From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ville =?iso-8859-1?Q?Syrj=E4l=E4?= Subject: Re: [PATCH] drm/i915: Avoid divide by zero Date: Wed, 23 Jan 2019 20:32:49 +0200 Message-ID: <20190123183249.GE20097@intel.com> References: <20190122125824.30719-1-mika.kahola@intel.com> <20190122162326.GX20097@intel.com> <87y37cef8b.fsf@intel.com> <20190122190925.GZ20097@intel.com> <1065a46a44d98e0d3f6425b1b79ad96a88aceec8.camel@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) by gabe.freedesktop.org (Postfix) with ESMTPS id B76526E52C for ; Wed, 23 Jan 2019 18:32:52 +0000 (UTC) Content-Disposition: inline In-Reply-To: <1065a46a44d98e0d3f6425b1b79ad96a88aceec8.camel@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: "Kahola, Mika" Cc: "intel-gfx@lists.freedesktop.org" List-Id: intel-gfx@lists.freedesktop.org T24gV2VkLCBKYW4gMjMsIDIwMTkgYXQgMDc6MjE6NTdBTSArMDAwMCwgS2Fob2xhLCBNaWthIHdy b3RlOgo+IE9uIFR1ZSwgMjAxOS0wMS0yMiBhdCAyMTowOSArMDIwMCwgVmlsbGUgU3lyasOkbMOk IHdyb3RlOgo+ID4gT24gVHVlLCBKYW4gMjIsIDIwMTkgYXQgMDg6MDk6NDBQTSArMDIwMCwgSmFu aSBOaWt1bGEgd3JvdGU6Cj4gPiA+IE9uIFR1ZSwgMjIgSmFuIDIwMTksIFZpbGxlIFN5cmrDpGzD pCA8dmlsbGUuc3lyamFsYUBsaW51eC5pbnRlbC5jb20+Cj4gPiA+IHdyb3RlOgo+ID4gPiA+IE9u IFR1ZSwgSmFuIDIyLCAyMDE5IGF0IDAyOjU4OjI0UE0gKzAyMDAsIE1pa2EgS2Fob2xhIHdyb3Rl Ogo+ID4gPiA+ID4gQXZvaWQgZGl2aWRlIGJ5IHplcm8gd2FybmluZyBvbiBzdGF0aWMgYW5hbHlz aXMuCj4gPiA+ID4gPiAKPiA+ID4gPiA+IFNpZ25lZC1vZmYtYnk6IE1pa2EgS2Fob2xhIDxtaWth LmthaG9sYUBpbnRlbC5jb20+Cj4gPiA+ID4gPiAtLS0KPiA+ID4gPiA+ICBkcml2ZXJzL2dwdS9k cm0vaTkxNS9pbnRlbF9wbS5jIHwgNiArKysrLS0KPiA+ID4gPiA+ICAxIGZpbGUgY2hhbmdlZCwg NCBpbnNlcnRpb25zKCspLCAyIGRlbGV0aW9ucygtKQo+ID4gPiA+ID4gCj4gPiA+ID4gPiBkaWZm IC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfcG0uYwo+ID4gPiA+ID4gYi9kcml2 ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9wbS5jCj4gPiA+ID4gPiBpbmRleCA4YjYzYWZhM2EyMjEu LjZhOGU4YjNmNDRjMiAxMDA2NDQKPiA+ID4gPiA+IC0tLSBhL2RyaXZlcnMvZ3B1L2RybS9pOTE1 L2ludGVsX3BtLmMKPiA+ID4gPiA+ICsrKyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX3Bt LmMKPiA+ID4gPiA+IEBAIC0zOTEyLDggKzM5MTIsMTAgQEAKPiA+ID4gPiA+IHNrbF9kZGJfZ2V0 X3BpcGVfYWxsb2NhdGlvbl9saW1pdHMoc3RydWN0IGRybV9pOTE1X3ByaXZhdGUKPiA+ID4gPiA+ ICpkZXZfcHJpdiwKPiA+ID4gPiA+ICAJCQlwaXBlX3dpZHRoID0gaGRpc3BsYXk7Cj4gPiA+ID4g PiAgCX0KPiA+ID4gPiA+ICAKPiA+ID4gPiA+IC0JYWxsb2MtPnN0YXJ0ID0gZGRiX3NpemUgKiB3 