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: at_xdmac: Fix wrongfull report of a channel as in use From: Vinod Koul Message-Id: <20190123121641.GN4635@vkoul-mobl> Date: Wed, 23 Jan 2019 17:46:41 +0530 To: Codrin.Ciubotariu@microchip.com Cc: Ludovic.Desroches@microchip.com, dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org List-ID: T24gMjEtMDEtMTksIDE0OjM4LCBDb2RyaW4uQ2l1Ym90YXJpdUBtaWNyb2NoaXAuY29tIHdyb3Rl Ogo+IE9uIDIwLjAxLjIwMTkgMTM6MDQsIFZpbm9kIEtvdWwgd3JvdGU6Cj4gPiBIaSBDb2RyaW4s Cj4gPiAKPiA+IE9uIDE3LTAxLTE5LCAxNjoxMCwgQ29kcmluLkNpdWJvdGFyaXVAbWljcm9jaGlw LmNvbSB3cm90ZToKPiA+PiBGcm9tOiBDb2RyaW4gQ2l1Ym90YXJpdSA8Y29kcmluLmNpdWJvdGFy aXVAbWljcm9jaGlwLmNvbT4KPiA+Pgo+ID4+IGF0Y2hhbi0+c3RhdHVzIGlzIHVzZWQgZm9yIHR3 byB0aGluZ3M6Cj4gPj4gICAtIHBhc3MgY2hhbm5lbCBpbnRlcnJ1cHRzIHN0YXR1cyBmcm9tIGlu dGVycnVwdCBoYW5kbGVyIHRvIHRhc2tsZXQ7Cj4gPj4gICAtIGNoYW5uZWwgaW5mb3JtYXRpb24g bGlrZSB3aGV0aGVyIGl0IGlzIGN5Y2xpYyBvciBwYXVzZWQ7Cj4gPj4KPiA+PiBTaW5jZSB0aGVz ZSBvcGVyYXRpb25zIGhhdmUgbm90aGluZyBpbiBjb21tb24sIHRoaXMgcGF0Y2ggYWRkcyBhCj4g Pj4gZGlmZmVyZW50IHN0cnVjdCBtZW1iZXIgdG8ga2VlcCB0aGUgaW50ZXJydXB0cyBzdGF0dXMu Cj4gPj4KPiA+PiBGaXhlcyBhIGJ1ZyBpbiB3aGljaCBhIGNoYW5uZWwgaXMgd3JvbmdmdWxseSBy ZXBvcnRlZCBhcyBpbiB1c2Ugd2hlbgo+ID4+IHRyeWluZyB0byBvYnRhaW4gYSBuZXcgZGVzY3Jp cHRpb3IgZm9yIGEgcHJldmlvdXNseSB1c2VkIGN5Y2xpYyBjaGFubmVsLgo+ID4gCj4gPiBUaGlz IGxvb2tzIHJlYXNvbmFibGUgYnV0IGFtIHVuYWJsZSB0byBzZWUgaG93IHRoZSBidWcgaXMgZml4 ZWQuIFBlcmhhcHMKPiA+IHdvdWxkIGJlIGdyZWF0IHRvIHNwbGl0IHRoZSBidWcgcGFydCAod2hp Y2ggY2FuIGdvIHRvIGZpeGVzKSBhbmQgcmVtb3ZlCj4gPiB0aGUgcmV1c2Ugb2YgdmFyaWFibGUg YXMgYSBzdWJzZXF1ZW50IHBhdGNoLi4KPiAKPiBIaSBWaW5vZCwKPiAKPiBUaGlzIHBhdGNoIGlz IHRoZSBmaXgsIHNpbmNlIGl0IG1vdmVzIHRoZSBvcGVyYXRpb25zIG9uIGF0Y2hhbi0+c3RhdHVz LCAKPiBpbiB3aGljaCB0aGUgaW50ZXJydXB0IHN0YXR1cyByZWdpc3RlciBpcyBzYXZlZCwgdG8g YSBkaWZmZXJlbnQgbWVtYmVyIAo+IChpcnFfc3RhdHVzKS4gVGhlIEFUX1hETUFDX0NIQU5fSVNf Q1lDTElDIGFuZCBBVF9YRE1BQ19DSEFOX0lTX1BBVVNFRCAKPiBiaXRzIGhhdmUgbm90aGluZyBp biBjb21tb24gd2l0aCB0aGUgaW50ZXJydXB0IHN0YXR1cyByZWdpc3Rlci4KPiAKPiBUaGUgYnVn IHJlcHJvZHVjZXMgd2hlbiBhIGRldmljZV90ZXJtaW5hdGVfYWxsKCkgaXMgY2FsbGVkLCAKPiAo QVRfWERNQUNfQ0hBTl9JU19DWUNMSUMgY2xlYXJlZCBvbiBhdGNoYW4tPnN0YXR1cykgYW5kIHRo ZW4gYSBsYXRlIEVuZCAKPiBvZiBCbG9jayBpbnRlcnJ1cHQgYXJyaXZlcyAoQVRfWERNQUNfQ0lT X0JJUyksIHdoaWNoIHNldHMgYml0IDAgb2YgCj4gYXRjaGFuLT5zdGF0dXMuIEJpdCAwIGlzIGFs c28gdXNlZCBmb3IgQVRfWERNQUNfQ0hBTl9JU19DWUNMSUMsIHNvIHdoZW4gCj4gYSBuZXcgZGVz Y3JpcHRvciBmb3IgYSBjeWNsaWMgdHJhbnNmZXIgaXMgY3JlYXRlZCwgdGhlIGRyaXZlciByZXBv cnRzIAo+IHRoZSBjaGFubmVsIGFzIGluIHVzZToKPiAKPiBpZiAodGVzdF9hbmRfc2V0X2JpdChB VF9YRE1BQ19DSEFOX0lTX0NZQ0xJQywgJmF0Y2hhbi0+c3RhdHVzKSkgewo+IAlkZXZfZXJyKGNo YW4yZGV2KGNoYW4pLCAiY2hhbm5lbCBjdXJyZW50bHkgdXNlZFxuIik7Cj4gCXJldHVybiBOVUxM Owo+IH0KPiAKPiBJIGNhbiBzZW5kIHYyIGlmIHlvdSBjb25zaWRlciB0aGUgY29tbWl0IG1lc3Nh Z2UgbWlzbGVhZGluZy4KClllcyBwbGVhc2UsIHRoYXQgd291bGQgYmUgYmV0dGVyIGFuZCBwbHMg YWRkIGZpeGVzIGFzIHN1Z2dlc3RlZCBieQpMdWRvdmljIGFsb25nIHdpdGggaGlzIGFjawo=