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: dmaengine: rcar-dmac: clear channel register when error From: Laurent Pinchart Message-Id: <2150046.r5M1qlqddB@avalon> Date: Mon, 02 Jul 2018 09:37:28 +0300 To: Kuninori Morimoto Cc: Vinod , Geert Uytterhoeven , Dan Williams , Magnus Damm , Linux-Renesas , Kieran Bingham , Geert Uytterhoeven , dmaengine@vger.kernel.org List-ID: SGkgTW9yaW1vdG8tc2FuLAoKVGhhbmsgeW91IGZvciB0aGUgcGF0Y2guCgpPbiBNb25kYXksIDIg SnVseSAyMDE4IDA0OjA3OjE3IEVFU1QgS3VuaW5vcmkgTW9yaW1vdG8gd3JvdGU6Cj4gRnJvbTog S3VuaW5vcmkgTW9yaW1vdG8gPGt1bmlub3JpLm1vcmltb3RvLmd4QHJlbmVzYXMuY29tPgo+IAo+ IFdlIG5lZWQgdG8gY2xlYXIgY2hhbm5lbCByZWdpc3RlciBpbiBlcnJvciBjYXNlIGFzIHJlY292 ZXJ5Lgo+IFRoZSBjaGFubmVsIGlzIGFscmVhZHkgc3RvcHBlZCBpbiBzdWNoIGNhc2UsIHRodXMg d2UgZG9uJ3QgbmVlZCB0byBjYWxsCj4gcmNhcl9kbWFjX2NoYW5faGFsdCgpIGJlZm9yZSBjbGVh cmluZy4KPiAKPiByY2FyX2RtYWNfY2hhbl9oYWx0KCkgd2lsbCBjbGVhciByZWdpc3RlciBhbmQg Y29uZmlybSBERSBiaXQuCj4gQnV0IGl0IHdpbGwgYmUgZmFpbGVkIGJlY2F1c2UgY2hhbm5lbCBp cyBhbHJlYWR5IHN0b3BwZWQgaW4gZXJyb3IgY2FzZS4KPiBJbiBvdGhlciB3b3Jkcywgd2Ugc2hv dWxkbid0IGNhbGwgaXQgdGhlbi4KPiAKPiAvLyBUaGlzIHBhdGNoIHN0YXJ0ZWQgdG8gdXNlIEMr KyBzdHlsZSBjb21tZW50IG91dAo+IC8vIGJlY2F1c2UgaXQgaXMgcmVjZW50IExpbnVzIHJlcXVl c3QKCkkgZmVhciB0aGlzIHdpbGwgZ2VuZXJhdGUgbG90cyBvZiBmcnVzdHJhdGlvbiA6LS8gV2hp bGUgSSBzdHJvbmdseSBwcmVmZXIgdGhlIAp0cmFkaXRpb25hbCBDIHN0eWxlLCBJJ20gZmluZSBs ZWF2aW5nIHRoZSBjaG9pY2UgdG8gZHJpdmVyIGF1dGhvcnMuIEhvd2V2ZXIsIEkgCnRoaW5rIHRo YXQgbWl4aW5nIGRpZmZlcmVudCBzdHlsZXMgaW4gdGhlIHNhbWUgZmlsZSBvbmx5IGhpbmRlcnMg cmVhZGFiaWxpdHkuIApXb3VsZCB5b3UgbGlrZSB0byBjb252ZXJ0IHRoZSB3aG9sZSBmaWxlID8g Oy0pCgo+IFJlcG9ydGVkLWJ5OiBIaXJva2kgTmVnaXNoaSA8aGlyb2tpLm5lZ2lzaGkuYnhAcmVu ZXNhcy5jb20+Cj4gU2lnbmVkLW9mZi1ieTogS3VuaW5vcmkgTW9yaW1vdG8gPGt1bmlub3JpLm1v cmltb3RvLmd4QHJlbmVzYXMuY29tPgo+IFJldmlld2VkLWJ5OiBIaXJva2kgTmVnaXNoaSA8aGly b2tpLm5lZ2lzaGkuYnhAcmVuZXNhcy5jb20+Cj4gLS0tCj4gIGRyaXZlcnMvZG1hL3NoL3JjYXIt ZG1hYy5jIHwgOCArKysrKysrLQo+ICAxIGZpbGUgY2hhbmdlZCwgNyBpbnNlcnRpb25zKCspLCAx IGRlbGV0aW9uKC0pCj4gCj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMvZG1hL3NoL3JjYXItZG1hYy5j IGIvZHJpdmVycy9kbWEvc2gvcmNhci1kbWFjLmMKPiBpbmRleCAyNzljOTMwLi4zNWQ3YTE2IDEw MDY0NAo+IC0tLSBhL2RyaXZlcnMvZG1hL3NoL3JjYXItZG1hYy5jCj4gKysrIGIvZHJpdmVycy9k bWEvc2gvcmNhci1kbWFjLmMKPiBAQCAtMTUyNSw3ICsxNTI1LDEzIEBAIHN0YXRpYyBpcnFyZXR1 cm5fdCByY2FyX2RtYWNfaXNyX2NoYW5uZWwoaW50IGlycSwKPiB2b2lkICpkZXYpCj4gCj4gIAlj aGNyID0gcmNhcl9kbWFjX2NoYW5fcmVhZChjaGFuLCBSQ0FSX0RNQUNIQ1IpOwo+ICAJaWYgKGNo Y3IgJiBSQ0FSX0RNQUNIQ1JfQ0FFKSB7Cj4gLQkJcmNhcl9kbWFjX2NoYW5faGFsdChjaGFuKTsK PiArCQlzdHJ1Y3QgcmNhcl9kbWFjICpkbWFjID0gZGV2X2dldF9kcnZkYXRhKGNoYW4tPmNoYW4u ZGV2aWNlLT5kZXYpOwoKVGhpcyBjb3VsZCBiZSBzaW1wbGlmaWVkIHdpdGgKCgkJc3RydWN0IHJj YXJfZG1hYyAqZG1hYyA9IHRvX3JjYXJfZG1hYyhjaGFuLT5jaGFuLmRldmljZSk7Cgo+ICsKPiAr CQkvLyBXZSBkb24ndCBuZWVkIHRvIGNhbGwgcmNhcl9kbWFjX2NoYW5faGFsdCgpCj4gKwkJLy8g YmVjYXVzZSBjaGFubmVsIGlzIGFscmVhZHkgc3RvcHBlZCBpbiBlcnJvciBjYXNlLgo+ICsJCS8v IFdlIG5lZWQgdG8gY2xlYXIgcmVnaXN0ZXIgYW5kIGNoZWNrIERFIGJpdCBhcyByZWNvdmVyeS4K CklzIGl0IGFsc28gYSByZXF1ZXN0IGZyb20gTGludXMgdG8gd3JhcCB0ZXh0IG11Y2ggYmVmb3Jl IHRoZSA4MCBjaGFyYWN0ZXJzIApsaW1pdCA/IDotKQoKPiArCQlyY2FyX2RtYWNfd3JpdGUoZG1h YywgUkNBUl9ETUFDSENMUiwgMSA8PCBjaGFuLT5pbmRleCk7Cj4gKwkJcmNhcl9kbWFjX2NoY3Jf ZGVfYmFycmllcihjaGFuKTsKPiAgCQlyZWluaXQgPSB0cnVlOwo+ICAJCWdvdG8gc3Bpbl9sb2Nr X2VuZDsKPiAgCX0K