From mboxrd@z Thu Jan 1 00:00:00 1970 From: ville.syrjala@linux.intel.com Subject: [PATCH] drm/i915: Avoid div-by-zero when pixel_multiplier is zero Date: Mon, 9 Jun 2014 16:20:46 +0300 Message-ID: <1402320046-13069-1-git-send-email-ville.syrjala@linux.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by gabe.freedesktop.org (Postfix) with ESMTP id A6E6A6E551 for ; Mon, 9 Jun 2014 06:20:50 -0700 (PDT) List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: intel-gfx@lists.freedesktop.org Cc: stable@vger.kernel.org List-Id: intel-gfx@lists.freedesktop.org RnJvbTogVmlsbGUgU3lyasOkbMOkIDx2aWxsZS5zeXJqYWxhQGxpbnV4LmludGVsLmNvbT4KCk9u IGNlcnRhaW4gcGxhdGZvcm1zIHBpeGVsX211bHRpcGxpZXIgaXMgcmVhZCBvdXQgaW4KLmdldF9w aXBlX2NvbmZpZygpLCBidXQgaXQgYWxzbyBnZXRzIHVzZWQgdG8gY2FsY3VsYXRlIHRoZQpwaXhl bCBjbG9jayBpbiBpbnRlbF9zZHZvX2dldF9jb25maWcoKS4gSWYgdGhlIHBpcGUgaXMgZGlzYWJs ZQpidXQgc29tZSBTRFZPIG91dHB1dHMgYXJlIGFjdGl2ZSwgd2UgbWF5IGVuZCB1cCBkaXZpZGlu ZyBieSB6ZXJvCmluIGludGVsX3Nkdm9fZ2V0X2NvbmZpZygpLgoKVG8gYXZvaWQgdGhlIHByb2Js ZW0gc2ltcGx5IGNoZWNrIGZvciB6ZXJvIHBpeGVsX211bHRpcGxpZXIgYW5kIHNraXAKdGhlIGRp dmlzaW9uLiBBbm90aGVyIGF0dGVtcHQgYXQgZml4aW5nIHRoaXMgaW52b2x2ZWQgcG9wdWxhdGlu ZwpwaXhlbF9tdWx0aXBsaWVyIHRvIDEgZXZlbiBmb3IgZGlzYWJsZWQgcGlwZXMsIGJ1dCB0aGF0 IHRyaWdnZXJlZCBhCldBUk4gYmVjYXVzZSBTRFZPX0NNRF9HRVRfQ0xPQ0tfUkFURV9NVUxUIGNv bW1hbmQgZmFpbGVkIGFuZCB0aHVzCmVuY29kZXJfcGl4ZWxfbXVsdGlwbGllciB3YXMgbGVmdCBh dCB6ZXJvIGFuZCBkaWRuJ3QgbWF0Y2gKcGlwZV9jb25maWctPnBpeGVsX211bHRpcGxpZXIuCgpU aGUgImRpdmlkZSBieSBwaXhlbF9tdWx0aXBsaWVyIiBvcGVyYXRpb24gZ290IGludHJvZHVjZWQg aGVyZToKIGNvbW1pdCAxODQ0MmQwODc4NjQ3MmM2M2EwYTgwYzI3ZjkyYjAzM2RmZmMyNmRlCiBB dXRob3I6IFZpbGxlIFN5cmrDg8KkbMODwqQgPHZpbGxlLnN5cmphbGFAbGludXguaW50ZWwuY29t PgogRGF0ZTogICBGcmkgU2VwIDEzIDE2OjAwOjA4IDIwMTMgKzAzMDAKCiAgICBkcm0vaTkxNTog Rml4IHBvcnRfY2xvY2sgYW5kIGFkanVzdGVkX21vZGUuY2xvY2sgcmVhZG91dCBhbGwgb3ZlcgoK YW5kIGl0IGhhcyBjYXVzZWQgYSByZWdyZXNzaW9uIG9uIGNlcnRhaW4gbWFjaGluZXMgc2luY2Ug dGhleSB3b3VsZApoaXQgdGhlIGRpdi1ieS16ZXJvIGR1cmluZyByZXN1bWUuCgpCdWd6aWxsYTog aHR0cHM6Ly9idWdzLmZyZWVkZXNrdG9wLm9yZy9zaG93X2J1Zy5jZ2k/aWQ9NzY1MjAKQ2M6IDxz dGFibGVAdmdlci5rZXJuZWwub3JnPiAjIDMuMTMrClRlc3RlZC1ieTogVGltIFJpY2hhcmRzb24g PHRpbUB0aW0tcmljaGFyZHNvbi5uZXQ+ClNpZ25lZC1vZmYtYnk6IFZpbGxlIFN5cmrDpGzDpCA8 dmlsbGUuc3lyamFsYUBsaW51eC5pbnRlbC5jb20+Ci0tLQogZHJpdmVycy9ncHUvZHJtL2k5MTUv aW50ZWxfc2R2by5jIHwgNCArKystCiAxIGZpbGUgY2hhbmdlZCwgMyBpbnNlcnRpb25zKCspLCAx IGRlbGV0aW9uKC0pCgpkaWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfc2R2 by5jIGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfc2R2by5jCmluZGV4IDZhNGQ1YmMuLjIw Mzc1Y2MgMTAwNjQ0Ci0tLSBhL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX3Nkdm8uYworKysg Yi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9zZHZvLmMKQEAgLTEzODUsNyArMTM4NSw5IEBA IHN0YXRpYyB2b2lkIGludGVsX3Nkdm9fZ2V0X2NvbmZpZyhzdHJ1Y3QgaW50ZWxfZW5jb2RlciAq ZW5jb2RlciwKIAkJCSA+PiBTRFZPX1BPUlRfTVVMVElQTFlfU0hJRlQpICsgMTsKIAl9CiAKLQlk b3RjbG9jayA9IHBpcGVfY29uZmlnLT5wb3J0X2Nsb2NrIC8gcGlwZV9jb25maWctPnBpeGVsX211 bHRpcGxpZXI7CisJZG90Y2xvY2sgPSBwaXBlX2NvbmZpZy0+cG9ydF9jbG9jazsKKwlpZiAocGlw ZV9jb25maWctPnBpeGVsX211bHRpcGxpZXIpCisJCWRvdGNsb2NrIC89IHBpcGVfY29uZmlnLT5w aXhlbF9tdWx0aXBsaWVyOwogCiAJaWYgKEhBU19QQ0hfU1BMSVQoZGV2KSkKIAkJaXJvbmxha2Vf Y2hlY2tfZW5jb2Rlcl9kb3RjbG9jayhwaXBlX2NvbmZpZywgZG90Y2xvY2spOwotLSAKMS44LjUu NQoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KSW50ZWwt Z2Z4IG1haWxpbmcgbGlzdApJbnRlbC1nZnhAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHA6Ly9s aXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9pbnRlbC1nZngK