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: [v3,2/3] dmaengine: at_xdmac: enhance channel errors handling in tasklet From: Nicolas Ferre Message-Id: <20190403102359.27698-2-nicolas.ferre@microchip.com> Date: Wed, 3 Apr 2019 12:23:58 +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: Q29tcGxlbWVudCB0aGUgaWRlbnRpZmljYXRpb24gb2YgZXJyb3JzIHdpdGggc3RvcHBpbmcgdGhl IGNoYW5uZWwgYW5kCmR1bXBpbmcgdGhlIGRlc2NyaXB0b3IgdGhhdCBsZWQgdG8gdGhlIGVycm9y IGNhc2UuCgpTaWduZWQtb2ZmLWJ5OiBOaWNvbGFzIEZlcnJlIDxuaWNvbGFzLmZlcnJlQG1pY3Jv Y2hpcC5jb20+CkFja2VkLWJ5OiBMdWRvdmljIERlc3JvY2hlcyA8bHVkb3ZpYy5kZXNyb2NoZXNA bWljcm9jaGlwLmNvbT4KLS0tCnYzOiBUeXBvIGluIGNvbW1pdCBtZXNzYWdlLCBhbGlnbm1lbnQg aW4gbXVsdGktbGluZSBkZXZfZGJnKCkKdjI6IGFkZGVkIEx1ZG92aWMncyB0YWcKICAgIGFkZHJl c3MgVmlub2QncyBjb21tZW50cyAodHlwbywgY29tbWVudCwgZW1wdHkgbGluZSBiZWZvcmUgbG9n aWNhbCBibG9ja3MpCgogZHJpdmVycy9kbWEvYXRfeGRtYWMuYyB8IDQ4ICsrKysrKysrKysrKysr KysrKysrKysrKysrKysrKysrKysrKy0tLS0tLQogMSBmaWxlIGNoYW5nZWQsIDQyIGluc2VydGlv bnMoKyksIDYgZGVsZXRpb25zKC0pCgpkaWZmIC0tZ2l0IGEvZHJpdmVycy9kbWEvYXRfeGRtYWMu YyBiL2RyaXZlcnMvZG1hL2F0X3hkbWFjLmMKaW5kZXggMzdhMjY5NDIwNDM1Li4xZGQ3ZWRhZWZi ZGMgMTAwNjQ0Ci0tLSBhL2RyaXZlcnMvZG1hL2F0X3hkbWFjLmMKKysrIGIvZHJpdmVycy9kbWEv YXRfeGRtYWMuYwpAQCAtMTU3NSw2ICsxNTc1LDQ2IEBAIHN0YXRpYyB2b2lkIGF0X3hkbWFjX2hh bmRsZV9jeWNsaWMoc3RydWN0IGF0X3hkbWFjX2NoYW4gKmF0Y2hhbikKIAkJZG1hZW5naW5lX2Rl c2NfZ2V0X2NhbGxiYWNrX2ludm9rZSh0eGQsIE5VTEwpOwogfQogCitzdGF0aWMgdm9pZCBhdF94 ZG1hY19oYW5kbGVfZXJyb3Ioc3RydWN0IGF0X3hkbWFjX2NoYW4gKmF0Y2hhbikKK3sKKwlzdHJ1 Y3QgYXRfeGRtYWMJCSphdHhkbWFjID0gdG9fYXRfeGRtYWMoYXRjaGFuLT5jaGFuLmRldmljZSk7 CisJc3RydWN0IGF0X3hkbWFjX2Rlc2MJKmJhZF9kZXNjOworCisJLyoKKwkgKiBUaGUgZGVzY3Jp cHRvciBjdXJyZW50bHkgYXQgdGhlIGhlYWQgb2YgdGhlIGFjdGl2ZSBsaXN0IGlzCisJICogYnJv a2VuLiBTaW5jZSB3ZSBkb24ndCBoYXZlIGFueSB3YXkgdG8gcmVwb3J0IGVycm9ycywgd2UnbGwK KwkgKiBqdXN0IGhhdmUgdG8gc2NyZWFtIGxvdWRseSBhbmQgdHJ5IHRvIGNvbnRpbnVlIHdpdGgg b3RoZXIKKwkgKiBkZXNjcmlwdG9ycyBxdWV1ZWQgKGlmIGFueSkuCisJICovCisJaWYgKGF0Y2hh bi0+aXJxX3N0YXR1cyAmIEFUX1hETUFDX0NJU19SQkVJUykKKwkJZGV2X2VycihjaGFuMmRldigm YXRjaGFuLT5jaGFuKSwgInJlYWQgYnVzIGVycm9yISEhIik7CisJaWYgKGF0Y2hhbi0+aXJxX3N0 