From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sonika Jindal Subject: [PATCH] drm/i915: Check live status before reading edid Date: Tue, 15 Sep 2015 09:44:20 +0530 Message-ID: <1442290460-22109-1-git-send-email-sonika.jindal@intel.com> References: <20150914093618.GY3383@phenom.ffwll.local> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by gabe.freedesktop.org (Postfix) with ESMTP id A2BD96E381 for ; Mon, 14 Sep 2015 21:26:11 -0700 (PDT) In-Reply-To: <20150914093618.GY3383@phenom.ffwll.local> 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 List-Id: intel-gfx@lists.freedesktop.org VGhlIEJzcGVjIGlzIHZlcnkgY2xlYXIgdGhhdCBMaXZlIHN0YXR1cyBtdXN0IGJlIGNoZWNrZWQg YWJvdXQgYmVmb3JlCnRyeWluZyB0byByZWFkIEVESUQgb3ZlciBEREMgY2hhbm5lbC4gVGhpcyBw YXRjaCBtYWtlcyBzdXJlIHRoYXQgSERNSQpFRElEIGlzIHJlYWQgb25seSB3aGVuIGxpdmUgc3Rh dHVzIGlzIHVwLgoKVGhlIGxpdmUgc3RhdHVzIGRvZXNuJ3Qgc2VlbSB0byBwZXJmb3JtIHZlcnkg Y29uc2lzdGVudCBhY3Jvc3MgdmFyaW91cwpwbGF0Zm9ybXMgd2hlbiB0ZXN0ZWQgd2l0aCBkaWZm ZXJlbnQgbW9uaXRvcnMuIFRoZSByZWFzb24gYmVoaW5kIHRoYXQgaXMKc29tZSBtb25pdG9ycyBh cmUgbGF0ZSB0byBwcm92aWRlIHJpZ2h0IHZvbHRhZ2UgdG8gc2V0IGxpdmVfc3RhdHVzIHVwLgpT bywgYWZ0ZXIgZ2V0dGluZyB0aGUgaW50ZXJydXB0LCBmb3IgYSBzbWFsbCBkdXJhdGlvbiwgbGl2 ZSBzdGF0dXMgcmVnCmZsdWN0dWF0ZXMsIGFuZCB0aGVuIHNldHRsZXMgZG93biBzaG93aW5nIHRo ZSBjb3JyZWN0IHN0YXVzLgoKVGhpcyBpcyBleHBsYWluZWQgaGVyZSBpbiwgaW4gYSByb3VnaCB3 YXk6CkhQRCBsaW5lICBfX19fX19fX19fX19fX19fCgkJCSB8XCBUMSA9IE1vbml0b3IgSG90cGx1 ZyBjYXVzaW5nIElSUQoJCQkgfCBcX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X18KCQkJIHwgfAogICAgICAgICAgICAgICAgICAgICAgICAgfCB8CgkJCSB8IHwgICBUMiA9IExp dmUgc3RhdHVzIGlzIHN0YWJsZQoJCQkgfCB8ICBfX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fCgkJCSB8IHwgL3wKTGl2ZSBzdGF0dXMgX19fX19fX19fX19fX3xffC8gfAoJCQkg fCB8ICB8CgkJCSB8IHwgIHwKCQkJIHwgfCAgfAoJCQlUMCBUMSAgVDIKCihCZXR3ZWVuIFQxIGFu ZCBUMiBMaXZlIHN0YXR1cyBmbHVjdHVhdGVzIG9yIGNhbiBiZSBldmVuIGxvdywgZGVwZW5kaW5n IG9uCiB0aGUgbW9uaXRvcikKCkFmdGVyIHNldmVyYWwgZXhwZXJpbWVudHMsIHdlIGhhdmUgY29u