From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ramalingam C Subject: Re: [PATCH 1/5] drm/i915: Read HDCP R0 thrice in case of mismatch Date: Tue, 27 Feb 2018 17:08:30 +0530 Message-ID: <88e5d0ab-db45-848e-4aa5-90a69b094950@intel.com> References: <1519665159-28639-1-git-send-email-ramalingam.c@intel.com> <1519665159-28639-2-git-send-email-ramalingam.c@intel.com> <20180226173723.GV223881@art_vandelay> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20180226173723.GV223881@art_vandelay> Content-Language: en-US List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Sean Paul Cc: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org CgpPbiBNb25kYXkgMjYgRmVicnVhcnkgMjAxOCAxMTowNyBQTSwgU2VhbiBQYXVsIHdyb3RlOgo+ IE9uIE1vbiwgRmViIDI2LCAyMDE4IGF0IDEwOjQyOjM1UE0gKzA1MzAsIFJhbWFsaW5nYW0gQyB3 cm90ZToKPj4gQXMgcGVyIERQIHNwZWMgd2hlbiBSMCBtaXNtYXRjaCBpcyBkZXRlY3RlZCwgSERD UCBzb3VyY2Ugc3VwcG9ydGVkCj4+IHJlLXJlYWQgdGhlIFIwIGF0bGVhc3QgdHdpY2UuCj4+Cj4+ IEFuZCBGb3IgSERNSSBhbmQgRFAgbWluaW11bSB3YWl0IHJlcXVpcmVkIGZvciB0aGUgUjAgYXZh aWxhYmlsaXR5IGlzCj4+IDEwMG1TZWMuIFNvIHRoaXMgcGF0Y2ggY2hhbmdlcyB0aGUgd2FpdCB0 aW1lIHRvIDEwMG1TZWMgYnV0IHJldHJpZXMKPj4gdHdpY2Ugd2l0aCB0aGUgdGltZSBpbnRlcnZh bCBvZiAxMDBtU2VjIGZvciBlYWNoIGF0dGVtcHQuCj4gIlIwJyBtdXN0IGJlIGF2YWlsYWJsZSBm b3IgdGhlIEhEQ1AgVHJhbnNtaXR0ZXIgdG8gcmVhZCB3aXRoaW4gMTAwCj4gbWlsbGlzZWNvbmRz IGZyb20gdGhlIHRpbWUgdGhhdCB0aGUgSERDUCBUcmFuc21pdHRlciBmaW5pc2hlcyB3cml0aW5n IEFrc3YgdG8KPiB0aGUgdmlkZW8gcmVjZWl2ZXIuIgo+Cj4gMTAwbXMgaXMgYSBtaW5pbXVtLCB3 YWl0aW5nIGZvciAzMDBtcyBpcyBxdWl0ZSBnZW5lcm91cy4KClllcyBFdmVuIHdpdGggdGhpcyBw YXRjaCwgdG90YWwgd2FpdCB0aW1lIGZvciBSMCB3aWxsIGJlIDMwMCBtU2VjIG9ubHkuIFNwbGl0 dGVkIGludG8gMyAxMDBtU2VjIHdhaXQgb25lIGluIGVhY2ggbG9vcC4KRmlyc3QgbG9vcCB3YWl0 cyBmb3IgMTAwbVNlYyBmcm9tIEFLU1Ygd3JpdGUsIHNlY29uZCBsb29wIHdhaXRzIGZvciAyMDBt U2VjIGZyb20gQUtTViB3cml0ZSBhbmQKdGhpcmQgaXMgMzAwbVNlYyBmcm9tIEFLU1Ygd3JpdGUu