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: [RFC,4/6] dmaengine: xilinx_dma: Freeup active list based on descriptor completion bit From: Radhey Shyam Pandey Message-Id: <1522665546-10035-5-git-send-email-radheys@xilinx.com> Date: Mon, 2 Apr 2018 16:09:04 +0530 To: vinod.koul@intel.com, dan.j.williams@intel.com, michal.simek@xilinx.com, appana.durga.rao@xilinx.com, radheys@xilinx.com, lars@metafoo.de Cc: dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org List-ID: QVhJRE1BIElQIHNldHMgY29tcGxldGlvbiBiaXQgdG8gMSB3aGVuIHRoZSB0cmFuc2ZlciBpcyBj b21wbGV0ZWQuIFJlYWQKdGhpcyBiaXQgdG8gbW92ZSBkZXNjcmlwdG9yIGZyb20gYWN0aXZlIGxp c3QgdG8gdGhlIGRvbmUgbGlzdC4gVGhpcyBmZWF0dXJlCmlzIG5lZWRlZCB3aGVuIGludGVycnVw dCBkZWxheSB0aW1lb3V0IGFuZCBJUlFUaHJlc2hvbGQgaXMgZW5hYmxlZCBpLmUKRGx5X0lycUVu IGlzIHRyaWdnZXJlZCB3L28gY29tcGxldGluZyBJbnRlcnJ1cHQgVGhyZXNob2xkLgoKU2lnbmVk LW9mZi1ieTogUmFkaGV5IFNoeWFtIFBhbmRleSA8cmFkaGV5c0B4aWxpbnguY29tPgotLS0KIGRy aXZlcnMvZG1hL3hpbGlueC94aWxpbnhfZG1hLmMgfCAgIDE4ICsrKysrKysrKysrKysrLS0tLQog MSBmaWxlcyBjaGFuZ2VkLCAxNCBpbnNlcnRpb25zKCspLCA0IGRlbGV0aW9ucygtKQoKZGlmZiAt LWdpdCBhL2RyaXZlcnMvZG1hL3hpbGlueC94aWxpbnhfZG1hLmMgYi9kcml2ZXJzL2RtYS94aWxp bngveGlsaW54X2RtYS5jCmluZGV4IDM2ZTFhYjkuLjUxODQ2NWUgMTAwNjQ0Ci0tLSBhL2RyaXZl cnMvZG1hL3hpbGlueC94aWxpbnhfZG1hLmMKKysrIGIvZHJpdmVycy9kbWEveGlsaW54L3hpbGlu eF9kbWEuYwpAQCAtMTAzLDYgKzEwMyw3IEBACiAjZGVmaW5lIFhJTElOWF9ETUFfUEFSS19QVFJf UkRfUkVGX1NISUZUCTAKICNkZWZpbmUgWElMSU5YX0RNQV9QQVJLX1BUUl9SRF9SRUZfTUFTSwkJ R0VOTUFTSyg0LCAwKQogI2RlZmluZSBYSUxJTlhfRE1BX1JFR19WRE1BX1ZFUlNJT04JCTB4MDAy YworI2RlZmluZSBYSUxJTlhfRE1BX0NPTVBfTUFTSwkJCUJJVCgzMSkKIAogLyogUmVnaXN0ZXIg RGlyZWN0IE1vZGUgUmVnaXN0ZXJzICovCiAjZGVmaW5lIFhJTElOWF9ETUFfUkVHX1ZTSVpFCQkJ MHgwMDAwCkBAIC0xMzg3LDE2ICsxMzg4LDI1IEBAIHN0YXRpYyB2b2lkIHhpbGlueF9kbWFfaXNz dWVfcGVuZGluZyhzdHJ1Y3QgZG1hX2NoYW4gKmRjaGFuKQogc3RhdGljIHZvaWQgeGlsaW54X2Rt YV9jb21wbGV0ZV9kZXNjcmlwdG9yKHN0cnVjdCB4aWxpbnhfZG1hX2NoYW4gKmNoYW4pCiB7CiAJ c3RydWN0IHhpbGlueF9kbWFfdHhfZGVzY3JpcHRvciAqZGVzYywgKm5leHQ7CisJc3RydWN0IHhp bGlueF9heGlkbWFfdHhfc2VnbWVudCAqc2VnOwogCiAJLyogVGhpcyBmdW5jdGlvbiB3YXMgaW52 b2tlZCB3aXRoIGxvY2sgaGVsZCAqLwogCWlmIChsaXN0X2VtcHR5KCZjaGFuLT5hY3RpdmVfbGlz dCkpCiAJCXJldHVybjsKIAogCWxpc3RfZm9yX2VhY2hfZW50cnlfc2FmZShkZXNjLCBuZXh0LCAm Y2hhbi0+YWN0aXZlX2xpc3QsIG5vZGUpIHsKLQkJbGlzdF9kZWwoJmRlc2MtPm5vZGUpOwotCQlp ZiAoIWRlc2MtPmN5Y2xpYykKLQkJCWRtYV9jb29raWVfY29tcGxldGUoJmRlc2MtPmFzeW5jX3R4 KTsKLQkJbGlzdF9hZGRfdGFpbCgmZGVzYy0+bm9kZSwgJmNoYW4tPmRvbmVfbGlzdCk7CisKKwkJ c2VnID0gbGlzdF9sYXN0X2VudHJ5KCZkZXNjLT5zZWdtZW50cywKKwkJCQkgICAgICBzdHJ1Y3Qg eGlsaW54X2F4aWRtYV90eF9zZWdtZW50LCBub2RlKTsKKwkJaWYgKChzZWctPmh3LnN0YXR1cyAm IFhJTElOWF9ETUFfQ09NUF9NQVNLKSB8fAorCQkJKCFjaGFuLT54ZGV2LT5oYXNfYXhpZXRoX2Nv bm5lY3RlZCkpIHsKKwkJCWxpc3RfZGVsKCZkZXNjLT5ub2RlKTsKKwkJCWlmICghZGVzYy0+Y3lj bGljKQorCQkJCWRtYV9jb29raWVfY29tcGxldGUoJmRlc2MtPmFzeW5jX3R4KTsKKwkJCWxpc3Rf YWRkX3RhaWwoJmRlc2MtPm5vZGUsICZjaGFuLT5kb25lX2xpc3QpOworCQl9IGVsc2UgeworCQkJ YnJlYWs7CisJCX0KIAl9CiB9CiAK