Y2x1ZGVkIHRoYXQgYSBtYXggZGVsYXkKb2YgMzBtcyBpcyBlbm91Z2ggdG8gYWxsb3cgdGhlIGxp dmUgc3RhdHVzIHRvIHNldHRsZSBkb3duIHdpdGgKbW9zdCBvZiB0aGUgbW9uaXRvcnMuIFRoaXMg dG90YWwgZGVsYXkgb2YgMzBtcyBoYXMgYmVlbiBzcGxpdCBpbnRvCmEgcmVzb2x1dGlvbiBvZiAz IHJldHJpZXMgb2YgMTBtcyBlYWNoLCBmb3IgdGhlIGJldHRlciBjYXNlcy4KClRoaXMgZGVsYXkg aXMga2VwdCBhdCAzMG1zLCBrZWVwaW5nIGluIGNvbnNpZGVyYXRpb24gdGhhdCwgSERDUCBjb21w bGlhbmNlCmV4cGVjdCB0aGUgSFBEIGhhbmRsZXIgdG8gcmVzcG9uZCBhIHBsdWcgb3V0IGluIDEw MG1zLCBieSBkaXNhYmxpbmcgcG9ydC4KCnYyOiBBZGRpbmcgY2hlY2tzIGZvciBWTFYvQ0hWIGFz IHdlbGwuIFJldXNpbmcgb2xkIGlieCBhbmQgZzR4IGZ1bmN0aW9ucwp0byBjaGVjayBkaWdpdGFs IHBvcnQgc3RhdHVzLiBBZGRpbmcgYSBzZXBhcmF0ZSBmdW5jdGlvbiB0byBnZXQgYnh0IGxpdmUK c3RhdHVzIChEYW5pZWwpCnYzOiBVc2luZyBpbnRlbF9lbmNvZGVyLT5ocGRfcGluIHRvIGNoZWNr IHRoZSBsaXZlIHN0YXR1cyAoU2l2YSkKTW92aW5nIHRoZSBsaXZlIHN0YXR1cyByZWFkIHRvIGlu dGVsX2hkbWlfcHJvYmUgYW5kIHBhc3NpbmcgcGFyYW1ldGVyCnRvIHJlYWQvbm90IHRvIHJlYWQg dGhlIGVkaWQuIChtZSkKdjQ6CiogQWRkZWQgbGl2ZSBzdGF0dXMgY2hlY2sgZm9yIGFsbCBwbGF0 Zm9ybXMgdXNpbmcKaW50ZWxfZGlnaXRhbF9wb3J0X2Nvbm5lY3RlZC4KKiBSZWJhc2VkIG9uIHRv cCBvZiBKYW5pJ3MgRFAgY2xlYW51cCBzZXJpZXMKKiBTb21lIG1vbml0b3JzIHRha2UgdGltZSBp biBzZXR0aW5nIHRoZSBsaXZlIHN0YXR1cy4gU28gcmV0cnkgZm9yIGZldwp0aW1lcyBpZiB0aGlz IGlzIGEgY29ubmVjdCBIUEQKdjU6IFJlbW92ZWQgZXh0cmEgImRybS9pOTE1IiBmcm9tIGNvbW1p dCBtZXNzYWdlLiBBZGRpbmcgU2hhc2hhbmsncyBzb2IKICAgIHdoaWNoIHdhcyBtaXNzZWQuCnY2 OiBEcm9wIHRoZSAoIWRldGVjdF9lZGlkICYmICFsaXZlX3N0YXR1cyBjaGVjaykgY2hlY2sgYmVj YXVzZSBmb3IgRERJCnBvcnRzIHdoaWNoIGFyZSBlbnVtZXJhdGVkIGFzIGhkbWkgYXMgd2VsbCBh cyBEUCwgd2UgZG9uJ3QgaGF2ZSBhCm1lY2hhbmlzbSB0byBkaWZmZXJlbnRpYXRlIGJldHdlZW4g RFAgYW5kIGhkbWkgaW5zaWRlIHRoZSBlbmNvZGVyJ3MKaG90X3BsdWcuIFRoaXMgbGVhZHMgdG8g Y2FsbCB0byB0aGUgaGRtaSdzIGhvdF9wbHVnIGhvb2sgZm9yIERQIGFzIHdlbGwKYXMgaGRtaSB3 aGljaCBsZWFkcyB0byBpc3N1ZXMgZHVyaW5nIHVucGx1ZyBiZWNhdXNlIG9mIHRoZSBhYm92ZSBj aGVjay4Kdjc6IE1ha2UgaW50ZWxfZGlnaXRhbF9wb3J0X2Nvbm5lY3RlZCBnbG9iYWwgaW4gdGhp cyBwYXRjaCwgc29tZQpyZWZvcm1hdHRpbmcgb2Ygd2hpbGUgbG9vcCwgYWRkaW5nIGEgcHJpbnQg