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: [v2,2/3] dmaengine: at_xdmac: enhance channel errors handling in tasklet From: Nicolas Ferre Message-Id: <20190403100953.26199-2-nicolas.ferre@microchip.com> Date: Wed, 3 Apr 2019 12:09:52 +0200 To: dmaengine@vger.kernel.org, Vinod Koul Cc: Ludovic Desroches , linux-arm-kernel@lists.infradead.org, Alexandre Belloni , linux-kernel@vger.kernel.org, Nicolas Ferre List-ID: Q29tcGxlbWVudCB0aGUgaWRlbnRpZmljYXRpb24gb2YgZXJyb3JzIHdpdGggc3RvcGluZyB0aGUg Y2hhbm5lbCBhbmQKZHVtcGluZyB0aGUgZGVzY3JpcHRvciB0aGF0IGxlZCB0byB0aGUgZXJyb3Ig Y2FzZS4KClNpZ25lZC1vZmYtYnk6IE5pY29sYXMgRmVycmUgPG5pY29sYXMuZmVycmVAbWljcm9j aGlwLmNvbT4KQWNrZWQtYnk6IEx1ZG92aWMgRGVzcm9jaGVzIDxsdWRvdmljLmRlc3JvY2hlc0Bt aWNyb2NoaXAuY29tPgotLS0KdjI6IGFkZGVkIEx1ZG92aWMncyB0YWcKICAgIGFkZHJlc3MgVmlu b2QncyBjb21tZW50cyAodHlwbywgY29tbWVudCwgZW1wdHkgbGluZSBiZWZvcmUgbG9naWNhbCBi bG9ja3MpCgogZHJpdmVycy9kbWEvYXRfeGRtYWMuYyB8IDQ4ICsrKysrKysrKysrKysrKysrKysr KysrKysrKysrKysrKysrKy0tLS0tLQogMSBmaWxlIGNoYW5nZWQsIDQyIGluc2VydGlvbnMoKyks IDYgZGVsZXRpb25zKC0pCgpkaWZmIC0tZ2l0IGEvZHJpdmVycy9kbWEvYXRfeGRtYWMuYyBiL2Ry aXZlcnMvZG1hL2F0X3hkbWFjLmMKaW5kZXggMzdhMjY5NDIwNDM1Li5iNzExNzQ3NGExMGQgMTAw NjQ0Ci0tLSBhL2RyaXZlcnMvZG1hL2F0X3hkbWFjLmMKKysrIGIvZHJpdmVycy9kbWEvYXRfeGRt YWMuYwpAQCAtMTU3NSw2ICsxNTc1LDQ2IEBAIHN0YXRpYyB2b2lkIGF0X3hkbWFjX2hhbmRsZV9j eWNsaWMoc3RydWN0IGF0X3hkbWFjX2NoYW4gKmF0Y2hhbikKIAkJZG1hZW5naW5lX2Rlc2NfZ2V0 X2NhbGxiYWNrX2ludm9rZSh0eGQsIE5VTEwpOwogfQogCitzdGF0aWMgdm9pZCBhdF94ZG1hY19o YW5kbGVfZXJyb3Ioc3RydWN0IGF0X3hkbWFjX2NoYW4gKmF0Y2hhbikKK3sKKwlzdHJ1Y3QgYXRf eGRtYWMJCSphdHhkbWFjID0gdG9fYXRfeGRtYWMoYXRjaGFuLT5jaGFuLmRldmljZSk7CisJc3Ry dWN0IGF0X3hkbWFjX2Rlc2MJKmJhZF9kZXNjOworCisJLyoKKwkgKiBUaGUgZGVzY3JpcHRvciBj dXJyZW50bHkgYXQgdGhlIGhlYWQgb2YgdGhlIGFjdGl2ZSBsaXN0IGlzCisJICogYnJva2VuLiBT aW5jZSB3ZSBkb24ndCBoYXZlIGFueSB3YXkgdG8gcmVwb3J0IGVycm9ycywgd2UnbGwKKwkgKiBq dXN0IGhhdmUgdG8gc2NyZWFtIGxvdWRseSBhbmQgdHJ5IHRvIGNvbnRpbnVlIHdpdGggb3RoZXIK KwkgKiBkZXNjcmlwdG9ycyBxdWV1ZWQgKGlmIGFueSkuCisJICovCisJaWYgKGF0Y2hhbi0+aXJx X3N0YXR1cyAmIEFUX1hETUFDX0NJU19SQkVJUykKKwkJZGV2X2VycihjaGFuMmRldigmYXRjaGFu LT5jaGFuKSwgInJlYWQgYnVzIGVycm9yISEhIik7CisJaWYgKGF0Y2hhbi0+aXJxX3N0YXR1cyAm