From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Subject: [09/15] dmaengine: img-mdc: Handle early status read From: =?utf-8?q?Andreas_F=C3=A4rber?= Message-Id: <20180722212010.3979-10-afaerber@suse.de> Date: Sun, 22 Jul 2018 23:20:04 +0200 To: linux-mips@linux-mips.org Cc: Ralf Baechle , Paul Burton , James Hogan , linux-kernel@vger.kernel.org, Damien Horsley , =?UTF-8?q?Andreas=20F=C3=A4rber?= , Vinod Koul , Dan Williams , dmaengine@vger.kernel.org List-ID: RnJvbTogRGFtaWVuIEhvcnNsZXkgPGRhbWllbi5ob3JzbGV5QGltZ3RlYy5jb20+CgpJdCBpcyBw b3NzaWJsZSB0aGF0IG1kY190eF9zdGF0dXMgbWF5IGJlIGNhbGxlZCBiZWZvcmUgdGhlIGZpcnN0 Cm5vZGUgaGFzIGJlZW4gcmVhZCBmcm9tIG1lbW9yeS4KCkluIHRoaXMgY2FzZSwgdGhlIHJlc2lk dWUgdmFsdWUgc3RvcmVkIGluIHRoZSByZWdpc3RlciBpcyB1bmRlZmluZWQuClJldHVybiB0aGUg dHJhbnNmZXIgc2l6ZSBpbnN0ZWFkLgoKU2lnbmVkLW9mZi1ieTogRGFtaWVuIEhvcnNsZXkgPGRh bWllbi5ob3JzbGV5QGltZ3RlYy5jb20+ClNpZ25lZC1vZmYtYnk6IEFuZHJlYXMgRsOkcmJlciA8 YWZhZXJiZXJAc3VzZS5kZT4KLS0tCiBkcml2ZXJzL2RtYS9pbWctbWRjLWRtYS5jIHwgNDAgKysr KysrKysrKysrKysrKysrKysrKysrLS0tLS0tLS0tLS0tLS0tLQogMSBmaWxlIGNoYW5nZWQsIDI0 IGluc2VydGlvbnMoKyksIDE2IGRlbGV0aW9ucygtKQoKZGlmZiAtLWdpdCBhL2RyaXZlcnMvZG1h L2ltZy1tZGMtZG1hLmMgYi9kcml2ZXJzL2RtYS9pbWctbWRjLWRtYS5jCmluZGV4IDI1Y2VjOWMy NDNlMS4uMGYyZjBmNTJkODNhIDEwMDY0NAotLS0gYS9kcml2ZXJzL2RtYS9pbWctbWRjLWRtYS5j CisrKyBiL2RyaXZlcnMvZG1hL2ltZy1tZGMtZG1hLmMKQEAgLTYyMSwyNSArNjIxLDMzIEBAIHN0 YXRpYyBlbnVtIGRtYV9zdGF0dXMgbWRjX3R4X3N0YXR1cyhzdHJ1Y3QgZG1hX2NoYW4gKmNoYW4s CiAJCQkoTURDX0NNRFNfUFJPQ0VTU0VEX0NNRFNfRE9ORV9NQVNLICsgMSk7CiAKIAkJLyoKLQkJ ICogSWYgdGhlIGNvbW1hbmQgbG9hZGVkIGV2ZW50IGhhc24ndCBiZWVuIHByb2Nlc3NlZCB5ZXQs IHRoZW4KLQkJICogdGhlIGRpZmZlcmVuY2UgYWJvdmUgaW5jbHVkZXMgYW4gZXh0cmEgY29tbWFu ZC4KKwkJICogSWYgdGhlIGZpcnN0IG5vZGUgaGFzIG5vdCB5ZXQgYmVlbiByZWFkIGZyb20gbWVt b3J5LAorCQkgKiB0aGUgcmVzaWR1ZSByZWdpc3RlciB2YWx1ZSBpcyB1bmRlZmluZWQKIAkJICov Ci0JCWlmICghbWRlc2MtPmNtZF9sb2FkZWQpCi0JCQljbWRzLS07Ci0JCWVsc2UKLQkJCWNtZHMg Kz0gbWRlc2MtPmxpc3RfY21kc19kb25lOwotCi0JCWJ5dGVzID0gbWRlc2MtPmxpc3RfeGZlcl9z aXplOwotCQlsZGVzYyA9IG1kZXNjLT5saXN0OwotCQlmb3IgKGkgPSAwOyBpIDwgY21kczsgaSsr KSB7Ci0JCQlieXRlcyAtPSBsZGVzYy0+eGZlcl9zaXplICsgMTsKLQkJCWxkZXNjID0gbGRlc2Mt Pm5leHRfZGVzYzsKLQkJfQotCQlpZiAobGRlc2MpIHsKLQkJCWlmIChyZXNpZHVlICE9IE1EQ19U UkFOU0ZFUl9TSVpFX01BU0spCi0JCQkJYnl0ZXMgLT0gbGRlc2MtPnhmZXJfc2l6ZSAtIHJlc2lk dWU7CisJCWlmICghbWRlc2MtPmNtZF9sb2FkZWQgJiYgIWNtZHMpIHsKKwkJCWJ5dGVzID0gbWRl c2MtPmxpc3RfeGZlcl9zaXplOworCQl9IGVsc2UgeworCQkJLyoKKwkJCSAqIElmIHRoZSBjb21t YW5kIGxvYWRlZCBldmVudCBoYXNuJ3QgYmVlbiBwcm9jZXNzZWQgeWV0LCB0aGVuCisJCQkgKiB0 aGUgZGlmZmVyZW5jZSBhYm92ZSBpbmNsdWRlcyBhbiBleHRyYSBjb21tYW5kLgorCQkJICovCisJ CQlpZiAoIW1kZXNjLT5jbWRfbG9hZGVkKQorCQkJCWNtZHMtLTsKIAkJCWVsc2UKKwkJCQljbWRz ICs9IG1kZXNjLT5saXN0X2NtZHNfZG9uZTsKKworCQkJYnl0ZXMgPSBtZGVzYy0+bGlzdF94ZmVy X3NpemU7CisJCQlsZGVzYyA9IG1kZXNjLT5saXN0OworCQkJZm9yIChpID0gMDsgaSA8IGNtZHM7 IGkrKykgewogCQkJCWJ5dGVzIC09IGxkZXNjLT54ZmVyX3NpemUgKyAxOworCQkJCWxkZXNjID0g bGRlc2MtPm5leHRfZGVzYzsKKwkJCX0KKwkJCWlmIChsZGVzYykgeworCQkJCWlmIChyZXNpZHVl ICE9IE1EQ19UUkFOU0ZFUl9TSVpFX01BU0spCisJCQkJCWJ5dGVzIC09IGxkZXNjLT54ZmVyX3Np emUgLSByZXNpZHVlOworCQkJCWVsc2UKKwkJCQkJYnl0ZXMgLT0gbGRlc2MtPnhmZXJfc2l6ZSAr IDE7CisJCQl9CiAJCX0KIAl9CiAJc3Bpbl91bmxvY2tfaXJxcmVzdG9yZSgmbWNoYW4tPnZjLmxv Y2ssIGZsYWdzKTsK