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: [5/7] dmaengine: stm32-dma: fix DMA IRQ status handling From: Joel Fernandes Message-Id: <20181009054752.145978-6-joel@joelfernandes.org> Date: Mon, 8 Oct 2018 22:47:50 -0700 To: stable@vger.kernel.org Cc: Pierre Yves MORDRET , Vinod Koul , gregkh@linuxfoundation.org, Alexandre Torgue , Dan Williams , dmaengine@vger.kernel.org, "Joel Fernandes (Google)" , "moderated list:ARM/STM32 ARCHITECTURE" , linux-kernel@vger.kernel.org, Maxime Coquelin List-ID: RnJvbTogUGllcnJlIFl2ZXMgTU9SRFJFVCA8cGllcnJlLXl2ZXMubW9yZHJldEBzdC5jb20+CgpV cGRhdGUgdGhlIHdheSBUcmFuc2ZlciBDb21wbGV0ZSBhbmQgSGFsZiBUcmFuc2ZlciBDb21wbGV0 ZSBzdGF0dXMgYXJlCmFja25vd2xlZGdlLiBFdmVuIGlmIEhUSSBpcyBub3QgZW5hYmxlZCBpdHMg c3RhdHVzIGlzIHNob3duIHdoZW4gcmVhZGluZwpyZWdpc3RlcnMsIGRyaXZlciBoYXMgdG8gY2xl YXIgaXQgZ2VudGx5IGFuZCBub3QgcmFpc2UgYW4gZXJyb3IuCgpTaWduZWQtb2ZmLWJ5OiBQaWVy cmUtWXZlcyBNT1JEUkVUIDxwaWVycmUteXZlcy5tb3JkcmV0QHN0LmNvbT4KU2lnbmVkLW9mZi1i eTogVmlub2QgS291bCA8dmlub2Qua291bEBpbnRlbC5jb20+Ci0tLQogZHJpdmVycy9kbWEvc3Rt MzItZG1hLmMgfCAyOSArKysrKysrKysrKysrKysrKysrKysrKysrLS0tLQogMSBmaWxlIGNoYW5n ZWQsIDI1IGluc2VydGlvbnMoKyksIDQgZGVsZXRpb25zKC0pCgpkaWZmIC0tZ2l0IGEvZHJpdmVy cy9kbWEvc3RtMzItZG1hLmMgYi9kcml2ZXJzL2RtYS9zdG0zMi1kbWEuYwppbmRleCAyMWFkMzU5 YTVhNTkuLmI0MDQ4NjQ1NGEyYyAxMDA2NDQKLS0tIGEvZHJpdmVycy9kbWEvc3RtMzItZG1hLmMK KysrIGIvZHJpdmVycy9kbWEvc3RtMzItZG1hLmMKQEAgLTM0LDkgKzM0LDE0IEBACiAjZGVmaW5l IFNUTTMyX0RNQV9MSUZDUgkJCTB4MDAwOCAvKiBETUEgTG93IEludCBGbGFnIENsZWFyIFJlZyAq LwogI2RlZmluZSBTVE0zMl9ETUFfSElGQ1IJCQkweDAwMGMgLyogRE1BIEhpZ2ggSW50IEZsYWcg Q2xlYXIgUmVnICovCiAjZGVmaW5lIFNUTTMyX0RNQV9UQ0kJCQlCSVQoNSkgLyogVHJhbnNmZXIg Q29tcGxldGUgSW50ZXJydXB0ICovCisjZGVmaW5lIFNUTTMyX0RNQV9IVEkJCQlCSVQoNCkgLyog SGFsZiBUcmFuc2ZlciBJbnRlcnJ1cHQgKi8KICNkZWZpbmUgU1RNMzJfRE1BX1RFSQkJCUJJVCgz KSAvKiBUcmFuc2ZlciBFcnJvciBJbnRlcnJ1cHQgKi8KICNkZWZpbmUgU1RNMzJfRE1BX0RNRUkJ CQlCSVQoMikgLyogRGlyZWN0IE1vZGUgRXJyb3IgSW50ZXJydXB0ICovCiAjZGVmaW5lIFNUTTMy X0RNQV9GRUkJCQlCSVQoMCkgLyogRklGTyBFcnJvciBJbnRlcnJ1cHQgKi8KKyNkZWZpbmUgU1RN MzJfRE1BX01BU0tJCQkJKFNUTTMyX0RNQV9UQ0kgXAorCQkJCQkgfCBTVE0zMl9ETUFfVEVJIFwK KwkJCQkJIHwgU1RNMzJfRE1BX0RNRUkgXAorCQkJCQkgfCBTVE0zMl9ETUFfRkVJKQogCiAvKiBE TUEgU3RyZWFtIHggQ29uZmlndXJhdGlvbiBSZWdpc3RlciAqLwogI2RlZmluZSBTVE0zMl9ETUFf U0NSKHgpCQkoMHgwMDEwICsgMHgxOCAqICh4KSkgLyogeCA9IDAuLjcgKi8KQEAgLTY0MywxMyAr NjQ4LDI5IEBAIHN0YXRpYyBpcnFyZXR1cm5fdCBzdG0zMl9kbWFfY2hhbl9pcnEoaW50IGlycSwg dm9pZCAqZGV2aWQpCiAJc3RhdHVzID0gc3RtMzJfZG1hX2lycV9zdGF0dXMoY2hhbik7CiAJc2Ny ID0gc3RtMzJfZG1hX3JlYWQoZG1hZGV2LCBTVE0zMl9ETUFfU0NSKGNoYW4tPmlkKSk7CiAKLQlp ZiAoKHN0YXR1cyAmIFNUTTMyX0RNQV9UQ0kpICYmIChzY3IgJiBTVE0zMl9ETUFfU0NSX1RDSUUp KSB7CisJaWYgKHN0YXR1cyAmIFNUTTMyX0RNQV9UQ0kpIHsKIAkJc3RtMzJfZG1hX2lycV9jbGVh cihjaGFuLCBTVE0zMl9ETUFfVENJKTsKLQkJc3RtMzJfZG1hX2hhbmRsZV9jaGFuX2RvbmUoY2hh bik7Ci0KLQl9IGVsc2UgeworCQlpZiAoc2NyICYgU1RNMzJfRE1BX1NDUl9UQ0lFKQorCQkJc3Rt MzJfZG1hX2hhbmRsZV9jaGFuX2RvbmUoY2hhbik7CisJCXN0YXR1cyAmPSB+U1RNMzJfRE1BX1RD STsKKwl9CisJaWYgKHN0YXR1cyAmIFNUTTMyX0RNQV9IVEkpIHsKKwkJc3RtMzJfZG1hX2lycV9j bGVhcihjaGFuLCBTVE0zMl9ETUFfSFRJKTsKKwkJc3RhdHVzICY9IH5TVE0zMl9ETUFfSFRJOwor CX0KKwlpZiAoc3RhdHVzICYgU1RNMzJfRE1BX0ZFSSkgeworCQlzdG0zMl9kbWFfaXJxX2NsZWFy KGNoYW4sIFNUTTMyX0RNQV9GRUkpOworCQlzdGF0dXMgJj0gflNUTTMyX0RNQV9GRUk7CisJCWlm ICghKHNjciAmIFNUTTMyX0RNQV9TQ1JfRU4pKQorCQkJZGV2X2VycihjaGFuMmRldihjaGFuKSwg IkZJRk8gRXJyb3JcbiIpOworCQllbHNlCisJCQlkZXZfZGJnKGNoYW4yZGV2KGNoYW4pLCAiRklG TyBvdmVyL3VuZGVycnVuXG4iKTsKKwl9CisJaWYgKHN0YXR1cykgewogCQlzdG0zMl9kbWFfaXJx X2NsZWFyKGNoYW4sIHN0YXR1cyk7CiAJCWRldl9lcnIoY2hhbjJkZXYoY2hhbiksICJETUEgZXJy b3I6IHN0YXR1cz0weCUwOHhcbiIsIHN0YXR1cyk7CisJCWlmICghKHNjciAmIFNUTTMyX0RNQV9T Q1JfRU4pKQorCQkJZGV2X2VycihjaGFuMmRldihjaGFuKSwgImNoYW4gZGlzYWJsZWQgYnkgSFdc biIpOwogCX0KIAogCXNwaW5fdW5sb2NrKCZjaGFuLT52Y2hhbi5sb2NrKTsK