lkml.org 
[lkml]   [2019]   [Jun]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [BISECTED REGRESSION] b43legacy broken on G4 PowerBook
On Sat, Jun 08, 2019 at 02:21:23PM +1000, Benjamin Herrenschmidt wrote:
>
> > Please try the attached patch. I'm not really pleased with it and I will
> > continue to determine why the fallback to a 30-bit mask fails, but at least this
> > one works for me.
>
> Your patch only makes sense if the device is indeed capable of
> addressing 31-bits.
>
> So either the driver is buggy and asks for a too small mask in which
> case your patch is ok, or it's not and you're just going to cause all
> sort of interesting random problems including possible memory
> corruption.

Well, my patches changes ZONE_DMA to be 30-bits instead of 31, and
thus should allow requesting a 30-bit mask to succeed.

\
 
 \ /
  Last update: 2019-06-08 09:25    [W:0.107 / U:12.476 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site