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: [2/3] dmaengine: at_xdmac: enhance channel errors handling in tasklet From: Vinod Koul Message-Id: <20190211115834.GS4296@vkoul-mobl> Date: Mon, 11 Feb 2019 17:28:34 +0530 To: Nicolas Ferre Cc: Ludovic Desroches , linux-arm-kernel@lists.infradead.org, dmaengine@vger.kernel.org, Alexandre Belloni , linux-kernel@vger.kernel.org List-ID: T24gMDUtMDItMTksIDEyOjAzLCBOaWNvbGFzIEZlcnJlIHdyb3RlOgo+IENvbXBsZW1lbnQgdGhl IGlkZW50aWZpY2F0aW9uIG9mIGVycm9ycyB3aXRoIHN0b3BpbmcgdGhlIGNoYW5uZWwgYW5kCj4g ZHVtcGluZyB0aGUgZGVzY3JpcHRvciB0aGF0IGxlZCB0byB0aGUgZXJyb3IgY2FzZS4KPiAKPiBT aWduZWQtb2ZmLWJ5OiBOaWNvbGFzIEZlcnJlIDxuaWNvbGFzLmZlcnJlQG1pY3JvY2hpcC5jb20+ Cj4gLS0tCj4gIGRyaXZlcnMvZG1hL2F0X3hkbWFjLmMgfCA0MyArKysrKysrKysrKysrKysrKysr KysrKysrKysrKysrKysrKystLS0tLS0KPiAgMSBmaWxlIGNoYW5nZWQsIDM3IGluc2VydGlvbnMo KyksIDYgZGVsZXRpb25zKC0pCj4gCj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMvZG1hL2F0X3hkbWFj LmMgYi9kcml2ZXJzL2RtYS9hdF94ZG1hYy5jCj4gaW5kZXggMzdhMjY5NDIwNDM1Li5lYzdhMjlk OGU0NDggMTAwNjQ0Cj4gLS0tIGEvZHJpdmVycy9kbWEvYXRfeGRtYWMuYwo+ICsrKyBiL2RyaXZl cnMvZG1hL2F0X3hkbWFjLmMKPiBAQCAtMTU3NSw2ICsxNTc1LDQxIEBAIHN0YXRpYyB2b2lkIGF0 X3hkbWFjX2hhbmRsZV9jeWNsaWMoc3RydWN0IGF0X3hkbWFjX2NoYW4gKmF0Y2hhbikKPiAgCQlk bWFlbmdpbmVfZGVzY19nZXRfY2FsbGJhY2tfaW52b2tlKHR4ZCwgTlVMTCk7Cj4gIH0KPiAgCj4g K3N0YXRpYyB2b2lkIGF0X3hkbWFjX2hhbmRsZV9lcnJvcihzdHJ1Y3QgYXRfeGRtYWNfY2hhbiAq YXRjaGFuKQo+ICt7Cj4gKwlzdHJ1Y3QgYXRfeGRtYWMJCSphdHhkbWFjID0gdG9fYXRfeGRtYWMo YXRjaGFuLT5jaGFuLmRldmljZSk7Cj4gKwlzdHJ1Y3QgYXRfeGRtYWNfZGVzYwkqYmFkX2Rlc2M7 Cj4gKwo+ICsJLyoKPiArCSAqIFRoZSBkZXNjcmlwdG9yIGN1cnJlbnRseSBhdCB0aGUgaGVhZCBv ZiB0aGUgYWN0aXZlIGxpc3QgaXMKPiArCSAqIGJyb2tlZC4gU2luY2Ugd2UgZG9uJ3QgaGF2ZSBh bnkgd2F5IHRvIHJlcG9ydCBlcnJvcnMsIHdlJ2xsCgpZb3UgbWVhbnQgYm9ya2VkIG9yIGJyb2tl bi4uLiAKCj4gKwkgKiBqdXN0IGhhdmUgdG8gc2NyZWFtIGxvdWRseSBhbmQgdHJ5IHRvIGNhcnJ5 IG9uLgoKc2hvdWxkIHdlIGNhcnJ5IG9uIG9yIGFib3J0Li4/Cgo+ICsJICovCj4gKwlpZiAoYXRj aGFuLT5pcnFfc3RhdHVzICYgQVRfWERNQUNfQ0lTX1JCRUlTKQo+ICsJCWRldl9lcnIoY2hhbjJk ZXYoJmF0Y2hhbi0+Y2hhbiksICJyZWFkIGJ1cyBlcnJvciEhISIpOwo+ICsJaWYgKGF0Y2hhbi0+ aXJxX3N0YXR1cyAmIEFUX1hETUFDX0NJU19XQkVJUykKPiArCQlkZXZfZXJyKGNoYW4yZGV2KCZh dGNoYW4tPmNoYW4pLCAid3JpdGUgYnVzIGVycm9yISEhIik7Cj4gKwlpZiAoYXRjaGFuLT5pcnFf c3RhdHVzICYgQVRfWERNQUNfQ0lTX1JPSVMpCj4gKwkJZGV2X2VycihjaGFuMmRldigmYXRjaGFu