From mboxrd@z Thu Jan  1 00:00:00 1970
From: Luis Henriques <luis.henriques@canonical.com>
Subject: Re: [PATCH 3.16.y-ckt 030/168] drm/i915: Handle failure
 to kick out a conflicting fb driver
Date: Mon, 12 Jan 2015 17:43:34 +0000
Message-ID: <20150112174334.GI2455@charon>
References: <1418653622-21105-1-git-send-email-luis.henriques@canonical.com>
 <1418653622-21105-31-git-send-email-luis.henriques@canonical.com>
 <1421012945.19708.27.camel@decadent.org.uk>
 <CAKMK7uFDS339qaqaNeRJ-L+XXKBaS8CgDY1CzEB7ugDmOto+Dw@mail.gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <intel-gfx-bounces@lists.freedesktop.org>
Received: from youngberry.canonical.com (youngberry.canonical.com
 [91.189.89.112])
 by gabe.freedesktop.org (Postfix) with ESMTP id 2B2D56E389
 for <intel-gfx@lists.freedesktop.org>; Mon, 12 Jan 2015 09:43:16 -0800 (PST)
Content-Disposition: inline
In-Reply-To: <CAKMK7uFDS339qaqaNeRJ-L+XXKBaS8CgDY1CzEB7ugDmOto+Dw@mail.gmail.com>
List-Unsubscribe: <http://lists.freedesktop.org/mailman/options/intel-gfx>,
 <mailto:intel-gfx-request@lists.freedesktop.org?subject=unsubscribe>
List-Archive: <http://lists.freedesktop.org/archives/intel-gfx>
List-Post: <mailto:intel-gfx@lists.freedesktop.org>
List-Help: <mailto:intel-gfx-request@lists.freedesktop.org?subject=help>
List-Subscribe: <http://lists.freedesktop.org/mailman/listinfo/intel-gfx>,
 <mailto:intel-gfx-request@lists.freedesktop.org?subject=subscribe>
Errors-To: intel-gfx-bounces@lists.freedesktop.org
Sender: "Intel-gfx" <intel-gfx-bounces@lists.freedesktop.org>
To: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>, intel-gfx <intel-gfx@lists.freedesktop.org>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>, stable <stable@vger.kernel.org>, kernel-team@lists.ubuntu.com, Ben Hutchings <ben@decadent.org.uk>
List-Id: intel-gfx@lists.freedesktop.org

T24gTW9uLCBKYW4gMTIsIDIwMTUgYXQgMDY6MjA6MjJQTSArMDEwMCwgRGFuaWVsIFZldHRlciB3
cm90ZToKPiBPbiBTdW4sIEphbiAxMSwgMjAxNSBhdCAxMDo0OSBQTSwgQmVuIEh1dGNoaW5ncyA8
