From mboxrd@z Thu Jan 1 00:00:00 1970 From: Zhouyang Jia Subject: [PATCH] scsi: xen-scsifront: add error handling for xenbus_printf Date: Tue, 12 Jun 2018 11:42:42 +0800 Message-ID: <1528774962-39173-1-git-send-email-jiazhouyang09__26081.16398701$1528780275$gmane$org@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1fSaCo-0008IP-Gi for xen-devel@lists.xenproject.org; Tue, 12 Jun 2018 03:42:50 +0000 Received: by mail-pf0-x243.google.com with SMTP id a11-v6so11342022pff.8 for ; Mon, 11 Jun 2018 20:42:48 -0700 (PDT) List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" Cc: Juergen Gross , "James E.J. Bottomley" , linux-scsi@vger.kernel.org, "Martin K. Petersen" , linux-kernel@vger.kernel.org, xen-devel@lists.xenproject.org, Boris Ostrovsky , Zhouyang Jia List-Id: xen-devel@lists.xenproject.org V2hlbiB4ZW5idXNfcHJpbnRmIGZhaWxzLCB0aGUgbGFjayBvZiBlcnJvci1oYW5kbGluZyBjb2Rl IG1heQpjYXVzZSB1bmV4cGVjdGVkIHJlc3VsdHMuCgpUaGlzIHBhdGNoIGFkZHMgZXJyb3ItaGFu ZGxpbmcgY29kZSBhZnRlciBjYWxsaW5nIHhlbmJ1c19wcmludGYuCgpTaWduZWQtb2ZmLWJ5OiBa aG91eWFuZyBKaWEgPGppYXpob3V5YW5nMDlAZ21haWwuY29tPgotLS0KIGRyaXZlcnMvc2NzaS94 ZW4tc2NzaWZyb250LmMgfCAzMSArKysrKysrKysrKysrKysrKysrKysrKystLS0tLS0tCiAxIGZp bGUgY2hhbmdlZCwgMjQgaW5zZXJ0aW9ucygrKSwgNyBkZWxldGlvbnMoLSkKCmRpZmYgLS1naXQg YS9kcml2ZXJzL3Njc2kveGVuLXNjc2lmcm9udC5jIGIvZHJpdmVycy9zY3NpL3hlbi1zY3NpZnJv bnQuYwppbmRleCAzNmY1OWExLi4zZDg1OGFjIDEwMDY0NAotLS0gYS9kcml2ZXJzL3Njc2kveGVu LXNjc2lmcm9udC5jCisrKyBiL2RyaXZlcnMvc2NzaS94ZW4tc2NzaWZyb250LmMKQEAgLTY1NCwx MCArNjU0LDE3IEBAIHN0YXRpYyBpbnQgc2NzaWZyb250X2Rldl9yZXNldF9oYW5kbGVyKHN0cnVj dCBzY3NpX2NtbmQgKnNjKQogc3RhdGljIGludCBzY3NpZnJvbnRfc2Rldl9jb25maWd1cmUoc3Ry dWN0IHNjc2lfZGV2aWNlICpzZGV2KQogewogCXN0cnVjdCB2c2NzaWZybnRfaW5mbyAqaW5mbyA9 IHNob3N0X3ByaXYoc2Rldi0+aG9zdCk7CisJc3RydWN0IHhlbmJ1c19kZXZpY2UgKmRldiA9IGlu Zm8tPmRldjsKKwlpbnQgZXJyOwogCi0JaWYgKGluZm8gJiYgY3VycmVudCA9PSBpbmZvLT5jdXJy KQotCQl4ZW5idXNfcHJpbnRmKFhCVF9OSUwsIGluZm8tPmRldi0+bm9kZW5hbWUsCisJaWYgKGlu Zm8gJiYgY3VycmVudCA9PSBpbmZvLT5jdXJyKSB7CisJCWVyciA9IHhlbmJ1c19wcmludGYoWEJU X05JTCwgaW5mby0+ZGV2LT5ub2RlbmFtZSwKIAkJCSAgICAgIGluZm8tPmRldl9zdGF0ZV9wYXRo LCAiJWQiLCBYZW5idXNTdGF0ZUNvbm5lY3RlZCk7CisJCWlmIChlcnIpIHsKKwkJCWRldl9lcnIo JmRldi0+ZGV2LCAid3JpdGluZyBkZXZfc3RhdGVfcGF0aFxuIik7CisJCQlyZXR1cm4gZXJyOwor CQl9CisJfQogCiAJcmV0dXJuIDA7CiB9CkBAIC02NjUsMTAgKzY3MiwxNSBAQCBzdGF0aWMgaW50 