LT5jaGFuKSwgInJlcXVlc3Qgb3ZlcmZsb3cgZXJyb3IhISEiKTsKPiArCj4gKwlzcGluX2xvY2tf YmgoJmF0Y2hhbi0+bG9jayk7Cj4gKwkvKiBDaGFubmVsIG11c3QgYmUgZGlzYWJsZWQgZmlyc3Qg YXMgaXQncyBub3QgZG9uZSBhdXRvbWF0aWNhbGx5ICovCj4gKwlhdF94ZG1hY193cml0ZShhdHhk bWFjLCBBVF9YRE1BQ19HRCwgYXRjaGFuLT5tYXNrKTsKPiArCXdoaWxlIChhdF94ZG1hY19yZWFk KGF0eGRtYWMsIEFUX1hETUFDX0dTKSAmIGF0Y2hhbi0+bWFzaykKPiArCQljcHVfcmVsYXgoKTsK PiArCWJhZF9kZXNjID0gbGlzdF9maXJzdF9lbnRyeSgmYXRjaGFuLT54ZmVyc19saXN0LAo+ICsJ CQkJICAgIHN0cnVjdCBhdF94ZG1hY19kZXNjLAo+ICsJCQkJICAgIHhmZXJfbm9kZSk7Cj4gKwlz cGluX3VubG9ja19iaCgmYXRjaGFuLT5sb2NrKTsKPiArCS8qIFByaW50IGJhZCBkZXNjcmlwdG9y J3MgZGV0YWlscyBpZiBuZWVkZWQgKi8KCldlbGwgdGhpcyBpcyBub3QgZ3JlYXQgdG8gbG9vayBh bmQgcmVhZCBhdCwgcGxlYXNlIGRvIGNvbnNpZGVyIGFkZGluZwplbXB0eSBsaW5lIGJlZm9yZSBj b21tZW50cyBvciBsb2dpY2FsIGJsb2Nrcy4uCgo+ICsJZGV2X2RiZyhjaGFuMmRldigmYXRjaGFu LT5jaGFuKSwKPiArCQkgIiVzOiBsbGQ6IG1icl9zYT0lcGFkLCBtYnJfZGE9JXBhZCwgbWJyX3Vi Yz0weCUwOHhcbiIsCj4gKwkJIF9fZnVuY19fLCAmYmFkX2Rlc2MtPmxsZC5tYnJfc2EsICZiYWRf ZGVzYy0+bGxkLm1icl9kYSwKPiArCQkgYmFkX2Rlc2MtPmxsZC5tYnJfdWJjKTsKCm5vdCBkZXZf ZXJyPwoKPiArCj4gKwkvKiBUaGVuIGNvbnRpbnVlIHdpdGggdXN1YWwgZGVzY3JpcHRvciBtYW5h Z2VtZW50ICovCj4gK30KPiArCj4gIHN0YXRpYyB2b2lkIGF0X3hkbWFjX3Rhc2tsZXQodW5zaWdu ZWQgbG9uZyBkYXRhKQo+ICB7Cj4gIAlzdHJ1Y3QgYXRfeGRtYWNfY2hhbgkqYXRjaGFuID0gKHN0 cnVjdCBhdF94ZG1hY19jaGFuICopZGF0YTsKPiBAQCAtMTU5NCwxMiArMTYyOSw4IEBAIHN0YXRp YyB2b2lkIGF0X3hkbWFjX3Rhc2tsZXQodW5zaWduZWQgbG9uZyBkYXRhKQo+ICAJCSAgIHx8IChh dGNoYW4tPmlycV9zdGF0dXMgJiBlcnJvcl9tYXNrKSkgewo+ICAJCXN0cnVjdCBkbWFfYXN5bmNf dHhfZGVzY3JpcHRvciAgKnR4ZDsKPiAgCj4gLQkJaWYgKGF0Y2hhbi0+aXJxX3N0YXR1cyAmIEFU X1hETUFDX0NJU19SQkVJUykKPiAtCQkJZGV2X2VycihjaGFuMmRldigmYXRjaGFuLT5jaGFuKSwg InJlYWQgYnVzIGVycm9yISEhIik7Cj4gLQkJaWYgKGF0Y2hhbi0+aXJxX3N0YXR1cyAmIEFUX1hE TUFDX0NJU19XQkVJUykKPiAtCQkJZGV2X2VycihjaGFuMmRldigmYXRjaGFuLT5jaGFuKSwgIndy aXRlIGJ1cyBlcnJvciEhISIpOwo+IC0JCWlmIChhdGNoYW4tPmlycV9zdGF0dXMgJiBBVF9YRE1B Q19DSVNfUk9JUykKPiAtCQkJZGV2X2VycihjaGFuMmRldigmYXRjaGFuLT5jaGFuKSwgInJlcXVl c3Qgb3ZlcmZsb3cgZXJyb3IhISEiKTsKPiArCQlpZiAoYXRjaGFuLT5pcnFfc3RhdHVzICYgZXJy b3JfbWFzaykKPiArCQkJYXRfeGRtYWNfaGFuZGxlX2Vycm9yKGF0Y2hhbik7Cj4gIAo+ICAJCXNw aW5fbG9jaygmYXRjaGFuLT5sb2NrKTsKPiAgCQlkZXNjID0gbGlzdF9maXJzdF9lbnRyeSgmYXRj aGFuLT54ZmVyc19saXN0LAo+IC0tIAo+IDIuMTcuMQo=