aWR0aF9iZWZvcmVfcGlwZSAvCj4gPiA+ID4gPiB0b3RhbF93aWR0aDsKPiA+ID4gPiA+IC0JYWxs b2MtPmVuZCA9IGRkYl9zaXplICogKHdpZHRoX2JlZm9yZV9waXBlICsKPiA+ID4gPiA+IHBpcGVf d2lkdGgpIC8gdG90YWxfd2lkdGg7Cj4gPiA+ID4gPiArCWFsbG9jLT5zdGFydCA9IHRvdGFsX3dp ZHRoID09IDAgPwo+ID4gPiA+ID4gKwkJMCA6IGRkYl9zaXplICogd2lkdGhfYmVmb3JlX3BpcGUg LyB0b3RhbF93aWR0aDsKPiA+ID4gPiA+ICsJYWxsb2MtPmVuZCA9IHRvdGFsX3dpZHRoID09IDAg Pwo+ID4gPiA+ID4gKwkJMCA6IGRkYl9zaXplICogKHdpZHRoX2JlZm9yZV9waXBlICsgcGlwZV93 aWR0aCkKPiA+ID4gPiA+IC8gdG90YWxfd2lkdGg7Cj4gPiA+ID4gCj4gPiA+ID4gQ2FuJ3QgaGFw cGVuLgo+IEknZCBzYXkgaXQncyB2ZXJ5IHVubGlrZWx5IHRvIGhhcHBlbiBidXQgaW4gdGhlb3J5 IHBvc3NpYmxlLiBJZiB3ZQo+IGRvbid0IGhhdmUgYW55IGNydGNfc3RhdGUgZW5hYmxlZCB3ZSBl bmQgdXAgaGF2aW5nIHRvdGFsX3dpZHRoID0gMC4gSW4KPiB0aGlzIGNhc2UgaXQgcHJvYmFibHkg d29uJ3QgbWF0dGVyIHdoYXQgbnVtYmVycyB3ZSBlbmQgdXAgd2l0aCBhbGxvYy0KPiA+c3RhcnQg YW5kIGFsbG9jLT5lbmQuCgpUaGUgY2FsbGVyIGJhaWxzIG91dCBlYXJseSBpbiB0aGF0IGNhc2U6 CgppZiAoIWNzdGF0ZS0+YmFzZS5hY3RpdmUpIHsKCWFsbG9jLT5zdGFydCA9IGFsbG9jLT5lbmQg PSAwOwoJcmV0dXJuIDA7Cn0KCj4gCj4gQW55d2F5LCB0aGlzIHdhcyBzb21ldGhpbmcgdGhhdCBj YXVnaHQgbXkgZXllIHdoaWxlIGxvb2tpbmcgaW50byBjcmMKPiBtaXNtYXRjaCBlcnJvcnMgYW5k IHN0YXRpYyBjaGVja2VyIHJlc3VsdHMuCj4gCj4gTGlrZSBKYW5pIHNhaWQsIHdhcm4gaXMgc3Vm ZmljaWVudCB3aXRoIHRoaXMgY2FzZS4KPiAKPiBDaGVlcnMsCj4gTWlrYQo+IAo+ID4gPiAKPiA+ ID4gWWVhaCwgaXQncyBhYm91dCBzdGZ1IHRoZSBjaGVja2VyLi4uCj4gPiAKPiA+IEZlZWxzIGxp a2UgdGhlIHRpcCBvZiBhbiBpY2ViZXJnLiBIb3cgbWFueSBtb3JlIHVnbGllcyBhcmUgd2UgZ29p bmcKPiA+IHRvCj4gPiBoYXZlIHRvIGFkZD8KPiA+IAo+ID4gPiAKPiA+ID4gPiAKPiA+ID4gPiA+ ICB9Cj4gPiA+ID4gPiAgCj4gPiA+ID4gPiAgc3RhdGljIHVuc2lnbmVkIGludCBza2xfY3Vyc29y X2FsbG9jYXRpb24oaW50IG51bV9hY3RpdmUpCj4gPiA+ID4gPiAtLSAKPiA+ID4gPiA+IDIuMTcu MQo+ID4gPiA+ID4gCj4gPiA+ID4gPiBfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fXwo+ID4gPiA+ID4gSW50ZWwtZ2Z4IG1haWxpbmcgbGlzdAo+ID4gPiA+ID4g SW50ZWwtZ2Z4QGxpc3RzLmZyZWVkZXNrdG9wLm9yZwo+ID4gPiA+ID4gaHR0cHM6Ly9saXN0cy5m cmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9pbnRlbC1nZngKPiA+ID4gCj4gPiA+IC0t IAo+ID4gPiBKYW5pIE5pa3VsYSwgSW50ZWwgT3BlbiBTb3VyY2UgR3JhcGhpY3MgQ2VudGVyCj4g PiAKPiA+IAoKLS0gClZpbGxlIFN5cmrDpGzDpApJbnRlbApfX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fXwpJbnRlbC1nZnggbWFpbGluZyBsaXN0CkludGVsLWdm eEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFp bG1hbi9saXN0aW5mby9pbnRlbC1nZngK