From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Wu Subject: Re: [PATCH 4/4] drm/nouveau/acpi: fix lockup with PCIe runtime PM Date: Mon, 30 May 2016 18:13:51 +0200 Message-ID: <20160530161351.GA1355@al> References: <1464130381-4797-1-git-send-email-peter@lekensteyn.nl> <1464130381-4797-5-git-send-email-peter@lekensteyn.nl> <20160525135535.GN1789@lahna.fi.intel.com> <20160527111037.GA1436@al> <20160530095709.GK1789@lahna.fi.intel.com> <20160530122010.GB1149@al> <20160530130909.GA1743@lahna.fi.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Content-Disposition: inline In-Reply-To: <20160530130909.GA1743-3PARRvDOhMZrdx17CPfAsdBPR1lH4CV8@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: nouveau-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org Sender: "Nouveau" To: Mika Westerberg Cc: linux-pm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-pci-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, "Rafael J. Wysocki" , dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, Bjorn Helgaas , nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, Dave Airlie List-Id: linux-pm@vger.kernel.org T24gTW9uLCBNYXkgMzAsIDIwMTYgYXQgMDQ6MDk6MDlQTSArMDMwMCwgTWlrYSBXZXN0ZXJiZXJn IHdyb3RlOgouLi4KPiA+ID4gPiA+ID4gKwo+ID4gPiA+ID4gPiArCWlmICghcGFyZW50X3BkZXYp Cj4gPiA+ID4gPiA+ICsJCXJldHVybiBmYWxzZTsKPiA+ID4gPiA+ID4gKwo+ID4gPiA+ID4gPiAr CWFkID0gQUNQSV9DT01QQU5JT04oJnBhcmVudF9wZGV2LT5kZXYpOwo+ID4gPiA+ID4gPiArCWlm ICghYWQpCj4gPiA+ID4gPiA+ICsJCXJldHVybiBmYWxzZTsKPiA+ID4gPiA+ID4gKwo+ID4gPiA+ ID4gPiArCXJldHVybiBhZC0+cG93ZXIuZmxhZ3MucG93ZXJfcmVzb3VyY2VzOwo+ID4gPiA+ID4g Cj4gPiA+ID4gPiBJcyB0aGlzIHN1ZmZpY2llbnQgdG8gdGVsbCBpZiB0aGUgcGFyZW50IGRldmlj ZSBoYXMgX1BSMz8gSSB0aG91Z2h0IGl0Cj4gPiA+ID4gPiByZXR1cm5zIHRydWUgaWYgaXQgaGFz IHBvd2VyIHJlc291cmNlcyBpbiBnZW5lcmFsLCBub3QgbmVjZXNzYXJpbHkgX1BSMy4KPiA+ID4g PiA+IAo+ID4gPiA+ID4gT3RoZXJ3aXNlIHRoaXMgbG9va3Mgb2theSB0byBtZS4KPiA+ID4gPiAK PiA+ID4gPiBJdCBpcyBpbmRlZWQgc2V0IHdoZW5ldmVyIHRoZXJlIGlzIGFueSBfUFJ4IG1ldGhv ZC4gSSB3b25kZXIgaWYgaXQgaXMKPiA+ID4gPiBhcHByb3ByaWF0ZSB0byBhY2Nlc3MgZmllbGRz IGRpcmVjdGx5IGxpa2UgdGhpcywgcGVyaGFwcyB0aGlzIHdvdWxkIGJlCj4gPiA+ID4gbW9yZSBh Y2N1cmF0ZSAoYmFzZWQgb24gZGV2aWNlX3BtLmMpOgo+ID4gPiA+IAo+ID4gPiA+ICAgICAvKiBD aGVjayB3aGV0aGVyIHRoZSBfUFIzIG1ldGhvZCBpcyBhdmFpbGFibGUuICovCj4gPiA+ID4gICAg IHJldHVybiBhZGV2LT5wb3dlci5zdGF0ZXNbQUNQSV9TVEFURV9EM19DT0xEXS5mbGFncy52YWxp ZDsKPiA+ID4gPiAKPiA+ID4gPiBJIGFtIGFsc28gY29uc2lkZXJpbmcgYWRkaW5nIGEgY2hlY2sg aW4gY2FzZSB0aGUgcGNpZXBvcnQgZHJpdmVyIGRvZXMKPiA+ID4gPiBub3Qgc3VwcG9ydCBEM2Nv bGQgdmlhIHJ1bnRpbWUgUE0sIHdoYXQgZG8geW91IHRoaW5rIG9mIHRoaXM/Cj4gPiA+ID4gCj4g PiA+ID4gICAgIGlmICghcGFyZW50X3BkZXYpCj4gPiA+ID4gICAgICAgICByZXR1cm4gZmFsc2U7 Cj4gPiA+ID4gICAgIC8qIElmIHRoZSBQQ0llIHBvcnQgZG9lcyBub3Qgc3VwcG9ydCBEM2NvbGQg