d2hlbiBsaXZlIHN0YXR1cyBpcyBub3QKdXAuIChSb2RyaWdvKQp2ODogUmViYXNlIGl0IG9uIG5p Z2h0bHkgd2hpY2ggaW52b2x2ZWQgc2tpcHBpbmcgdGhlIGhvdF9wbHVnIGhvb2sgZm9yIG5vdwph bmQgbGV0dGluZyB0aGUgbGl2ZV9zdGF0dXMgY2hlY2sgaGFwcGVuIGluIGRldGVjdCB1bnRpbCB0 aGUgaHBkIGhhbmRsaW5nCnBhcnQgaXMgZmluYWxpemVkIChEYW5pZWwpCgpTaWduZWQtb2ZmLWJ5 OiBTaGFzaGFuayBTaGFybWEgPHNoYXNoYW5rLnNoYXJtYUBpbnRlbC5jb20+ClNpZ25lZC1vZmYt Ynk6IFNvbmlrYSBKaW5kYWwgPHNvbmlrYS5qaW5kYWxAaW50ZWwuY29tPgpSZXZpZXdlZC1ieTog Um9kcmlnbyBWaXZpIDxyb2RyaWdvLnZpdmlAaW50ZWwuY29tPgotLS0KIGRyaXZlcnMvZ3B1L2Ry bS9pOTE1L2ludGVsX2RwLmMgICB8ICAgIDIgKy0KIGRyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVs X2Rydi5oICB8ICAgIDIgKysKIGRyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2hkbWkuYyB8ICAg MjggKysrKysrKysrKysrKysrKysrKysrLS0tLS0tLQogMyBmaWxlcyBjaGFuZ2VkLCAyNCBpbnNl cnRpb25zKCspLCA4IGRlbGV0aW9ucygtKQoKZGlmZiAtLWdpdCBhL2RyaXZlcnMvZ3B1L2RybS9p OTE1L2ludGVsX2RwLmMgYi9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9kcC5jCmluZGV4IGE2 ODcyNTAuLmE2ZTIyZGQgMTAwNjQ0Ci0tLSBhL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2Rw LmMKKysrIGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfZHAuYwpAQCAtNDY3MCw3ICs0Njcw LDcgQEAgc3RhdGljIGJvb2wgYnh0X2RpZ2l0YWxfcG9ydF9jb25uZWN0ZWQoc3RydWN0IGRybV9p OTE1X3ByaXZhdGUgKmRldl9wcml2LAogICoKICAqIFJldHVybiAldHJ1ZSBpZiBAcG9ydCBpcyBj b25uZWN0ZWQsICVmYWxzZSBvdGhlcndpc2UuCiAgKi8KLXN0YXRpYyBib29sIGludGVsX2RpZ2l0 YWxfcG9ydF9jb25uZWN0ZWQoc3RydWN0IGRybV9pOTE1X3ByaXZhdGUgKmRldl9wcml2LAorYm9v bCBpbnRlbF9kaWdpdGFsX3BvcnRfY29ubmVjdGVkKHN0cnVjdCBkcm1faTkxNV9wcml2YXRlICpk ZXZfcHJpdiwKIAkJCQkJIHN0cnVjdCBpbnRlbF9kaWdpdGFsX3BvcnQgKnBvcnQpCiB7CiAJaWYg KEhBU19QQ0hfSUJYKGRldl9wcml2KSkKZGlmZiAtLWdpdCBhL2RyaXZlcnMvZ3B1L2RybS9pOTE1 L2ludGVsX2Rydi5oIGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfZHJ2LmgKaW5kZXggMDhi YTM2Mi4uMWUwMTM1MCAxMDA2NDQKLS0tIGEvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfZHJ2 LmgKKysrIGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfZHJ2LmgKQEAgLTEyMTAsNiArMTIx