From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thierry Reding Subject: [PATCH] drm/dp: Do not busy-loop during link training Date: Mon, 14 Dec 2015 14:21:56 +0100 Message-ID: <1450099316-31126-1-git-send-email-thierry.reding@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mail-pf0-f170.google.com (mail-pf0-f170.google.com [209.85.192.170]) by gabe.freedesktop.org (Postfix) with ESMTPS id 92BCC6E67E for ; Mon, 14 Dec 2015 05:21:59 -0800 (PST) Received: by pfnn128 with SMTP id n128so105565984pfn.0 for ; Mon, 14 Dec 2015 05:21:59 -0800 (PST) Received: from localhost (port-6646.pppoe.wtnet.de. [84.46.26.16]) by smtp.gmail.com with ESMTPSA id tb8sm43088096pab.22.2015.12.14.05.21.58 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 14 Dec 2015 05:21:58 -0800 (PST) List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org RnJvbTogVGhpZXJyeSBSZWRpbmcgPHRyZWRpbmdAbnZpZGlhLmNvbT4KClVzZSBtaWNyb3NlY29u ZCBzbGVlcHMgZm9yIHRoZSBjbG9jayByZWNvdmVyeSBhbmQgY2hhbm5lbCBlcXVhbGl6YXRpb24K ZGVsYXlzIGR1cmluZyBsaW5rIHRyYWluaW5nLiBUaGUgZHVyYXRpb24gb2YgdGhlc2UgZGVsYXlz IGNhbiBiZSBmcm9tCjEwMCB1cyB1cCB0byAxNiBtcy4gSXQgaXMgcnVkZSB0byBidXN5LWxvb3Ag Zm9yIHRoYXQgYW1vdW50IG9mIHRpbWUuCgpXaGlsZSBhdCBpdCwgYWxzbyBjb252ZXJ0IHRvIHN0 YW5kYXJkIGNvZGluZyBzdHlsZSBieSBwdXR0aW5nIHRoZQpvcGVuaW5nIGJyYWNlcyBpbiBhIGZ1 bmN0aW9uIGRlZmluaXRpb24gb24gYSBuZXcgbGluZS4KClNpZ25lZC1vZmYtYnk6IFRoaWVycnkg UmVkaW5nIDx0cmVkaW5nQG52aWRpYS5jb20+Ci0tLQogZHJpdmVycy9ncHUvZHJtL2RybV9kcF9o ZWxwZXIuYyB8IDI2ICsrKysrKysrKysrKysrKysrKy0tLS0tLS0tCiAxIGZpbGUgY2hhbmdlZCwg MTggaW5zZXJ0aW9ucygrKSwgOCBkZWxldGlvbnMoLSkKCmRpZmYgLS1naXQgYS9kcml2ZXJzL2dw dS9kcm0vZHJtX2RwX2hlbHBlci5jIGIvZHJpdmVycy9ncHUvZHJtL2RybV9kcF9oZWxwZXIuYwpp bmRleCA3M2EzZTA1NDRmMzYuLjJkY2M0ZWZjZDM0YyAxMDA2NDQKLS0tIGEvZHJpdmVycy9ncHUv ZHJtL2RybV9kcF9oZWxwZXIuYworKysgYi9kcml2ZXJzL2dwdS9kcm0vZHJtX2RwX2hlbHBlci5j CkBAIC0xMjUsMTkgKzEyNSwyOSBAQCB1OCBkcm1fZHBfZ2V0X2FkanVzdF9yZXF1ZXN0X3Bvc3Rf Y3Vyc29yKGNvbnN0IHU4IGxpbmtfc3RhdHVzW0RQX0xJTktfU1RBVFVTX1NJWgogfQogRVhQT1JU X1NZTUJPTChkcm1fZHBfZ2V0X2FkanVzdF9yZXF1ZXN0X3Bvc3RfY3Vyc29yKTsKIAotdm9pZCBk cm1fZHBfbGlua190cmFpbl9jbG9ja19yZWNvdmVyeV9kZWxheShjb25zdCB1OCBkcGNkW0RQX1JF Q0VJVkVSX0NBUF9TSVpFXSkgewotCWlmIChkcGNkW0RQX1RSQUlOSU5HX0FVWF9SRF9JTlRFUlZB TF0gPT0gMCkKLQkJdWRlbGF5KDEwMCk7Cit2b2lkIGRybV9kcF9saW5rX3RyYWluX2Nsb2NrX3Jl Y292ZXJ5X2RlbGF5KGNvbnN0IHU4IGRwY2RbRFBfUkVDRUlWRVJfQ0FQX1NJWkVdKQoreworCXVu c2lnbmVkIGludCBtaW47CisKKwlpZiAoZHBjZFtEUF9UUkFJTklOR19BVVhfUkRfSU5URVJWQUxd ICE9IDApCisJCW1pbiA9IGRwY2RbRFBfVFJBSU5JTkdfQVVYX1JEX0lOVEVSVkFMXSAqIDQwMDA7 CiAJZWxzZQotCQltZGVsYXkoZHBjZFtEUF9UUkFJTklOR19BVVhfUkRfSU5URVJWQUxdICogNCk7 CisJCW1pbiA9IDEwMDsKKworCXVzbGVlcF9yYW5nZShtaW4sIG1pbiAqIDIpOwogfQogRVhQT1JU X1NZTUJPTChkcm1fZHBfbGlua190cmFpbl9jbG9ja19yZWNvdmVyeV9kZWxheSk7CiAKLXZvaWQg ZHJtX2RwX2xpbmtfdHJhaW5fY2hhbm5lbF9lcV9kZWxheShjb25zdCB1OCBkcGNkW0RQX1JFQ0VJ VkVSX0NBUF9TSVpFXSkgewotCWlmIChkcGNkW0RQX1RSQUlOSU5HX0FVWF9SRF9JTlRFUlZBTF0g PT0gMCkKLQkJdWRlbGF5KDQwMCk7Cit2b2lkIGRybV9kcF9saW5rX3RyYWluX2NoYW5uZWxfZXFf ZGVsYXkoY29uc3QgdTggZHBjZFtEUF9SRUNFSVZFUl9DQVBfU0laRV0pCit7CisJdW5zaWduZWQg aW50IG1pbjsKKworCWlmIChkcGNkW0RQX1RSQUlOSU5HX0FVWF9SRF9JTlRFUlZBTF0gIT0gMCkK KwkJbWluID0gZHBjZFtEUF9UUkFJTklOR19BVVhfUkRfSU5URVJWQUxdICogNDAwMDsKIAllbHNl Ci0JCW1kZWxheShkcGNkW0RQX1RSQUlOSU5HX0FVWF9SRF9JTlRFUlZBTF0gKiA0KTsKKwkJbWlu ID0gNDAwOworCisJdXNsZWVwX3JhbmdlKG1pbiwgbWluICogMik7CiB9CiBFWFBPUlRfU1lNQk9M KGRybV9kcF9saW5rX3RyYWluX2NoYW5uZWxfZXFfZGVsYXkpOwogCi0tIAoyLjUuMAoKX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KZHJpLWRldmVsIG1haWxp bmcgbGlzdApkcmktZGV2ZWxAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHA6Ly9saXN0cy5mcmVl ZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9kcmktZGV2ZWwK