IHNjc2lmcm9udF9zZGV2X2NvbmZpZ3VyZShzdHJ1Y3Qgc2NzaV9kZXZpY2UgKnNkZXYpCiBzdGF0 aWMgdm9pZCBzY3NpZnJvbnRfc2Rldl9kZXN0cm95KHN0cnVjdCBzY3NpX2RldmljZSAqc2RldikK IHsKIAlzdHJ1Y3QgdnNjc2lmcm50X2luZm8gKmluZm8gPSBzaG9zdF9wcml2KHNkZXYtPmhvc3Qp OworCXN0cnVjdCB4ZW5idXNfZGV2aWNlICpkZXYgPSBpbmZvLT5kZXY7CisJaW50IGVycjsKIAot CWlmIChpbmZvICYmIGN1cnJlbnQgPT0gaW5mby0+Y3VycikKLQkJeGVuYnVzX3ByaW50ZihYQlRf TklMLCBpbmZvLT5kZXYtPm5vZGVuYW1lLAorCWlmIChpbmZvICYmIGN1cnJlbnQgPT0gaW5mby0+ Y3VycikgeworCQllcnIgPSB4ZW5idXNfcHJpbnRmKFhCVF9OSUwsIGluZm8tPmRldi0+bm9kZW5h bWUsCiAJCQkgICAgICBpbmZvLT5kZXZfc3RhdGVfcGF0aCwgIiVkIiwgWGVuYnVzU3RhdGVDbG9z ZWQpOworCQlpZiAoZXJyKQorCQkJZGV2X2VycigmZGV2LT5kZXYsICJ3cml0aW5nIGRldl9zdGF0 ZV9wYXRoXG4iKTsKKwl9CiB9CiAKIHN0YXRpYyBzdHJ1Y3Qgc2NzaV9ob3N0X3RlbXBsYXRlIHNj c2lmcm9udF9zaHQgPSB7CkBAIC0xMDAzLDkgKzEwMTUsMTEgQEAgc3RhdGljIHZvaWQgc2NzaWZy b250X2RvX2x1bl9ob3RwbHVnKHN0cnVjdCB2c2NzaWZybnRfaW5mbyAqaW5mbywgaW50IG9wKQog CiAJCQlpZiAoc2NzaV9hZGRfZGV2aWNlKGluZm8tPmhvc3QsIGNobiwgdGd0LCBsdW4pKSB7CiAJ CQkJZGV2X2VycigmZGV2LT5kZXYsICJzY3NpX2FkZF9kZXZpY2VcbiIpOwotCQkJCXhlbmJ1c19w cmludGYoWEJUX05JTCwgZGV2LT5ub2RlbmFtZSwKKwkJCQllcnIgPSB4ZW5idXNfcHJpbnRmKFhC VF9OSUwsIGRldi0+bm9kZW5hbWUsCiAJCQkJCSAgICAgIGluZm8tPmRldl9zdGF0ZV9wYXRoLAog CQkJCQkgICAgICAiJWQiLCBYZW5idXNTdGF0ZUNsb3NlZCk7CisJCQkJaWYgKGVycikKKwkJCQkJ ZGV2X2VycigmZGV2LT5kZXYsICJ3cml0aW5nIGRldl9zdGF0ZV9wYXRoXG4iKTsKIAkJCX0KIAkJ CWJyZWFrOwogCQljYXNlIFZTQ1NJRlJPTlRfT1BfREVMX0xVTjoKQEAgLTEwMTksMTAgKzEwMzMs MTMgQEAgc3RhdGljIHZvaWQgc2NzaWZyb250X2RvX2x1bl9ob3RwbHVnKHN0cnVjdCB2c2NzaWZy bnRfaW5mbyAqaW5mbywgaW50IG9wKQogCQkJfQogCQkJYnJlYWs7CiAJCWNhc2UgVlNDU0lGUk9O VF9PUF9SRUFERF9MVU46Ci0JCQlpZiAoZGV2aWNlX3N0YXRlID09IFhlbmJ1c1N0YXRlQ29ubmVj dGVkKQotCQkJCXhlbmJ1c19wcmludGYoWEJUX05JTCwgZGV2LT5ub2RlbmFtZSwKKwkJCWlmIChk ZXZpY2Vfc3RhdGUgPT0gWGVuYnVzU3RhdGVDb25uZWN0ZWQpIHsKKwkJCQllcnIgPSB4ZW5idXNf cHJpbnRmKFhCVF9OSUwsIGRldi0+bm9kZW5hbWUsCiAJCQkJCSAgICAgIGluZm8tPmRldl9zdGF0 ZV9wYXRoLAogCQkJCQkgICAgICAiJWQiLCBYZW5idXNTdGF0ZUNvbm5lY3RlZCk7CisJCQkJaWYg KGVycikKKwkJCQkJZGV2X2VycigmZGV2LT5kZXYsICJ3cml0aW5nIGRldl9zdGF0ZV9wYXRoXG4i KTsKKwkJCX0KIAkJCWJyZWFrOwogCQlkZWZhdWx0OgogCQkJYnJlYWs7Ci0tIAoyLjcuNAoKCl9f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fClhlbi1kZXZlbCBt YWlsaW5nIGxpc3QKWGVuLWRldmVsQGxpc3RzLnhlbnByb2plY3Qub3JnCmh0dHBzOi8vbGlzdHMu eGVucHJvamVjdC5vcmcvbWFpbG1hbi9saXN0aW5mby94ZW4tZGV2ZWw=