MCw4IEBAIHZvaWQgaW50ZWxfZWRwX2RycnNfZGlzYWJsZShzdHJ1Y3QgaW50ZWxfZHAgKmludGVs X2RwKTsKIHZvaWQgaW50ZWxfZWRwX2RycnNfaW52YWxpZGF0ZShzdHJ1Y3QgZHJtX2RldmljZSAq ZGV2LAogCQl1bnNpZ25lZCBmcm9udGJ1ZmZlcl9iaXRzKTsKIHZvaWQgaW50ZWxfZWRwX2RycnNf Zmx1c2goc3RydWN0IGRybV9kZXZpY2UgKmRldiwgdW5zaWduZWQgZnJvbnRidWZmZXJfYml0cyk7 Citib29sIGludGVsX2RpZ2l0YWxfcG9ydF9jb25uZWN0ZWQoc3RydWN0IGRybV9pOTE1X3ByaXZh dGUgKmRldl9wcml2LAorCQkJCQkgc3RydWN0IGludGVsX2RpZ2l0YWxfcG9ydCAqcG9ydCk7CiB2 b2lkIGhzd19kcF9zZXRfZGRpX3BsbF9zZWwoc3RydWN0IGludGVsX2NydGNfc3RhdGUgKnBpcGVf Y29uZmlnKTsKIAogLyogaW50ZWxfZHBfbXN0LmMgKi8KZGlmZiAtLWdpdCBhL2RyaXZlcnMvZ3B1 L2RybS9pOTE1L2ludGVsX2hkbWkuYyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2hkbWku YwppbmRleCBlOTc4YzU5Li5iYjMzYzY2IDEwMDY0NAotLS0gYS9kcml2ZXJzL2dwdS9kcm0vaTkx NS9pbnRlbF9oZG1pLmMKKysrIGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxfaGRtaS5jCkBA IC0xMzI5LDIyICsxMzI5LDIzIEBAIGludGVsX2hkbWlfdW5zZXRfZWRpZChzdHJ1Y3QgZHJtX2Nv bm5lY3RvciAqY29ubmVjdG9yKQogfQogCiBzdGF0aWMgYm9vbAotaW50ZWxfaGRtaV9zZXRfZWRp ZChzdHJ1Y3QgZHJtX2Nvbm5lY3RvciAqY29ubmVjdG9yKQoraW50ZWxfaGRtaV9zZXRfZWRpZChz dHJ1Y3QgZHJtX2Nvbm5lY3RvciAqY29ubmVjdG9yLCBib29sIGZvcmNlKQogewogCXN0cnVjdCBk cm1faTkxNV9wcml2YXRlICpkZXZfcHJpdiA9IHRvX2k5MTUoY29ubmVjdG9yLT5kZXYpOwogCXN0 cnVjdCBpbnRlbF9oZG1pICppbnRlbF9oZG1pID0gaW50ZWxfYXR0YWNoZWRfaGRtaShjb25uZWN0 b3IpOwogCXN0cnVjdCBpbnRlbF9lbmNvZGVyICppbnRlbF9lbmNvZGVyID0KIAkJJmhkbWlfdG9f ZGlnX3BvcnQoaW50ZWxfaGRtaSktPmJhc2U7CiAJZW51bSBpbnRlbF9kaXNwbGF5X3Bvd2VyX2Rv bWFpbiBwb3dlcl9kb21haW47Ci0Jc3RydWN0IGVkaWQgKmVkaWQ7CisJc3RydWN0IGVkaWQgKmVk aWQgPSBOVUxMOwogCWJvb2wgY29ubmVjdGVkID0gZmFsc2U7CiAKIAlwb3dlcl9kb21haW4gPSBp bnRlbF9kaXNwbGF5X3BvcnRfcG93ZXJfZG9tYWluKGludGVsX2VuY29kZXIpOwogCWludGVsX2Rp c3BsYXlfcG93ZXJfZ2V0KGRldl9wcml2LCBwb3dlcl9kb21haW4pOwogCi0JZWRpZCA9IGRybV9n ZXRfZWRpZChjb25uZWN0b3IsCi0JCQkgICAgaW50ZWxfZ21idXNfZ2V0X2FkYXB0ZXIoZGV2X3By aXYsCi0JCQkJCQkgICAgaW50ZWxfaGRtaS0+ZGRjX2J1cykpOworCWlmIChmb3JjZSkKKwkJZWRp ZCA9IGRybV9nZXRfZWRpZChjb25uZWN0b3IsCisJCQkJICAgIGludGVsX2dtYnVzX2dldF9hZGFw