CgpUaGlzIHdheSBpZiBhIG1vbml0b3IgcHJlcGFyZXMgdGhlIFIwIGluIDEwMCBtU2VjLCB3ZSB3 b250IHNpbXBseSB3YWl0IGZvciAzMDBtU2VjLgpBbmQgYWxzbyB3ZSBmdWxmaWxsIERQIGNvbXBs aWFuY2UgZXhwZWN0YXRpb24gb2YgdGhyZWUgYXR0ZW1wdHMgdG8gcmVhZCB2YWxpZCBSMC4KCi0t UmFtCgo+Cj4gVGhlIHJldHJ5IGlzIHRvIGFjY291bnQgZm9yIGxpbmsgZXJyb3JzLCBzbyB0aGVy ZSdzIG5vIG5lZWQgdG8gaW5jbHVkZSB0aGUgd2FpdAo+IGluIHRoZSByZXRyeSBsb29wLgo+Cj4g U2Vhbgo+Cj4+IERQIENUUyBUZXN0OiAxQS0wNi4KPj4KPj4gU2lnbmVkLW9mZi1ieTogUmFtYWxp bmdhbSBDIDxyYW1hbGluZ2FtLmNAaW50ZWwuY29tPgo+PiAtLS0KPj4gICBkcml2ZXJzL2dwdS9k cm0vaTkxNS9pbnRlbF9oZGNwLmMgfCAzNCArKysrKysrKysrKysrKysrKysrKysrLS0tLS0tLS0t LS0tCj4+ICAgMSBmaWxlIGNoYW5nZWQsIDIyIGluc2VydGlvbnMoKyksIDEyIGRlbGV0aW9ucygt KQo+Pgo+PiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfaGRjcC5jIGIv ZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfaGRjcC5jCj4+IGluZGV4IDE0Y2E1ZDMwNTdhNy4u NzMwNjgxZDJkYmZiIDEwMDY0NAo+PiAtLS0gYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9o ZGNwLmMKPj4gKysrIGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfaGRjcC5jCj4+IEBAIC00 OTYsMjUgKzQ5NiwzNSBAQCBzdGF0aWMgaW50IGludGVsX2hkY3BfYXV0aChzdHJ1Y3QgaW50ZWxf ZGlnaXRhbF9wb3J0ICppbnRlbF9kaWdfcG9ydCwKPj4gICAJfQo+PiAgIAo+PiAgIAkvKgo+PiAt CSAqIFdhaXQgZm9yIFIwJyB0byBiZWNvbWUgYXZhaWxhYmxlLiBUaGUgc3BlYyBzYXlzIDEwMG1z IGZyb20gQWtzdiwgYnV0Cj4+IC0JICogc29tZSBtb25pdG9ycyBjYW4gdGFrZSBsb25nZXIgdGhh biB0aGlzLiBXZSdsbCBzZXQgdGhlIHRpbWVvdXQgYXQKPj4gLQkgKiAzMDBtcyBqdXN0IHRvIGJl IHN1cmUuCj4+ICsJICogV2FpdCBmb3IgUjAnIHRvIGJlY29tZSBhdmFpbGFibGUuIFRoZSBzcGVj IHNheXMgbWluaW11bSAxMDBtcyBmcm9tCj4+ICsJICogQWtzdiwgYnV0IHNvbWUgbW9uaXRvcnMg Y2FuIHRha2UgbG9uZ2VyIHRoYW4gdGhpcy4gU28gd2UgYXJlCj4+ICsJICogY29tYmluZWx5IHdh aXRpbmcgZm9yIDMwMG1TZWMganVzdCB0byBiZSBzdXJlIGluIGNhc2Ugb2YgSERNSS4KPj4gKwkg KiBEUCBIRENQIFNwZWMgbWFuZGF0ZXMgdGhlIHR3byBtb3JlIHJlYXR0ZW1wdCB0byByZWFkIFIw LCBpbmNhc2UKPj4gKwkgKiBvZiBSMCBtaXNtYXRjaC4KPj4gICAJICoKPj4gICAJICogT24gRFAs