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: [-next] dmaengine: sprd: Fix potential NULL dereference in sprd_dma_probe() From: Lars-Peter Clausen Message-Id: <6a99ed9b-ef0c-98c8-b750-2be730774aa4@metafoo.de> Date: Tue, 8 May 2018 13:46:23 +0200 To: Wei Yongjun , Dan Williams , Vinod Koul , Orson Zhai , Baolin Wang , Chunyan Zhang Cc: dmaengine@vger.kernel.org, kernel-janitors@vger.kernel.org List-ID: T24gMDUvMDcvMjAxOCAwMzo0MCBBTSwgV2VpIFlvbmdqdW4gd3JvdGU6Cj4gcGxhdGZvcm1fZ2V0 X3Jlc291cmNlKCkgbWF5IGZhaWwgYW5kIHJldHVybiBOVUxMLCBzbyB3ZSBzaG91bGQKPiBiZXR0 ZXIgY2hlY2sgaXQncyByZXR1cm4gdmFsdWUgdG8gYXZvaWQgYSBOVUxMIHBvaW50ZXIgZGVyZWZl cmVuY2UKPiBhIGJpdCBsYXRlciBpbiB0aGUgY29kZS4KPiAKPiBUaGlzIGlzIGRldGVjdGVkIGJ5 IENvY2NpbmVsbGUgc2VtYW50aWMgcGF0Y2guCj4gCj4gQEAKPiBleHByZXNzaW9uIHBkZXYsIHJl cywgbiwgdCwgZSwgZTEsIGUyOwo+IEBACj4gCj4gcmVzID0gcGxhdGZvcm1fZ2V0X3Jlc291cmNl KHBkZXYsIHQsIG4pOwo+ICsgaWYgKCFyZXMpCj4gKyAgIHJldHVybiAtRUlOVkFMOwo+IC4uLiB3 aGVuICE9IHJlcyA9PSBOVUxMCj4gZSA9IGRldm1faW9yZW1hcF9ub2NhY2hlKGUxLCByZXMtPnN0 YXJ0LCBlMik7Cj4gCj4gRml4ZXM6IDliM2I4MTcxZjdmNCAoImRtYWVuZ2luZTogc3ByZDogQWRk IFNwcmVhZHRydW0gRE1BIGRyaXZlciIpCj4gU2lnbmVkLW9mZi1ieTogV2VpIFlvbmdqdW4gPHdl aXlvbmdqdW4xQGh1YXdlaS5jb20+Cj4gLS0tCj4gIGRyaXZlcnMvZG1hL3NwcmQtZG1hLmMgfCAy ICsrCj4gIDEgZmlsZSBjaGFuZ2VkLCAyIGluc2VydGlvbnMoKykKPiAKPiBkaWZmIC0tZ2l0IGEv ZHJpdmVycy9kbWEvc3ByZC1kbWEuYyBiL2RyaXZlcnMvZG1hL3NwcmQtZG1hLmMKPiBpbmRleCBj Y2RlYjhmLi5kYmE3YTE3IDEwMDY0NAo+IC0tLSBhL2RyaXZlcnMvZG1hL3NwcmQtZG1hLmMKPiAr KysgYi9kcml2ZXJzL2RtYS9zcHJkLWRtYS5jCj4gQEAgLTgwNyw2ICs4MDcsOCBAQCBzdGF0aWMg aW50IHNwcmRfZG1hX3Byb2JlKHN0cnVjdCBwbGF0Zm9ybV9kZXZpY2UgKnBkZXYpCj4gIAl9Cj4g IAo+ICAJcmVzID0gcGxhdGZvcm1fZ2V0X3Jlc291cmNlKHBkZXYsIElPUkVTT1VSQ0VfTUVNLCAw KTsKPiArCWlmICghcmVzKQo+ICsJCXJldHVybiAtRUlOVkFMOwo+ICAJc2Rldi0+Z2xiX2Jhc2Ug PSBkZXZtX2lvcmVtYXBfbm9jYWNoZSgmcGRldi0+ZGV2LCByZXMtPnN0YXJ0LAo+ICAJCQkJCSAg ICAgIHJlc291cmNlX3NpemUocmVzKSk7CgpJIHRoaW5rIGEgYmV0dGVyIGltcHJvdmVtZW50IHdv dWxkIGJlIHRvIHJlcGxhY2UgdGhpcyB3aXRoCmRldm1faW9yZW1hcF9yZXNvdXJjZSgpIHdoaWNo IGhhcyB0aGUgTlVMTCBwb2ludGVyIGNoZWNrIGFuZCBzb21lIG90aGVyCnRoaW5ncyBidWlsdC1p bi4KLS0tClRvIHVuc3Vic2NyaWJlIGZyb20gdGhpcyBsaXN0OiBzZW5kIHRoZSBsaW5lICJ1bnN1 YnNjcmliZSBkbWFlbmdpbmUiIGluCnRoZSBib2R5IG9mIGEgbWVzc2FnZSB0byBtYWpvcmRvbW9A dmdlci5rZXJuZWwub3JnCk1vcmUgbWFqb3Jkb21vIGluZm8gYXQgIGh0dHA6Ly92Z2VyLmtlcm5l bC5vcmcvbWFqb3Jkb21vLWluZm8uaHRtbAo=