: Check if acpi already handle backlight power in > 'ideapad_backlight_notify_power' to avoid a page fault > > drivers/platform/x86/ideapad-laptop.c | 2 ++ > 1 files changed, 2 insertions(+), 0 deletions(-) >