RE: [PATCH V2] Quirk for IVB graphics FLR errata

2012-02-29 Thread Hao, Xudong
> -Original Message- > From: Jesse Barnes [mailto:jbar...@virtuousgeek.org] > Sent: Thursday, March 01, 2012 2:32 AM > To: Hao, Xudong > Cc: linux-...@vger.kernel.org; linux-ker...@vger.kernel.org; > kvm@vger.kernel.org; Kay, Allen M; Zhang, Xiantao > Subject: Re: [PA

Re: [PATCH V2] Quirk for IVB graphics FLR errata

2012-02-29 Thread Jesse Barnes
On Wed, 29 Feb 2012 03:11:24 + "Hao, Xudong" wrote: > For IvyBridge Mobile platform, a system hang may occur if a > FLR(Function Level Reset) is asserted to internal graphics. > > This quirk patch is workaround for the IVB FLR errata issue. > We are disabling the FLR reset handshake between

[PATCH V2] Quirk for IVB graphics FLR errata

2012-02-28 Thread Hao, Xudong
For IvyBridge Mobile platform, a system hang may occur if a FLR(Function Level Reset) is asserted to internal graphics. This quirk patch is workaround for the IVB FLR errata issue. We are disabling the FLR reset handshake between the PCH and CPU display, then manually powering down the panel pow