From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jani Nikula Subject: Re: [PATCH] drm/i915: check if execlist_port is empty before using its content Date: Fri, 23 Dec 2016 09:04:57 +0200 Message-ID: <87h95vruqu.fsf@intel.com> References: <20161223054636.3924-1-changbin.du@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20161223054636.3924-1-changbin.du@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: changbin.du@intel.com, daniel.vetter@intel.com Cc: airlied@linux.ie, intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org T24gRnJpLCAyMyBEZWMgMjAxNiwgY2hhbmdiaW4uZHVAaW50ZWwuY29tIHdyb3RlOgo+IEZyb206 ICJEdSwgQ2hhbmdiaW4iIDxjaGFuZ2Jpbi5kdUBpbnRlbC5jb20+Cj4KPiBUaGlzIHBhdGNoIGZp eCBhIGNyYXNoIGluIGZ1bmN0aW9uIHJlc2V0X2NvbW1vbl9yaW5nLiBJbiB0aGlzIGNhc2UsCj4g dGhlIHBvcnRbMF0ucmVxdWVzdCBpcyBudWxsIHdoZW4gcmVzZXQgdGhlIHJlbmRlciByaW5nLCBz byBhIG51bGwKPiBkZXJlZmVyZW5jZSBleGNlcHRpb24gaXMgcmFpc2VkLiBXZSBuZWVkIHRvIGNo ZWNrIGV4ZWNsaXN0X3BvcnQgc3RhdHVzCj4gZmlyc3QuCj4KPiBbICAgMzUuNzQ4MDM0XSBCVUc6 IHVuYWJsZSB0byBoYW5kbGUga2VybmVsIE5VTEwgcG9pbnRlciBkZXJlZmVyZW5jZSBhdCAwMDAw MDAwMDAwMDAwMDcwCj4gWyAgIDM1Ljc0OTU2N10gSVA6IFs8ZmZmZmZmZmY4MTUyMWJmZT5dIHJl c2V0X2NvbW1vbl9yaW5nKzB4YmUvMHgxNTAKPiBbICAgMzUuNzQ5NTY3XSBDYWxsIFRyYWNlOgo+ IFsgICAzNS43NDk1NjddICBbPGZmZmZmZmZmODE1MGRlZDA+XSBpOTE1X2dlbV9yZXNldCsweDE1 MC8weDI3MAo+IFsgICAzNS43NDk1NjddICBbPGZmZmZmZmZmODE0ZDNjMGE+XSBpOTE1X3Jlc2V0 KzB4OGEvMHhlMAo+IFsgICAzNS43NDk1NjddICBbPGZmZmZmZmZmODE0ZDhjMjE+XSBpOTE1X3Jl c2V0X2FuZF93YWtldXArMHgxMzEvMHgxNjAKPiBbICAgMzUuNzQ5NTY3XSAgWzxmZmZmZmZmZjgx NTI5OGYwPl0gPyBnZW41X3JlYWQ4KzB4MTEwLzB4MTEwCj4gWyAgIDM1Ljc0OTU2N10gIFs8ZmZm ZmZmZmY4MTRkYzk3YT5dIGk5MTVfaGFuZGxlX2Vycm9yKzB4Y2EvMHg1YTAKPiBbICAgMzUuNzQ5 NTY3XSAgWzxmZmZmZmZmZjgxM2JhYzlkPl0gPyBzY25wcmludGYrMHgzZC8weDcwCj4gWyAgIDM1 Ljc0OTU2N10gIFs8ZmZmZmZmZmY4MTRkZDA2Mz5dIGk5MTVfaGFuZ2NoZWNrX2VsYXBzZWQrMHgy MTMvMHg1MTAKPiBbICAgMzUuNzQ5NTY3XSAgWzxmZmZmZmZmZjgxMGM0YzRiPl0gcHJvY2Vzc19v bmVfd29yaysweDE1Yi8weDQ3MAo+IFsgICAzNS43NDk1NjddICBbPGZmZmZmZmZmODEwYzRmYTM+ XSB3b3JrZXJfdGhyZWFkKzB4NDMvMHg0ZDAKPiBbICAgMzUuNzQ5NTY3XSAgWzxmZmZmZmZmZjgx