lkml.org 
[lkml]   [2013]   [Feb]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 37/77] i2c: convert to idr_alloc()
Hello,

On Thu, Feb 07, 2013 at 03:28:31PM +0000, Mark Brown wrote:
> On Wed, Feb 06, 2013 at 11:40:09AM -0800, Tejun Heo wrote:
> > Convert to the much saner new idr interface.
> >
> > Only compile tested.
>
> This broke I2C for me in -next today, I saw a spinlock bad magic error
> calling pm_runtime_enable().

Hmmm... weird, can't see where the difference in behavior would come
from. The only material difference would be if id < 0 && id != -1 in
i2c_add_numbered_adapter(), which now would trigger WARN_ON_ONCE()
inside idr_alloc() instead of silently returning -EINVAL.

Can you please elaborate the failure? I can't see how the idr
conversion would lead to spinlock bad magic error. Does reverting
this patch make the problem go away?

Thanks.

--
tejun


\
 
 \ /
  Last update: 2013-02-07 18:02    [W:0.083 / U:0.220 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site