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: imx-sdma: fix pagefault when channel is disabled during interrupt From: Thierry Bultel Message-Id: <1518511643-27405-1-git-send-email-tbultel@pixelsurmer.com> Date: Tue, 13 Feb 2018 09:47:23 +0100 To: dmaengine@vger.kernel.org Cc: Thierry Bultel List-ID: QWRkIGEgc3BpbmxvY2sgYW5kIGEgJ2VuYWJsZWQnIGJvb2xlYW4gb24gY2hhbm5lbCBkZXNjcmlw dG9yLCB0byBhdm9pZAp1c2luZyBidWZmZXIgZGVzY3JpcHRvcnMgaW4gdGhlIGludGVycnVwdCBj b250ZXh0LApzZG1hX2Rpc2FibGVfY2hhbm5lbCBpcyBjYWxsZWQgbWVhbndoaWxlLgotLS0KIGRy aXZlcnMvZG1hL2lteC1zZG1hLmMgfCAyMSArKysrKysrKysrKysrKysrKysrKysKIDEgZmlsZSBj aGFuZ2VkLCAyMSBpbnNlcnRpb25zKCspCgpkaWZmIC0tZ2l0IGEvZHJpdmVycy9kbWEvaW14LXNk bWEuYyBiL2RyaXZlcnMvZG1hL2lteC1zZG1hLmMKaW5kZXggZDE2NTFhNS4uN2VhYjQyYiAxMDA2 NDQKLS0tIGEvZHJpdmVycy9kbWEvaW14LXNkbWEuYworKysgYi9kcml2ZXJzL2RtYS9pbXgtc2Rt YS5jCkBAIC0zMzAsNiArMzMwLDcgQEAgc3RydWN0IHNkbWFfY2hhbm5lbCB7CiAJdW5zaWduZWQg aW50CQkJY2huX3JlYWxfY291bnQ7CiAJc3RydWN0IHRhc2tsZXRfc3RydWN0CQl0YXNrbGV0Owog CXN0cnVjdCBpbXhfZG1hX2RhdGEJCWRhdGE7CisJdW5zaWduZWQgaW50IAkJCWVuYWJsZWQ7CiB9 OwogCiAjZGVmaW5lIElNWF9ETUFfU0dfTE9PUAkJQklUKDApCkBAIC01ODgsNyArNTg5LDEzIEBA IHN0YXRpYyBpbnQgc2RtYV9jb25maWdfb3duZXJzaGlwKHN0cnVjdCBzZG1hX2NoYW5uZWwgKnNk bWFjLAogCiBzdGF0aWMgdm9pZCBzZG1hX2VuYWJsZV9jaGFubmVsKHN0cnVjdCBzZG1hX2VuZ2lu ZSAqc2RtYSwgaW50IGNoYW5uZWwpCiB7CisJdW5zaWduZWQgbG9uZyBmbGFnczsKKwlzdHJ1Y3Qg c2RtYV9jaGFubmVsICpzZG1hYyA9ICZzZG1hLT5jaGFubmVsW2NoYW5uZWxdOwogCXdyaXRlbChC SVQoY2hhbm5lbCksIHNkbWEtPnJlZ3MgKyBTRE1BX0hfU1RBUlQpOworCisJc3Bpbl9sb2NrX2ly cXNhdmUoJnNkbWFjLT5sb2NrLCBmbGFncyk7CisJc2RtYWMtPmVuYWJsZWQgPSAxOworCXNwaW5f dW5sb2NrX2lycXJlc3RvcmUoJnNkbWFjLT5sb2NrLCBmbGFncyk7CiB9CiAKIC8qCkBAIC02Nzcs NiArNjg0LDE1IEBAIHN0YXRpYyB2b2lkIHNkbWFfdXBkYXRlX2NoYW5uZWxfbG9vcChzdHJ1Y3Qg c2RtYV9jaGFubmVsICpzZG1hYykKIAlzdHJ1Y3Qgc2RtYV9idWZmZXJfZGVzY3JpcHRvciAqYmQ7 CiAJaW50IGVycm9yID0gMDsKIAllbnVtIGRtYV9zdGF0dXMJb2xkX3N0YXR1cyA9IHNkbWFjLT5z dGF0dXM7CisJdW5zaWduZWQgbG9uZyBmbGFnczsKKworCWludCBlbmFibGVkOworCXNwaW5fbG9j a19pcnFzYXZlKCZzZG1hYy0+bG9jaywgZmxhZ3MpOworCWVuYWJsZWQgPSBzZG1hYy0+ZW5hYmxl ZDsKKwlzcGluX3VubG9ja19pcnFyZXN0b3JlKCZzZG1hYy0+bG9jaywgZmxhZ3MpOworCisJaWYg KCFlbmFibGVkKQorCQlyZXR1cm47CiAKIAkvKgogCSAqIGxvb3AgbW9kZS4gSXRlcmF0ZSBvdmVy IGRlc2NyaXB0b3JzLCByZS1zZXR1cCB0aGVtIGFuZApAQCAtOTMwLDEwICs5NDYsMTUgQEAgc3Rh dGljIGludCBzZG1hX2Rpc2FibGVfY2hhbm5lbChzdHJ1Y3QgZG1hX2NoYW4gKmNoYW4pCiAJc3Ry dWN0IHNkbWFfY2hhbm5lbCAqc2RtYWMgPSB0b19zZG1hX2NoYW4oY2hhbik7CiAJc3RydWN0IHNk bWFfZW5naW5lICpzZG1hID0gc2RtYWMtPnNkbWE7CiAJaW50IGNoYW5uZWwgPSBzZG1hYy0+Y2hh bm5lbDsKKwl1bnNpZ25lZCBsb25nIGZsYWdzOwogCiAJd3JpdGVsX3JlbGF4ZWQoQklUKGNoYW5u ZWwpLCBzZG1hLT5yZWdzICsgU0RNQV9IX1NUQVRTVE9QKTsKIAlzZG1hYy0+c3RhdHVzID0gRE1B X0VSUk9SOwogCisJc3Bpbl9sb2NrX2lycXNhdmUoJnNkbWFjLT5sb2NrLCBmbGFncyk7CisJc2Rt YWMtPmVuYWJsZWQgPSAwOworCXNwaW5fdW5sb2NrX2lycXJlc3RvcmUoJnNkbWFjLT5sb2NrLCBm bGFncyk7CisKIAlyZXR1cm4gMDsKIH0KIAo=