YmVuQGRlY2FkZW50Lm9yZy51az4gd3JvdGU6Cj4gPiBPbiBNb24sIDIwMTQtMTItMTUgYXQgMTQ6
MjQgKzAwMDAsIEx1aXMgSGVucmlxdWVzIHdyb3RlOgo+ID4+IDMuMTYuNy1ja3QzIC1zdGFibGUg
cmV2aWV3IHBhdGNoLiAgSWYgYW55b25lIGhhcyBhbnkgb2JqZWN0aW9ucywgcGxlYXNlIGxldCBt
ZSBrbm93Lgo+ID4+Cj4gPj4gLS0tLS0tLS0tLS0tLS0tLS0tCj4gPj4KPiA+PiBGcm9tOiBDaHJp
cyBXaWxzb24gPGNocmlzQGNocmlzLXdpbHNvbi5jby51az4KPiA+Pgo+ID4+IGNvbW1pdCBmOTZk
ZTU4ZmM3ZTdkM2Q3MTdjN2M2Mzk3NWMzYjg5NmM5MDZiNWUzIHVwc3RyZWFtLgo+ID4+Cj4gPj4g
U2lnbmVkLW9mZi1ieTogQ2hyaXMgV2lsc29uIDxjaHJpc0BjaHJpcy13aWxzb24uY28udWs+Cj4g
Pj4gUmV2aWV3ZWQtYnk6IEphbmkgTmlrdWxhIDxqYW5pLm5pa3VsYUBpbnRlbC5jb20+Cj4gPj4g
U2lnbmVkLW9mZi1ieTogRGFuaWVsIFZldHRlciA8ZGFuaWVsLnZldHRlckBmZndsbC5jaD4KPiA+
PiBTaWduZWQtb2ZmLWJ5OiBMdWlzIEhlbnJpcXVlcyA8bHVpcy5oZW5yaXF1ZXNAY2Fub25pY2Fs
LmNvbT4KPiA+Cj4gPiBTaG91bGQgdGhpcyBhbHNvIGJlIGFwcGxpZWQgdG8gYW55IG9sZGVyIHN0
YWJsZSBicmFuY2hlcz8KPiA+Cj4gPiBpOTE1X2tpY2tfb3V0X2Zpcm13YXJlX2ZiKCkgd2FzIGlu
dHJvZHVjZWQgaW4gMy42IGFuZCBpdCBoYXMgYWx3YXlzIGJlZW4KPiA+IHBvc3NpYmxlIGZvciB0
aGUgYWxsb2NfYXBlcnR1cmVzKCkgY2FsbCB0byBmYWlsLgo+ID4KPiA+IHJlbW92ZV9jb25mbGlj
dGluZ19mcmFtZWJ1ZmZlcnMoKSBoYXMgcmV0dXJuZWQgYW4gZXJyb3IgY29kZSBzaW5jZSAzLjE0
Cj4gPiAoYnV0IGNvdWxkIHNpbGVudGx5IGZhaWwgYmVmb3JlIHRoZW4hKSBzbyB0aGlzIHNob3Vs
ZCBiZSBhcHBsaWNhYmxlIHRvCj4gPiB0aGUgMy4xNCBzdGFibGUgYnJhbmNoIHRvby4KPiAKPiB0
YmggSSBkb24ndCBrbm93IHdoeSB0aGlzIHBhdGNoIGVuZGVkIHVwIGluIGEgc3RhYmxlIGtlcm5l
bCwgYXQgbGVhc3QKPiBJIGRpZG4ndCBmaW5kIGFueXRoaW5nIHdoZXJlIHdlIChkcm0vaTkxNSBt
YWludGFpbmVycykgbWFya2VkIGl0IGFzCj4gc3VjaC4gQW5kIHRoZXJlJ3Mgbm8gYnVnemlsbGEg
cmVmZXJlbmNlcyBhZGRlZCBlaXRoZXIuIEltbyB0aGUgcGF0Y2gKPiBkb2Vzbid0IHF1YWxpZnkg
Zm9yIHN0YWJsZSAoaXQncyBub3QgYSByZWFsLXdvcmxkIGJ1ZyBhZmFpaykuCgpZb3UncmUgcmln
aHQsIHRoaXMgcGF0Y2ggd2FzIG5vdCB0YWdnZWQgZm9yIHN0YWJsZS4KCldoaWxlIGFwcGx5aW5n
IDA0ODVjOWRjMjRlYyAoImRybS9pOTE1OiBLaWNrIGZiZGV2IGJlZm9yZSB2Z2Fjb24iKSB0bwp0
aGUgMy4xNiBrZXJuZWwsIEkgZm91bmQgdGhhdCBjaGVycnktcGlja2luZyBmOTZkZTU4ZmM3ZTcg
