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Re: WARNING: CPU: 4 PID: 863 at include/drm/drm_crtc.h:1577 drm_helper_choose_encoder_dpms+0x88/0x90() - evildoer found and neutralized

From Joerg Roedel <joro@8bytes.org>
Newsgroups linux.kernel
Subject Re: WARNING: CPU: 4 PID: 863 at include/drm/drm_crtc.h:1577 drm_helper_choose_encoder_dpms+0x88/0x90() - evildoer found and neutralized
Date 2015-10-05 12:10 +0200
Message-ID <qgaSu-4bV-15@gated-at.bofh.it> (permalink)
References (5 earlier) <qekjf-6VR-1@gated-at.bofh.it> <qeoZA-5g3-7@gated-at.bofh.it> <qet3c-2QO-19@gated-at.bofh.it> <qetwd-3ox-1@gated-at.bofh.it> <qfpAd-3DX-17@gated-at.bofh.it>
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Hi Jiang,

On Sat, Oct 03, 2015 at 03:36:35PM +0800, Jiang Liu wrote:
> So to summary, I think we only need following change to fix the
> regression:
>  int pcibios_alloc_irq(struct pci_dev *dev)
>  {
> +	if (pci_dev_msi_enabled(dev))
> +		return -EBUSY;
> 
> What do you think?

Yes, that works too and has the added benefit that no driver can attach
to the iommu device and get in the way of the driver.

Will you send the patch for this change or should I do it?



	Joerg

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Re: WARNING: CPU: 4 PID: 863 at include/drm/drm_crtc.h:1577 drm_helper_choose_encoder_dpms+0x88/0x90() Alex Deucher <alexdeucher@gmail.com> - 2015-09-22 22:00 +0200
  Re: WARNING: CPU: 4 PID: 863 at include/drm/drm_crtc.h:1577 drm_helper_choose_encoder_dpms+0x88/0x90() Alex Deucher <alexdeucher@gmail.com> - 2015-09-22 23:00 +0200
    Re: WARNING: CPU: 4 PID: 863 at include/drm/drm_crtc.h:1577  drm_helper_choose_encoder_dpms+0x88/0x90() Daniel Vetter <daniel@ffwll.ch> - 2015-09-23 09:30 +0200
      Re: WARNING: CPU: 4 PID: 863 at include/drm/drm_crtc.h:1577  drm_helper_choose_encoder_dpms+0x88/0x90() Borislav Petkov <bp@alien8.de> - 2015-09-23 11:10 +0200
        Re: WARNING: CPU: 4 PID: 863 at include/drm/drm_crtc.h:1577  drm_helper_choose_encoder_dpms+0x88/0x90() Daniel Vetter <daniel@ffwll.ch> - 2015-09-23 16:50 +0200
          Re: WARNING: CPU: 4 PID: 863 at include/drm/drm_crtc.h:1577  drm_helper_choose_encoder_dpms+0x88/0x90() Borislav Petkov <bp@alien8.de> - 2015-09-23 18:10 +0200
            Re: WARNING: CPU: 4 PID: 863 at include/drm/drm_crtc.h:1577  drm_helper_choose_encoder_dpms+0x88/0x90() Borislav Petkov <bp@alien8.de> - 2015-09-23 18:20 +0200
              Re: WARNING: CPU: 4 PID: 863 at include/drm/drm_crtc.h:1577  drm_helper_choose_encoder_dpms+0x88/0x90() - evildoer found and neutralized Borislav Petkov <bp@alien8.de> - 2015-09-26 18:50 +0200
                Re: WARNING: CPU: 4 PID: 863 at include/drm/drm_crtc.h:1577  drm_helper_choose_encoder_dpms+0x88/0x90() - evildoer found and neutralized Jiang Liu <jiang.liu@linux.intel.com> - 2015-09-29 11:00 +0200
                Re: WARNING: CPU: 4 PID: 863 at include/drm/drm_crtc.h:1577  drm_helper_choose_encoder_dpms+0x88/0x90() - evildoer found and neutralized Borislav Petkov <bp@alien8.de> - 2015-09-29 13:00 +0200
                Re: WARNING: CPU: 4 PID: 863 at include/drm/drm_crtc.h:1577  drm_helper_choose_encoder_dpms+0x88/0x90() - evildoer found and neutralized Jiang Liu <jiang.liu@linux.intel.com> - 2015-09-30 09:50 +0200
                Re: WARNING: CPU: 4 PID: 863 at include/drm/drm_crtc.h:1577  drm_helper_choose_encoder_dpms+0x88/0x90() - evildoer found and neutralized Joerg Roedel <joro@8bytes.org> - 2015-09-30 14:50 +0200
                Re: WARNING: CPU: 4 PID: 863 at include/drm/drm_crtc.h:1577  drm_helper_choose_encoder_dpms+0x88/0x90() - evildoer found and neutralized Jiang Liu <jiang.liu@linux.intel.com> - 2015-09-30 19:10 +0200
                Re: WARNING: CPU: 4 PID: 863 at include/drm/drm_crtc.h:1577  drm_helper_choose_encoder_dpms+0x88/0x90() - evildoer found and neutralized Borislav Petkov <bp@alien8.de> - 2015-09-30 19:40 +0200
                Re: WARNING: CPU: 4 PID: 863 at include/drm/drm_crtc.h:1577  drm_helper_choose_encoder_dpms+0x88/0x90() - evildoer found and neutralized Joerg Roedel <joro@8bytes.org> - 2015-09-30 20:10 +0200
                Re: WARNING: CPU: 4 PID: 863 at include/drm/drm_crtc.h:1577  drm_helper_choose_encoder_dpms+0x88/0x90() - evildoer found and neutralized Jiang Liu <jiang.liu@linux.intel.com> - 2015-10-03 09:40 +0200
                Re: WARNING: CPU: 4 PID: 863 at include/drm/drm_crtc.h:1577  drm_helper_choose_encoder_dpms+0x88/0x90() - evildoer found and neutralized Borislav Petkov <bp@alien8.de> - 2015-10-03 11:40 +0200
                Re: WARNING: CPU: 4 PID: 863 at include/drm/drm_crtc.h:1577  drm_helper_choose_encoder_dpms+0x88/0x90() - evildoer found and neutralized Joerg Roedel <joro@8bytes.org> - 2015-10-05 12:10 +0200
                Re: WARNING: CPU: 4 PID: 863 at include/drm/drm_crtc.h:1577  drm_helper_choose_encoder_dpms+0x88/0x90() - evildoer found and neutralized Joerg Roedel <joro@8bytes.org> - 2015-09-30 20:10 +0200

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