linux-kernel - Re: [git pull] drm for rc1

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Date:	Thu, 13 Jan 2011 21:53:55 +0200
From:	Anca Emanuel <anca.emanuel@...il.com>
To:	James Simmons <jsimmons@...radead.org>
Cc:	Christian Borntraeger <borntraeger@...ibm.com>,
	Dave Airlie <airlied@...ux.ie>,
	DRI mailing list <dri-devel@...ts.freedesktop.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [git pull] drm for rc1

On Thu, Jan 13, 2011 at 7:55 PM, James Simmons <jsimmons@...radead.org> wrote:
>
>> > > With your patch, I can boot the system. But nouveau is not loaded.
>> > > dmesg attached.
>> > >
>> >
>> > Forget to mention: the revert makes first steps of boot look the same
>> > (change the resolution of the text)
>> > but with your patch, I see a big ugly ununtu logo, (I think that is
>> > because nouveau is not loaded)
>
> Okay, can you do one more experiment for me. Since you already reverted
> the patch to get it booting I like to ask you to add
>
> drm_fb_helper_fill_fix(info, fb_helper->fb);
>
> back into the drm_fb_helper_set_par function in drm_fb_helper.c. You have
> something like this:
>
>        mutex_lock(&dev->mode_config.mutex);
>        for (i = 0; i < fb_helper->crtc_count; i++) {
>                crtc = fb_helper->crtc_info[i].mode_set.crtc;
>                ret = crtc->funcs->set_config(&fb_helper->crtc_info[i].mode_set);
>                if (ret) {
>                        mutex_unlock(&dev->mode_config.mutex);
>                        return ret;
>                }
>                drm_fb_helper_fill_fix(info, fb_helper->fb);
>        }
>        mutex_unlock(&dev->mode_config.mutex);
>
> Tell me if your system is still usable after that. Thanks for testing for
> me.
>

after

git revert dfe63bb0ad9810db13aab0058caba97866e0a681

and


diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index 5c4f9b9..2aad663 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -816,6 +816,7 @@ int drm_fb_helper_set_par(struct fb_info *info)
                        mutex_unlock(&dev->mode_config.mutex);
                        return ret;
                }
+               drm_fb_helper_fill_fix(info, fb_helper->fb->pitch, fb_helper->fb
        }
        mutex_unlock(&dev->mode_config.mutex);

I get an working system. ( the boot screen is not ok )
Tested suspend/resume. Dmesg attached.

View attachment "dmesg-ok.txt" of type "text/plain" (124466 bytes)