dGVyKGRldl9wcml2LAorCQkJCSAgICBpbnRlbF9oZG1pLT5kZGNfYnVzKSk7CiAKIAlpbnRlbF9k aXNwbGF5X3Bvd2VyX3B1dChkZXZfcHJpdiwgcG93ZXJfZG9tYWluKTsKIApAQCAtMTM3MiwxMyAr MTM3MywyNiBAQCBzdGF0aWMgZW51bSBkcm1fY29ubmVjdG9yX3N0YXR1cwogaW50ZWxfaGRtaV9k ZXRlY3Qoc3RydWN0IGRybV9jb25uZWN0b3IgKmNvbm5lY3RvciwgYm9vbCBmb3JjZSkKIHsKIAll bnVtIGRybV9jb25uZWN0b3Jfc3RhdHVzIHN0YXR1czsKKwlzdHJ1Y3QgaW50ZWxfaGRtaSAqaW50 ZWxfaGRtaSA9IGludGVsX2F0dGFjaGVkX2hkbWkoY29ubmVjdG9yKTsKKwlzdHJ1Y3QgZHJtX2k5 MTVfcHJpdmF0ZSAqZGV2X3ByaXYgPSB0b19pOTE1KGNvbm5lY3Rvci0+ZGV2KTsKKwlib29sIGxp dmVfc3RhdHVzID0gZmFsc2U7CisJdW5zaWduZWQgaW50IHJldHJ5ID0gMzsKIAogCURSTV9ERUJV R19LTVMoIltDT05ORUNUT1I6JWQ6JXNdXG4iLAogCQkgICAgICBjb25uZWN0b3ItPmJhc2UuaWQs IGNvbm5lY3Rvci0+bmFtZSk7CiAKKwl3aGlsZSAoIWxpdmVfc3RhdHVzICYmIC0tcmV0cnkpIHsK KwkJbGl2ZV9zdGF0dXMgPSBpbnRlbF9kaWdpdGFsX3BvcnRfY29ubmVjdGVkKGRldl9wcml2LAor CQkJCWhkbWlfdG9fZGlnX3BvcnQoaW50ZWxfaGRtaSkpOworCQltZGVsYXkoMTApOworCX0KKwor CWlmICghbGl2ZV9zdGF0dXMpCisJCURSTV9ERUJVR19LTVMoIkxpdmUgc3RhdHVzIG5vdCB1cCEi KTsKKwogCWludGVsX2hkbWlfdW5zZXRfZWRpZChjb25uZWN0b3IpOwogCi0JaWYgKGludGVsX2hk bWlfc2V0X2VkaWQoY29ubmVjdG9yKSkgeworCWlmIChpbnRlbF9oZG1pX3NldF9lZGlkKGNvbm5l Y3RvciwgbGl2ZV9zdGF0dXMpKSB7CiAJCXN0cnVjdCBpbnRlbF9oZG1pICppbnRlbF9oZG1pID0g aW50ZWxfYXR0YWNoZWRfaGRtaShjb25uZWN0b3IpOwogCiAJCWhkbWlfdG9fZGlnX3BvcnQoaW50 ZWxfaGRtaSktPmJhc2UudHlwZSA9IElOVEVMX09VVFBVVF9IRE1JOwpAQCAtMTQwMiw3ICsxNDE2 LDcgQEAgaW50ZWxfaGRtaV9mb3JjZShzdHJ1Y3QgZHJtX2Nvbm5lY3RvciAqY29ubmVjdG9yKQog CWlmIChjb25uZWN0b3ItPnN0YXR1cyAhPSBjb25uZWN0b3Jfc3RhdHVzX2Nvbm5lY3RlZCkKIAkJ cmV0dXJuOwogCi0JaW50ZWxfaGRtaV9zZXRfZWRpZChjb25uZWN0b3IpOworCWludGVsX2hkbWlf c2V0X2VkaWQoY29ubmVjdG9yLCB0cnVlKTsKIAloZG1pX3RvX2RpZ19wb3J0KGludGVsX2hkbWkp LT5iYXNlLnR5cGUgPSBJTlRFTF9PVVRQVVRfSERNSTsKIH0KIAotLSAKMS43LjEwLjQKCl9fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCkludGVsLWdmeCBtYWls aW5nIGxpc3QKSW50ZWwtZ2Z4QGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwOi8vbGlzdHMuZnJl ZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vaW50ZWwtZ2Z4Cg==