IHRoZXJlJ3MgYW4gUjBfUkVBRFkgYml0IGF2YWlsYWJsZSBidXQgbm8gc3VjaCBiaXQKPj4gICAJ ICogZXhpc3RzIG9uIEhETUkuIFNpbmNlIHRoZSB1cHBlci1ib3VuZCBpcyB0aGUgc2FtZSwgd2Un bGwganVzdCBkbwo+PiAgIAkgKiB0aGUgc3R1cGlkIHRoaW5nIGluc3RlYWQgb2YgcG9sbGluZyBv biBvbmUgYW5kIG5vdCB0aGUgb3RoZXIuCj4+ICAgCSAqLwo+PiAtCXdhaXRfcmVtYWluaW5nX21z X2Zyb21famlmZmllcyhyMF9wcmltZV9nZW5fc3RhcnQsIDMwMCk7Cj4+ICAgCj4+IC0JcmkucmVn ID0gMDsKPj4gLQlyZXQgPSBzaGltLT5yZWFkX3JpX3ByaW1lKGludGVsX2RpZ19wb3J0LCByaS5z aGltKTsKPj4gLQlpZiAocmV0KQo+PiAtCQlyZXR1cm4gcmV0Owo+PiAtCUk5MTVfV1JJVEUoUE9S VF9IRENQX1JQUklNRShwb3J0KSwgcmkucmVnKTsKPj4gKwl0cmllcyA9IDM7Cj4+ICsJZm9yIChp ID0gMDsgaSA8IHRyaWVzOyBpKyspIHsKPj4gKwkJd2FpdF9yZW1haW5pbmdfbXNfZnJvbV9qaWZm aWVzKHIwX3ByaW1lX2dlbl9zdGFydCwKPj4gKwkJCQkJICAgICAgIDEwMCAqIChpICsgMSkpOwo+ PiAgIAo+PiAtCS8qIFdhaXQgZm9yIFJpIHByaW1lIG1hdGNoICovCj4+IC0JaWYgKHdhaXRfZm9y KEk5MTVfUkVBRChQT1JUX0hEQ1BfU1RBVFVTKHBvcnQpKSAmCj4+IC0JCSAgICAgKEhEQ1BfU1RB VFVTX1JJX01BVENIIHwgSERDUF9TVEFUVVNfRU5DKSwgMSkpIHsKPj4gKwkJcmkucmVnID0gMDsK Pj4gKwkJcmV0ID0gc2hpbS0+cmVhZF9yaV9wcmltZShpbnRlbF9kaWdfcG9ydCwgcmkuc2hpbSk7 Cj4+ICsJCWlmIChyZXQpCj4+ICsJCQlyZXR1cm4gcmV0Owo+PiArCQlJOTE1X1dSSVRFKFBPUlRf SERDUF9SUFJJTUUocG9ydCksIHJpLnJlZyk7Cj4+ICsKPj4gKwkJLyogV2FpdCBmb3IgUmkgcHJp bWUgbWF0Y2ggKi8KPj4gKwkJaWYgKCF3YWl0X2ZvcihJOTE1X1JFQUQoUE9SVF9IRENQX1NUQVRV Uyhwb3J0KSkgJgo+PiArCQkgICAgKEhEQ1BfU1RBVFVTX1JJX01BVENIIHwgSERDUF9TVEFUVVNf RU5DKSwgMSkpCj4+ICsJCQlicmVhazsKPj4gKwl9Cj4+ICsKPj4gKwlpZiAoaSA9PSB0cmllcykg ewo+PiAgIAkJRFJNX0VSUk9SKCJUaW1lZCBvdXQgd2FpdGluZyBmb3IgUmkgcHJpbWUgbWF0Y2gg KCV4KVxuIiwKPj4gICAJCQkgIEk5MTVfUkVBRChQT1JUX0hEQ1BfU1RBVFVTKHBvcnQpKSk7Cj4+ ICAgCQlyZXR1cm4gLUVUSU1FRE9VVDsKPj4gLS0gCj4+IDIuNy40Cj4+CgpfX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpJbnRlbC1nZnggbWFpbGluZyBsaXN0 CkludGVsLWdmeEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3Rv cC5vcmcvbWFpbG1hbi9saXN0aW5mby9pbnRlbC1nZngK