From mboxrd@z Thu Jan 1 00:00:00 1970 From: Egbert Eich Subject: [PATCH 4/4] drm/i915: Avoid race of intel_crt_detect_hotplug() with HPD interrupt Date: Tue, 1 Sep 2015 22:21:35 +0200 Message-ID: <1441138895-23732-5-git-send-email-eich@suse.de> References: <1441138895-23732-1-git-send-email-eich@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mx2.suse.de (mx2.suse.de [195.135.220.15]) by gabe.freedesktop.org (Postfix) with ESMTPS id 85EB86E78C for ; Tue, 1 Sep 2015 13:22:31 -0700 (PDT) In-Reply-To: <1441138895-23732-1-git-send-email-eich@suse.de> 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: Egbert Eich , Daniel Vetter List-Id: intel-gfx@lists.freedesktop.org QSBIUEQgaW50ZXJydXB0IG1heSBmaXJlIGR1cmluZyBpbnRlbF9jcnRfZGV0ZWN0X2hvdHBsdWco KSAtIGVzcGVjaWFsbHkKd2hlbiBIUEQgaW50ZXJydXB0IHN0b3JtcyBvY2N1ci4KU2luY2UgdGhl IGludGVycnVwdCBoYW5kbGVyIGNoYW5nZXMgdGhlIGVuYWJsZWQgaW50ZXJydXB0IGxpbmVzIHdo ZW4gaXQKZGV0ZWN0cyBhIHN0b3JtIHRoaXMgcmFjZXMgd2l0aCBpbnRlbF9jcnRfZGV0ZWN0X2hv dHBsdWcoKS4KVG8gYXZvaWQgdGhpcywgc2hpbGVkIHRoZSBybXcgY3ljbGVzIHdpdGggSVJRIHNh dmUgc3BpbmxvY2tzLgoKU2lnbmVkLW9mZi1ieTogRWdiZXJ0IEVpY2ggPGVpY2hAc3VzZS5kZT4K LS0tCiBkcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9jcnQuYyB8IDE3ICsrKysrKysrKysrKy0t LS0tCiAxIGZpbGUgY2hhbmdlZCwgMTIgaW5zZXJ0aW9ucygrKSwgNSBkZWxldGlvbnMoLSkKCmRp ZmYgLS1naXQgYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9jcnQuYyBiL2RyaXZlcnMvZ3B1 L2RybS9pOTE1L2ludGVsX2NydC5jCmluZGV4IGFmNWU0M2IuLjY4NWYzZGUgMTAwNjQ0Ci0tLSBh L2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2NydC5jCisrKyBiL2RyaXZlcnMvZ3B1L2RybS9p OTE1L2ludGVsX2NydC5jCkBAIC0zNzYsOSArMzc2LDEwIEBAIHN0YXRpYyBib29sIGludGVsX2Ny dF9kZXRlY3RfaG90cGx1ZyhzdHJ1Y3QgZHJtX2Nvbm5lY3RvciAqY29ubmVjdG9yKQogewogCXN0 cnVjdCBkcm1fZGV2aWNlICpkZXYgPSBjb25uZWN0b3ItPmRldjsKIAlzdHJ1Y3QgZHJtX2k5MTVf cHJpdmF0ZSAqZGV2X3ByaXYgPSBkZXYtPmRldl9wcml2YXRlOwotCXUzMiBob3RwbHVnX2VuLCBv cmlnLCBzdGF0OworCXUzMiBob3RwbHVnX2VuLCBzdGF0OwogCWJvb2wgcmV0ID0gZmFsc2U7CiAJ aW50IGksIHRyaWVzID0gMDsKKwl1bnNpZ25lZCBsb25nIGlycWZsYWdzOwogCiAJaWYgKEhBU19Q Q0hfU1BMSVQoZGV2KSkKIAkJcmV0dXJuIGludGVsX2lyb25sYWtlX2NydF9kZXRlY3RfaG90cGx1 Zyhjb25uZWN0b3IpOwpAQCAtMzk1LDEyICszOTYsMTQgQEAgc3RhdGljIGJvb2wgaW50ZWxfY3J0 X2RldGVjdF9ob3RwbHVnKHN0cnVjdCBkcm1fY29ubmVjdG9yICpjb25uZWN0b3IpCiAJCXRyaWVz ID0gMjsKIAllbHNlCiAJCXRyaWVzID0gMTsKLQlob3RwbHVnX2VuID0gb3JpZyA9IEk5MTVfUkVB RChQT1JUX0hPVFBMVUdfRU4pOwotCWhvdHBsdWdfZW4gfD0gQ1JUX0hPVFBMVUdfRk9SQ0VfREVU RUNUOwogCiAJZm9yIChpID0gMDsgaSA8IHRyaWVzIDsgaSsrKSB7CiAJCS8qIHR1cm4gb24gdGhl IEZPUkNFX0RFVEVDVCAqLwotCQlJOTE1X1dSSVRFKFBPUlRfSE9UUExVR19FTiwgaG90cGx1Z19l bik7CisJCXNwaW5fbG9ja19pcnFzYXZlKCZkZXZfcHJpdi0+aXJxX2xvY2ssIGlycWZsYWdzKTsK KwkJaG90cGx1Z19lbiA9IEk5MTVfUkVBRChQT1JUX0hPVFBMVUdfRU4pOworCQlJOTE1X1dSSVRF KFBPUlRfSE9UUExVR19FTiwgaG90cGx1Z19lbiB8CisJCQkgICBDUlRfSE9UUExVR19GT1JDRV9E RVRFQ1QpOworCQlzcGluX3VubG9ja19pcnFyZXN0b3JlKCZkZXZfcHJpdi0+aXJxX2xvY2ssIGly cWZsYWdzKTsKIAkJLyogd2FpdCBmb3IgRk9SQ0VfREVURUNUIHRvIGdvIG9mZiAqLwogCQlpZiAo d2FpdF9mb3IoKEk5MTVfUkVBRChQT1JUX0hPVFBMVUdfRU4pICYKIAkJCSAgICAgIENSVF9IT1RQ TFVHX0ZPUkNFX0RFVEVDVCkgPT0gMCwKQEAgLTQxNiw3ICs0MTksMTEgQEAgc3RhdGljIGJvb2wg aW50ZWxfY3J0X2RldGVjdF9ob3RwbHVnKHN0cnVjdCBkcm1fY29ubmVjdG9yICpjb25uZWN0b3Ip CiAJSTkxNV9XUklURShQT1JUX0hPVFBMVUdfU1RBVCwgQ1JUX0hPVFBMVUdfSU5UX1NUQVRVUyk7 CiAKIAkvKiBhbmQgcHV0IHRoZSBiaXRzIGJhY2sgKi8KLQlJOTE1X1dSSVRFKFBPUlRfSE9UUExV R19FTiwgb3JpZyk7CisJc3Bpbl9sb2NrX2lycXNhdmUoJmRldl9wcml2LT5pcnFfbG9jaywgaXJx ZmxhZ3MpOworCWhvdHBsdWdfZW4gPSBJOTE1X1JFQUQoUE9SVF9IT1RQTFVHX0VOKTsKKwlob3Rw bHVnX2VuICY9IH5DUlRfSE9UUExVR19GT1JDRV9ERVRFQ1Q7CisJSTkxNV9XUklURShQT1JUX0hP VFBMVUdfRU4sIGhvdHBsdWdfZW4pOworCXNwaW5fdW5sb2NrX2lycXJlc3RvcmUoJmRldl9wcml2 LT5pcnFfbG9jaywgaXJxZmxhZ3MpOwogCiAJcmV0dXJuIHJldDsKIH0KLS0gCjEuOC40LjUKCl9f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCkludGVsLWdmeCBt YWlsaW5nIGxpc3QKSW50ZWwtZ2Z4QGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwOi8vbGlzdHMu ZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vaW50ZWwtZ2Z4Cg==