d291bGQgbWFrZQppdCBhcHBseSBjbGVhbmx5IGFuZCBpdCBkaWRuJ3Qgc2hvY2sgbWUgdG8gaGF2
ZSBpdCBpbiBhIHN0YWJsZSBrZXJuZWwuClRoYXQncyB3aHkgSSBhcHBsaWVkIGl0IGZvciByZWxl
YXNlIDMuMTYuNy1ja3QzLiAgSSBndWVzcyBJIHNob3VsZApoYXZlIGFkZGVkIGEgbm90ZSBpbiB0
aGUgY29tbWl0IHRleHQganVzdGlmeWluZyBpdHMgcHJlc2VuY2UuCgpDaGVlcnMsCi0tCkx1w61z
Cgo+IC1EYW5pZWwKPiAKPiA+Cj4gPiBCZW4uCj4gPgo+ID4+IC0tLQo+ID4+ICBkcml2ZXJzL2dw
dS9kcm0vaTkxNS9pOTE1X2RtYS5jIHwgMTggKysrKysrKysrKysrKy0tLS0tCj4gPj4gIDEgZmls
ZSBjaGFuZ2VkLCAxMyBpbnNlcnRpb25zKCspLCA1IGRlbGV0aW9ucygtKQo+ID4+Cj4gPj4gZGlm
ZiAtLWdpdCBhL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfZG1hLmMgYi9kcml2ZXJzL2dwdS9k
cm0vaTkxNS9pOTE1X2RtYS5jCj4gPj4gaW5kZXggZDQ0MzQ0MTQwNjI3Li4wNjYzZmI0ZmE2MDYg
MTAwNjQ0Cj4gPj4gLS0tIGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaTkxNV9kbWEuYwo+ID4+ICsr
KyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2k5MTVfZG1hLmMKPiA+PiBAQCAtMTQyNSwxNSArMTQy
NSwxNiBAQCB2b2lkIGk5MTVfbWFzdGVyX2Rlc3Ryb3koc3RydWN0IGRybV9kZXZpY2UgKmRldiwg
c3RydWN0IGRybV9tYXN0ZXIgKm1hc3RlcikKPiA+PiAgfQo+ID4+Cj4gPj4gICNpZiBJU19FTkFC
TEVEKENPTkZJR19GQikKPiA+PiAtc3RhdGljIHZvaWQgaTkxNV9raWNrX291dF9maXJtd2FyZV9m
YihzdHJ1Y3QgZHJtX2k5MTVfcHJpdmF0ZSAqZGV2X3ByaXYpCj4gPj4gK3N0YXRpYyBpbnQgaTkx
NV9raWNrX291dF9maXJtd2FyZV9mYihzdHJ1Y3QgZHJtX2k5MTVfcHJpdmF0ZSAqZGV2X3ByaXYp
Cj4gPj4gIHsKPiA+PiAgICAgICBzdHJ1Y3QgYXBlcnR1cmVzX3N0cnVjdCAqYXA7Cj4gPj4gICAg
ICAgc3RydWN0IHBjaV9kZXYgKnBkZXYgPSBkZXZfcHJpdi0+ZGV2LT5wZGV2Owo+ID4+ICAgICAg
IGJvb2wgcHJpbWFyeTsKPiA+PiArICAgICBpbnQgcmV0Owo+ID4+Cj4gPj4gICAgICAgYXAgPSBh
bGxvY19hcGVydHVyZXMoMSk7Cj4gPj4gICAgICAgaWYgKCFhcCkKPiA+PiAtICAgICAgICAgICAg
IHJldHVybjsKPiA+PiArICAgICAgICAgICAgIHJldHVybiAtRU5PTUVNOwo+ID4+Cj4gPj4gICAg
ICAgYXAtPnJhbmdlc1swXS5iYXNlID0gZGV2X3ByaXYtPmd0dC5tYXBwYWJsZV9iYXNlOwo+ID4+
ICAgICAgIGFwLT5yYW5nZXNbMF0uc2l6ZSA9IGRldl9wcml2LT5ndHQubWFwcGFibGVfZW5kOwo+
ID4+IEBAIC0xNDQxLDEzICsxNDQyLDE2IEBAIHN0YXRpYyB2b2lkIGk5MTVfa2lja19vdXRfZmly
bXdhcmVfZmIoc3RydWN0IGRybV9pOTE1X3ByaXZhdGUgKmRldl9wcml2KQo+ID4+ICAgICAgIHBy