dmlhIHJ1bnRpbWUgUE0sIGFsbG93IGEKPiA+ID4gPiAgICAgICogZmFsbGJhY2sgdG8gdGhlIE9w dGltdXMgRFNNIG1ldGhvZCB0byBwdXQgdGhlIGRldmljZSBpbiBEM2NvbGQuICovCj4gPiA+ID4g ICAgIGlmIChwYXJlbnRfcGRldi0+bm9fZDNjb2xkKQo+ID4gPiA+ICAgICAgICAgcmV0dXJuIGZh bHNlOwo+ID4gPiA+IAo+ID4gPiA+IFRoaXMgaXMgbmVlZGVkIHRvIGF2b2lkIHRoZSByZWdyZXNz aW9uIHJlcG9ydGVkIGluIHRoZSBjb3ZlciBsZXR0ZXIsIGJ1dAo+ID4gPiA+IGFsc28gYWxsb3dz IHByZS0yMDE1IHN5c3RlbXMgdG8gKHN0aWxsKSBoYXZlIHRoZSBEM2NvbGQgcG9zc2liaWxpdHku Cj4gPiA+IAo+ID4gPiBUaGUgX0RTTSBtZXRob2Qgd2l0aCAwIGFzIGluZGV4IHBhcmFtZXRlciBz aG91bGQgcmV0dXJuIGEgYml0IGZpZWxkCj4gPiA+IHRlbGxpbmcgd2hpY2ggZnVuY3Rpb25zIGFy ZSBzdXBwb3J0ZWQuIFNhbmUgQklPUyBkaXNhYmxlcyB0aGF0Cj4gPiA+IHBhcnRpY3VsYXIgZnVu Y3Rpb24gaWYgaXQgZGV0ZWN0cyBXaW5kb3dzIDggYW5kIG5ld2VyLiBIYXZlIHlvdSBjaGVja2Vk Cj4gPiA+IGlmIHRoYXQncyB0aGUgY2FzZT8KPiA+ID4gCj4gPiA+IFRoZW4geW91IGNhbiBjYWxs IF9EU00gb25seSBpZiBpdCBpcyBzdXBwb3J0ZWQgYW5kIG90aGVyd2lzZSBleHBlY3QgdGhlCj4g PiA+IHBhcmVudCBkZXZpY2UncyBwb3dlciByZXNvdXJjZXMgdG8gdHVybiBvZmYgcG93ZXIgd2hl biBydW50aW1lCj4gPiA+IHN1c3BlbmRlZC4KPiA+IAo+ID4gVGhlIF9EU00gbWV0aG9kcyAoZm9y IHRoZSBOdmlkaWEgZGV2aWNlKSBhcmUgb2Z0ZW4gc3RpbGwgaW5jbHVkZWQgYW5kCj4gPiBmdW5j dGlvbnMgYXJlIHJlcG9ydGVkIGFzIHN1cHBvcnRlZC4gSSBndWVzcyB0aGF0IHZlbmRvcnMganVz dCBjaGVjawo+ID4gd2hldGhlciBpdCBpcyB3b3JraW5nIGFuZCBkbyBub3QgYm90aGVyIHJlbW92 aW5nIGxlZ2FjeSBmdW5jdGlvbnMuIFRoZQo+ID4gQWNlciBjYXNlIGJlbG93IHNlZW1zIGV4Y2Vw dGlvbmFsLgo+ID4gCj4gPiBJIHN1Z2dlc3RlZCB0aGUgbm9fZDNjb2xkIGNoZWNrIHN1Y2ggdGhh dCBEU00gY2FuIHN0aWxsIGJlIGNhbGxlZCBldmVuCj4gPiB0aG91Z2ggdGhlIHJ1bnRpbWUgUE0g b24gdGhlIFBDSWUgcG9ydCBkb2VzIG5vdGhpbmcuCj4gCj4gU29tZWhvdyBpdCBkb2VzIG5vdCBm ZWVsIHJpZ2h0IHRvIHBva2UgcGFyZW50IGRldmljZSdzIGZpZWxkcyBkaXJlY3RseS4KPiAKPiBX aGF0IGlmIHlvdSBqdXN0IGNoZWNrIGlmIGl0IGhhcyB0aGUgbWV0aG9kIGxpa2U6Cj4gCj4gCWJv b2wgbm9fZHNtID0gYWNwaV9oYXNfbWV0aG9kKHBhcmVudF9hZGV2LT5oYW5kbGUsICJfUFIzIik7 Cj4gCj4gVGhhdCBzaG91bGQgZm9sbG93IHdoYXQgV2luZG93cyBpcyBkb2luZy4KCkNoZWNraW5n IGZvciBfUFIzIHdhcyB0aGUgaW50ZW50aW9uLCBidXQgaXQgc2VlbXMgdGhhdCB0aGUgQUNQSSBj b3JlCmRvZXMgbm90IHJlYWxseSBzdG9yZSBpdCBzb21ld2hlcmUuIFlvdXIgY2hlY2sgc2hvdWxk IGJlIHNpbXBsZSBlbm91Z2gsCkknbGwgdXNlIHRoYXQgaW4gdGhlIG5leHQgdmVyc2lvbi4KCkRv IHlvdSBoYXZlIGFueSBzdWdnZXN0aW9ucyBmb3IgdGhlIGNhc2Ugd2hlcmUgdGhlIHBjaWVwb3J0 IGRyaXZlcgpyZWZ1c2VzIHRvIHB1dCB0aGUgYnJpZGdlIGluIEQzIChiZWNhdXNlIHRoZSBCSU9T IGlzIHRvbyBvbGQpPyBJbiB0aGF0CmNhc2UgdGhlIG5vdXZlYXUgZHJpdmVyIG5lZWRzIHRvIGZh bGxiYWNrIHRvIHRoZSBEU00gbWV0aG9kIChidXQgbm90CndoZW4gcnVudGltZSBQTSBpcyBkZWxp YmVyYXRlbHkgZGlzYWJsZWQgYnkgd3JpdGluZyBjb250cm9sPW9uKS4KLS0gCktpbmQgcmVnYXJk cywKUGV0ZXIgV3UKaHR0cHM6Ly9sZWtlbnN0ZXluLm5sCl9fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fCk5vdXZlYXUgbWFpbGluZyBsaXN0Ck5vdXZlYXVAbGlz dHMuZnJlZWRlc2t0b3Aub3JnCmh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4v bGlzdGluZm8vbm91dmVhdQo=