MGM0ZjYwPl0gPyBwcm9jZXNzX29uZV93b3JrKzB4NDcwLzB4NDcwCj4gWyAgIDM1Ljc0OTU2N10g IFs8ZmZmZmZmZmY4MTBjNGY2MD5dID8gcHJvY2Vzc19vbmVfd29yaysweDQ3MC8weDQ3MAo+IFsg ICAzNS43NDk1NjddICBbPGZmZmZmZmZmODEwYzEwM2U+XSA/IGNhbGxfdXNlcm1vZGVoZWxwZXJf ZXhlY19hc3luYysweDEyZS8weDEzMAo+IFsgICAzNS43NDk1NjddICBbPGZmZmZmZmZmODEwY2Ex YTU+XSBrdGhyZWFkKzB4YzUvMHhlMAo+IFsgICAzNS43NDk1NjddICBbPGZmZmZmZmZmODEwY2Ew ZTA+XSA/IGt0aHJlYWRfcGFyaysweDYwLzB4NjAKPiBbICAgMzUuNzQ5NTY3XSAgWzxmZmZmZmZm ZjgxMGMwZjEwPl0gPyB1bWhfY29tcGxldGUrMHg0MC8weDQwCj4gWyAgIDM1Ljc0OTU2N10gIFs8 ZmZmZmZmZmY4MWEzNTM5Mj5dIHJldF9mcm9tX2ZvcmsrMHgyMi8weDMwCj4KCkZpeGVzOiA/Cgpp LmUuIHdoaWNoIGNvbW1pdCBicm9rZSB0aGluZ3M/CgpCUiwKSmFuaS4KCgo+IFNpZ25lZC1vZmYt Ynk6IENoYW5nYmluIER1IDxjaGFuZ2Jpbi5kdUBpbnRlbC5jb20+Cj4gLS0tCj4gIGRyaXZlcnMv Z3B1L2RybS9pOTE1L2ludGVsX2xyYy5jIHwgMiArLQo+ICAxIGZpbGUgY2hhbmdlZCwgMSBpbnNl cnRpb24oKyksIDEgZGVsZXRpb24oLSkKPgo+IGRpZmYgLS1naXQgYS9kcml2ZXJzL2dwdS9kcm0v aTkxNS9pbnRlbF9scmMuYyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2xyYy5jCj4gaW5k ZXggMGEwOTAyNC4uODFhOWIwYiAxMDA2NDQKPiAtLS0gYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9p bnRlbF9scmMuYwo+ICsrKyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2xyYy5jCj4gQEAg LTE0NTAsNyArMTQ1MCw3IEBAIHN0YXRpYyB2b2lkIHJlc2V0X2NvbW1vbl9yaW5nKHN0cnVjdCBp bnRlbF9lbmdpbmVfY3MgKmVuZ2luZSwKPiAgCj4gIAkvKiBDYXRjaCB1cCB3aXRoIGFueSBtaXNz ZWQgY29udGV4dC1zd2l0Y2ggaW50ZXJydXB0cyAqLwo+ICAJSTkxNV9XUklURShSSU5HX0NPTlRF WFRfU1RBVFVTX1BUUihlbmdpbmUpLCBfTUFTS0VEX0ZJRUxEKDB4ZmZmZiwgMCkpOwo+IC0JaWYg KHJlcXVlc3QtPmN0eCAhPSBwb3J0WzBdLnJlcXVlc3QtPmN0eCkgewo+ICsJaWYgKCFleGVjbGlz dHNfZWxzcF9pZGxlKGVuZ2luZSkgJiYgcmVxdWVzdC0+Y3R4ICE9IHBvcnRbMF0ucmVxdWVzdC0+ Y3R4KSB7Cj4gIAkJaTkxNV9nZW1fcmVxdWVzdF9wdXQocG9ydFswXS5yZXF1ZXN0KTsKPiAgCQlw b3J0WzBdID0gcG9ydFsxXTsKPiAgCQltZW1zZXQoJnBvcnRbMV0sIDAsIHNpemVvZihwb3J0WzFd KSk7CgotLSAKSmFuaSBOaWt1bGEsIEludGVsIE9wZW4gU291cmNlIFRlY2hub2xvZ3kgQ2VudGVy Cl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCkludGVsLWdm eCBtYWlsaW5nIGxpc3QKSW50ZWwtZ2Z4QGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwczovL2xp c3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2ludGVsLWdmeAo=