aW1hcnkgPQo+ID4+ICAgICAgICAgICAgICAgcGRldi0+cmVzb3VyY2VbUENJX1JPTV9SRVNPVVJD
RV0uZmxhZ3MgJiBJT1JFU09VUkNFX1JPTV9TSEFET1c7Cj4gPj4KPiA+PiAtICAgICByZW1vdmVf
Y29uZmxpY3RpbmdfZnJhbWVidWZmZXJzKGFwLCAiaW50ZWxkcm1mYiIsIHByaW1hcnkpOwo+ID4+
ICsgICAgIHJldCA9IHJlbW92ZV9jb25mbGljdGluZ19mcmFtZWJ1ZmZlcnMoYXAsICJpbnRlbGRy
bWZiIiwgcHJpbWFyeSk7Cj4gPj4KPiA+PiAgICAgICBrZnJlZShhcCk7Cj4gPj4gKwo+ID4+ICsg
ICAgIHJldHVybiByZXQ7Cj4gPj4gIH0KPiA+PiAgI2Vsc2UKPiA+PiAtc3RhdGljIHZvaWQgaTkx
NV9raWNrX291dF9maXJtd2FyZV9mYihzdHJ1Y3QgZHJtX2k5MTVfcHJpdmF0ZSAqZGV2X3ByaXYp
Cj4gPj4gK3N0YXRpYyBpbnQgaTkxNV9raWNrX291dF9maXJtd2FyZV9mYihzdHJ1Y3QgZHJtX2k5
MTVfcHJpdmF0ZSAqZGV2X3ByaXYpCj4gPj4gIHsKPiA+PiArICAgICByZXR1cm4gMDsKPiA+PiAg
fQo+ID4+ICAjZW5kaWYKPiA+Pgo+ID4+IEBAIC0xNjY0LDcgKzE2NjgsMTEgQEAgaW50IGk5MTVf
ZHJpdmVyX2xvYWQoc3RydWN0IGRybV9kZXZpY2UgKmRldiwgdW5zaWduZWQgbG9uZyBmbGFncykK
PiA+PiAgICAgICAgICAgICAgICAgICAgICAgZ290byBvdXRfZ3R0Owo+ID4+ICAgICAgICAgICAg
ICAgfQo+ID4+Cj4gPj4gLSAgICAgICAgICAgICBpOTE1X2tpY2tfb3V0X2Zpcm13YXJlX2ZiKGRl
dl9wcml2KTsKPiA+PiArICAgICAgICAgICAgIHJldCA9IGk5MTVfa2lja19vdXRfZmlybXdhcmVf
ZmIoZGV2X3ByaXYpOwo+ID4+ICsgICAgICAgICAgICAgaWYgKHJldCkgewo+ID4+ICsgICAgICAg
ICAgICAgICAgICAgICBEUk1fRVJST1IoImZhaWxlZCB0byByZW1vdmUgY29uZmxpY3RpbmcgZnJh
bWVidWZmZXIgZHJpdmVyc1xuIik7Cj4gPj4gKyAgICAgICAgICAgICAgICAgICAgIGdvdG8gb3V0
X2d0dDsKPiA+PiArICAgICAgICAgICAgIH0KPiA+PiAgICAgICB9Cj4gPj4KPiA+PiAgICAgICBw
Y2lfc2V0X21hc3RlcihkZXYtPnBkZXYpOwo+ID4KPiA+IC0tCj4gPiBCZW4gSHV0Y2hpbmdzCj4g
PiBPbmUgb2YgdGhlIG5pY2UgdGhpbmdzIGFib3V0IHN0YW5kYXJkcyBpcyB0aGF0IHRoZXJlIGFy
ZSBzbyBtYW55IG9mIHRoZW0uCj4gCj4gCj4gCj4gLS0gCj4gRGFuaWVsIFZldHRlcgo+IFNvZnR3
YXJlIEVuZ2luZWVyLCBJbnRlbCBDb3Jwb3JhdGlvbgo+ICs0MSAoMCkgNzkgMzY1IDU3IDQ4IC0g
aHR0cDovL2Jsb2cuZmZ3bGwuY2gKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f
X19fX19fX19fX18KSW50ZWwtZ2Z4IG1haWxpbmcgbGlzdApJbnRlbC1nZnhAbGlzdHMuZnJlZWRl
c2t0b3Aub3JnCmh0dHA6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9p
bnRlbC1nZngK