YXR1cyAmIEFUX1hETUFDX0NJU19XQkVJUykKKwkJZGV2X2VycihjaGFuMmRldigmYXRjaGFuLT5j aGFuKSwgIndyaXRlIGJ1cyBlcnJvciEhISIpOworCWlmIChhdGNoYW4tPmlycV9zdGF0dXMgJiBB VF9YRE1BQ19DSVNfUk9JUykKKwkJZGV2X2VycihjaGFuMmRldigmYXRjaGFuLT5jaGFuKSwgInJl cXVlc3Qgb3ZlcmZsb3cgZXJyb3IhISEiKTsKKworCXNwaW5fbG9ja19iaCgmYXRjaGFuLT5sb2Nr KTsKKworCS8qIENoYW5uZWwgbXVzdCBiZSBkaXNhYmxlZCBmaXJzdCBhcyBpdCdzIG5vdCBkb25l IGF1dG9tYXRpY2FsbHkgKi8KKwlhdF94ZG1hY193cml0ZShhdHhkbWFjLCBBVF9YRE1BQ19HRCwg YXRjaGFuLT5tYXNrKTsKKwl3aGlsZSAoYXRfeGRtYWNfcmVhZChhdHhkbWFjLCBBVF9YRE1BQ19H UykgJiBhdGNoYW4tPm1hc2spCisJCWNwdV9yZWxheCgpOworCisJYmFkX2Rlc2MgPSBsaXN0X2Zp cnN0X2VudHJ5KCZhdGNoYW4tPnhmZXJzX2xpc3QsCisJCQkJICAgIHN0cnVjdCBhdF94ZG1hY19k ZXNjLAorCQkJCSAgICB4ZmVyX25vZGUpOworCisJc3Bpbl91bmxvY2tfYmgoJmF0Y2hhbi0+bG9j ayk7CisKKwkvKiBQcmludCBiYWQgZGVzY3JpcHRvcidzIGRldGFpbHMgaWYgbmVlZGVkICovCisJ ZGV2X2RiZyhjaGFuMmRldigmYXRjaGFuLT5jaGFuKSwKKwkJIiVzOiBsbGQ6IG1icl9zYT0lcGFk LCBtYnJfZGE9JXBhZCwgbWJyX3ViYz0weCUwOHhcbiIsCisJCV9fZnVuY19fLCAmYmFkX2Rlc2Mt PmxsZC5tYnJfc2EsICZiYWRfZGVzYy0+bGxkLm1icl9kYSwKKwkJYmFkX2Rlc2MtPmxsZC5tYnJf dWJjKTsKKworCS8qIFRoZW4gY29udGludWUgd2l0aCB1c3VhbCBkZXNjcmlwdG9yIG1hbmFnZW1l bnQgKi8KK30KKwogc3RhdGljIHZvaWQgYXRfeGRtYWNfdGFza2xldCh1bnNpZ25lZCBsb25nIGRh dGEpCiB7CiAJc3RydWN0IGF0X3hkbWFjX2NoYW4JKmF0Y2hhbiA9IChzdHJ1Y3QgYXRfeGRtYWNf Y2hhbiAqKWRhdGE7CkBAIC0xNTk0LDEyICsxNjM0LDggQEAgc3RhdGljIHZvaWQgYXRfeGRtYWNf dGFza2xldCh1bnNpZ25lZCBsb25nIGRhdGEpCiAJCSAgIHx8IChhdGNoYW4tPmlycV9zdGF0dXMg JiBlcnJvcl9tYXNrKSkgewogCQlzdHJ1Y3QgZG1hX2FzeW5jX3R4X2Rlc2NyaXB0b3IgICp0eGQ7 CiAKLQkJaWYgKGF0Y2hhbi0+aXJxX3N0YXR1cyAmIEFUX1hETUFDX0NJU19SQkVJUykKLQkJCWRl dl9lcnIoY2hhbjJkZXYoJmF0Y2hhbi0+Y2hhbiksICJyZWFkIGJ1cyBlcnJvciEhISIpOwotCQlp ZiAoYXRjaGFuLT5pcnFfc3RhdHVzICYgQVRfWERNQUNfQ0lTX1dCRUlTKQotCQkJZGV2X2Vycihj aGFuMmRldigmYXRjaGFuLT5jaGFuKSwgIndyaXRlIGJ1cyBlcnJvciEhISIpOwotCQlpZiAoYXRj aGFuLT5pcnFfc3RhdHVzICYgQVRfWERNQUNfQ0lTX1JPSVMpCi0JCQlkZXZfZXJyKGNoYW4yZGV2 KCZhdGNoYW4tPmNoYW4pLCAicmVxdWVzdCBvdmVyZmxvdyBlcnJvciEhISIpOworCQlpZiAoYXRj aGFuLT5pcnFfc3RhdHVzICYgZXJyb3JfbWFzaykKKwkJCWF0X3hkbWFjX2hhbmRsZV9lcnJvcihh dGNoYW4pOwogCiAJCXNwaW5fbG9jaygmYXRjaGFuLT5sb2NrKTsKIAkJZGVzYyA9IGxpc3RfZmly c3RfZW50cnkoJmF0Y2hhbi0+eGZlcnNfbGlzdCwK