From mboxrd@z Thu Jan 1 00:00:00 1970 From: Qiang Zhao Subject: [PATCH] i2c: layerscape: use PIO when fail to request dma channel Date: Fri, 24 May 2019 03:03:36 +0000 Message-ID: <20190524030514.14082-1-qiang.zhao@nxp.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org To: "shawnguo@kernel.org" Cc: "linux-i2c@vger.kernel.org" , "linux-kernel@vger.kernel.org" , Qiang Zhao List-Id: linux-i2c@vger.kernel.org V2hlbiBmYWlsIHRvIHJlcXVlc3QgRE1BIFRYL1JYIGNoYW5uZWwsIHVzZSBQSU8gaW5zdGVhZCBm b3IgbGF5ZXJzY2FwZS4NCg0KU2lnbmVkLW9mZi1ieTogWmhhbyBRaWFuZyA8cWlhbmcuemhhb0Bu eHAuY29tPg0KLS0tDQogZHJpdmVycy9pMmMvYnVzc2VzL2kyYy1pbXguYyB8IDExICsrKysrKysr KysrDQogMSBmaWxlIGNoYW5nZWQsIDExIGluc2VydGlvbnMoKykNCg0KZGlmZiAtLWdpdCBhL2Ry aXZlcnMvaTJjL2J1c3Nlcy9pMmMtaW14LmMgYi9kcml2ZXJzL2kyYy9idXNzZXMvaTJjLWlteC5j DQppbmRleCA5OGIyNzg2MTNjZjIuLjM5YTVhYjRjZjMzMiAxMDA2NDQNCi0tLSBhL2RyaXZlcnMv aTJjL2J1c3Nlcy9pMmMtaW14LmMNCisrKyBiL2RyaXZlcnMvaTJjL2J1c3Nlcy9pMmMtaW14LmMN CkBAIC0zNDcsOSArMzQ3LDEzIEBAIHN0YXRpYyBpbnQgaTJjX2lteF9kbWFfcmVxdWVzdChzdHJ1 Y3QgaW14X2kyY19zdHJ1Y3QgKmkyY19pbXgsDQogDQogCWRtYS0+Y2hhbl90eCA9IGRtYV9yZXF1 ZXN0X2NoYW4oZGV2LCAidHgiKTsNCiAJaWYgKElTX0VSUihkbWEtPmNoYW5fdHgpKSB7DQorI2lm ZGVmIENPTkZJR19BUkNIX0xBWUVSU0NBUEUNCisJCWRldl9kYmcoZGV2LCAiY2FuJ3QgcmVxdWVz dCBETUEgdHggY2hhbm5lbFxuIik7DQorI2Vsc2UNCiAJCXJldCA9IFBUUl9FUlIoZG1hLT5jaGFu X3R4KTsNCiAJCWlmIChyZXQgIT0gLUVOT0RFViAmJiByZXQgIT0gLUVQUk9CRV9ERUZFUikNCiAJ CQlkZXZfZXJyKGRldiwgImNhbid0IHJlcXVlc3QgRE1BIHR4IGNoYW5uZWwgKCVkKVxuIiwgcmV0 KTsNCisjZW5kaWYNCiAJCWdvdG8gZmFpbF9hbDsNCiAJfQ0KIA0KQEAgLTM2Niw5ICszNzAsMTMg QEAgc3RhdGljIGludCBpMmNfaW14X2RtYV9yZXF1ZXN0KHN0cnVjdCBpbXhfaTJjX3N0cnVjdCAq aTJjX2lteCwNCiANCiAJZG1hLT5jaGFuX3J4ID0gZG1hX3JlcXVlc3RfY2hhbihkZXYsICJyeCIp Ow0KIAlpZiAoSVNfRVJSKGRtYS0+Y2hhbl9yeCkpIHsNCisjaWZkZWYgQ09ORklHX0FSQ0hfTEFZ RVJTQ0FQRQ0KKwkJZGV2X2RiZyhkZXYsICJjYW4ndCByZXF1ZXN0IERNQSByeCBjaGFubmVsXG4i KTsNCisjZWxzZQ0KIAkJcmV0ID0gUFRSX0VSUihkbWEtPmNoYW5fcngpOw0KIAkJaWYgKHJldCAh PSAtRU5PREVWICYmIHJldCAhPSAtRVBST0JFX0RFRkVSKQ0KIAkJCWRldl9lcnIoZGV2LCAiY2Fu J3QgcmVxdWVzdCBETUEgcnggY2hhbm5lbCAoJWQpXG4iLCByZXQpOw0KKyNlbmRpZg0KIAkJZ290 byBmYWlsX3R4Ow0KIAl9DQogDQpAQCAtMzk2LDYgKzQwNCw5IEBAIHN0YXRpYyBpbnQgaTJjX2lt eF9kbWFfcmVxdWVzdChzdHJ1Y3QgaW14X2kyY19zdHJ1Y3QgKmkyY19pbXgsDQogCWRtYV9yZWxl YXNlX2NoYW5uZWwoZG1hLT5jaGFuX3R4KTsNCiBmYWlsX2FsOg0KIAlkZXZtX2tmcmVlKGRldiwg ZG1hKTsNCisjaWZkZWYgQ09ORklHX0FSQ0hfTEFZRVJTQ0FQRQ0KKwlkZXZfaW5mbyhkZXYsICJj YW4ndCB1c2UgRE1BLCB1c2luZyBQSU8gaW5zdGVhZC5cbiIpOw0KKyNlbmRpZg0KIAkvKiByZXR1 cm4gc3VjY2Vzc2Z1bGx5IGlmIHRoZXJlIGlzIG5vIGRtYSBzdXBwb3J0ICovDQogCXJldHVybiBy ZXQgPT0gLUVOT0RFViA/IDAgOiByZXQ7DQogfQ0KLS0gDQoyLjE3LjENCg0K