IEFUX1hETUFDX0NJU19XQkVJUykKKwkJZGV2X2VycihjaGFuMmRldigmYXRjaGFuLT5jaGFuKSwg IndyaXRlIGJ1cyBlcnJvciEhISIpOworCWlmIChhdGNoYW4tPmlycV9zdGF0dXMgJiBBVF9YRE1B Q19DSVNfUk9JUykKKwkJZGV2X2VycihjaGFuMmRldigmYXRjaGFuLT5jaGFuKSwgInJlcXVlc3Qg b3ZlcmZsb3cgZXJyb3IhISEiKTsKKworCXNwaW5fbG9ja19iaCgmYXRjaGFuLT5sb2NrKTsKKwor CS8qIENoYW5uZWwgbXVzdCBiZSBkaXNhYmxlZCBmaXJzdCBhcyBpdCdzIG5vdCBkb25lIGF1dG9t YXRpY2FsbHkgKi8KKwlhdF94ZG1hY193cml0ZShhdHhkbWFjLCBBVF9YRE1BQ19HRCwgYXRjaGFu LT5tYXNrKTsKKwl3aGlsZSAoYXRfeGRtYWNfcmVhZChhdHhkbWFjLCBBVF9YRE1BQ19HUykgJiBh dGNoYW4tPm1hc2spCisJCWNwdV9yZWxheCgpOworCisJYmFkX2Rlc2MgPSBsaXN0X2ZpcnN0X2Vu dHJ5KCZhdGNoYW4tPnhmZXJzX2xpc3QsCisJCQkJICAgIHN0cnVjdCBhdF94ZG1hY19kZXNjLAor CQkJCSAgICB4ZmVyX25vZGUpOworCisJc3Bpbl91bmxvY2tfYmgoJmF0Y2hhbi0+bG9jayk7CisK KwkvKiBQcmludCBiYWQgZGVzY3JpcHRvcidzIGRldGFpbHMgaWYgbmVlZGVkICovCisJZGV2X2Ri ZyhjaGFuMmRldigmYXRjaGFuLT5jaGFuKSwKKwkJICIlczogbGxkOiBtYnJfc2E9JXBhZCwgbWJy X2RhPSVwYWQsIG1icl91YmM9MHglMDh4XG4iLAorCQkgX19mdW5jX18sICZiYWRfZGVzYy0+bGxk Lm1icl9zYSwgJmJhZF9kZXNjLT5sbGQubWJyX2RhLAorCQkgYmFkX2Rlc2MtPmxsZC5tYnJfdWJj KTsKKworCS8qIFRoZW4gY29udGludWUgd2l0aCB1c3VhbCBkZXNjcmlwdG9yIG1hbmFnZW1lbnQg Ki8KK30KKwogc3RhdGljIHZvaWQgYXRfeGRtYWNfdGFza2xldCh1bnNpZ25lZCBsb25nIGRhdGEp CiB7CiAJc3RydWN0IGF0X3hkbWFjX2NoYW4JKmF0Y2hhbiA9IChzdHJ1Y3QgYXRfeGRtYWNfY2hh biAqKWRhdGE7CkBAIC0xNTk0LDEyICsxNjM0LDggQEAgc3RhdGljIHZvaWQgYXRfeGRtYWNfdGFz a2xldCh1bnNpZ25lZCBsb25nIGRhdGEpCiAJCSAgIHx8IChhdGNoYW4tPmlycV9zdGF0dXMgJiBl cnJvcl9tYXNrKSkgewogCQlzdHJ1Y3QgZG1hX2FzeW5jX3R4X2Rlc2NyaXB0b3IgICp0eGQ7CiAK LQkJaWYgKGF0Y2hhbi0+aXJxX3N0YXR1cyAmIEFUX1hETUFDX0NJU19SQkVJUykKLQkJCWRldl9l cnIoY2hhbjJkZXYoJmF0Y2hhbi0+Y2hhbiksICJyZWFkIGJ1cyBlcnJvciEhISIpOwotCQlpZiAo YXRjaGFuLT5pcnFfc3RhdHVzICYgQVRfWERNQUNfQ0lTX1dCRUlTKQotCQkJZGV2X2VycihjaGFu MmRldigmYXRjaGFuLT5jaGFuKSwgIndyaXRlIGJ1cyBlcnJvciEhISIpOwotCQlpZiAoYXRjaGFu LT5pcnFfc3RhdHVzICYgQVRfWERNQUNfQ0lTX1JPSVMpCi0JCQlkZXZfZXJyKGNoYW4yZGV2KCZh dGNoYW4tPmNoYW4pLCAicmVxdWVzdCBvdmVyZmxvdyBlcnJvciEhISIpOworCQlpZiAoYXRjaGFu LT5pcnFfc3RhdHVzICYgZXJyb3JfbWFzaykKKwkJCWF0X3hkbWFjX2hhbmRsZV9lcnJvcihhdGNo YW4pOwogCiAJCXNwaW5fbG9jaygmYXRjaGFuLT5sb2NrKTsKIAkJZGVzYyA9IGxpc3RfZmlyc3Rf ZW50cnkoJmF0Y2hhbi0+eGZlcnNfbGlzdCwK